SCHEDULE 14A
(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT
SCHEDULE 14A INFORMATION

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES
EXCHANGE ACT OF 1934 (AMENDMENT NO. )

Filed by the registrant [X]

Filed by a party other than the registrant [ ]

Check the appropriate box:

[ ] Preliminary proxy statement. [ ] Confidential, for use of the
Commission only (as permitted by
Rule 14a-6(e)(2)).

[X] Definitive proxy statement.

[ ] Definitive additional materials.

[ ] Soliciting material pursuant to Rule 14a-12

A.O. Smith Corporation
- --------------------------------------------------------------------------------
(Name of Registrant as Specified in Its Charter)

- --------------------------------------------------------------------------------
(Name of Person(s) Filing Proxy Statement if Other Than the Registrant)

Payment of filing fee (check the appropriate box):

[X] No fee required.

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and
0-11.

(1) Title of each class of securities to which transaction applies:

- --------------------------------------------------------------------------------

(2) Aggregate number of securities to which transaction applies:

- --------------------------------------------------------------------------------

(3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (set forth the amount on which the
filing fee is calculated and state how it was determined):

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(4) Proposed maximum aggregate value of transaction:

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(5) Total fee paid:

- --------------------------------------------------------------------------------

[ ] Fee paid previously with preliminary materials.
- --------------------------------------------------------------------------------

[ ] Check box if any part of the fee is offset as provided by Exchange Act
Rule 0-11(a)(2) and identify the filing for which the offsetting fee
was paid previously. Identify the previous filing by registration
statement number, or the form or schedule and the date of its filing.

(1) Amount Previously Paid:

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(2) Form, Schedule or Registration Statement No.:

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(3) Filing Party:

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(4) Date Filed:

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[AO SMITH CORPORATION LOGO]

P.O. BOX 245009
MILWAUKEE, WI 53224-9509

NOTICE AND PROXY STATEMENT

NOTICE OF 2001 ANNUAL MEETING OF STOCKHOLDERS

PLEASE TAKE NOTICE that the annual meeting of the stockholders of A. O.
SMITH CORPORATION will be held on Wednesday, April 4, 2001, at 10:30 A.M.,
Eastern Time, at the Hotel du Pont, 11th and Market Streets, Wilmington,
Delaware, for the following purposes:

(1) To elect six directors chosen by the holders of Class A Common Stock.

(2) To elect two directors chosen by the holders of Common Stock.

(3) To ratify the appointment of Ernst & Young LLP as the Company's
independent auditors for 2001.

(4) To transact such other business and act upon such other matters which
may properly come before the meeting or any adjournments thereof.

Only holders of record of the Class A Common Stock and the Common Stock of
the Company at the close of business on February 28, 2001, will be entitled to
notice of and to vote at the meeting. The list of stockholders entitled to vote
at the meeting will be available as of March 23, 2001, for examination by
stockholders for purposes related to the meeting at our offices at 11270 West
Park Place, Milwaukee, Wisconsin.

YOU ARE INVITED TO ATTEND THE MEETING IN PERSON; HOWEVER, EVEN IF YOU PLAN
TO ATTEND THE MEETING IN PERSON, PLEASE TAKE A FEW MINUTES TO COMPLETE, DATE AND
SIGN THE ENCLOSED PROXY AND MAIL IT PROMPTLY IN THE ENCLOSED ENVELOPE. IF YOU
ARE A SHARE HOLDER OF RECORD (YOUR SHARES ARE IN YOUR NAME), THEN YOU ALSO MAY
VOTE YOUR SHARES VIA THE TELEPHONE BY ACCESSING THE TOLL-FREE NUMBER INDICATED
ON YOUR PROXY CARD OR VIA THE INTERNET BY ACCESSING THE WORLDWIDE WEBSITE
INDICATED ON YOUR PROXY CARD. IF YOU ATTEND THE MEETING, THEN YOU MAY REVOKE
YOUR PROXY AND VOTE YOUR SHARES IN PERSON. YOUR ATTENTION IS DIRECTED TO THE
PROXY STATEMENT ENCLOSED WITHIN.

W. David Romoser
Secretary

March 5, 2001
3

[AO SMITH CORPORATION LOGO]
----------------------------------------------

P. O. BOX 245009
MILWAUKEE, WI 53224-9509
----------------------------------------------

PROXY STATEMENT

GENERAL INFORMATION

This proxy statement is furnished to stockholders of A. O. Smith
Corporation (the "Company") in connection with the solicitation by its Board of
Directors of proxies for use at the annual meeting of stockholders of the
Company to be held on April 4, 2001, at 10:30 A.M., Eastern Time, at the Hotel
du Pont, 11th and Market Streets, Wilmington, Delaware.

The record date for stockholders entitled to notice of and to vote at the
meeting is the close of business on February 28, 2001 (the "Record Date"). As of
the Record Date, the Company had issued 8,720,020 shares of Class A Common
Stock, par value $5 per share, 8,687,425 shares of which were outstanding and
entitled to one vote each for Class A Common Stock directors and other matters.
As of the Record Date, the Company had issued 23,829,342 shares of Common Stock,
par value $1 per share, 14,879,714 shares of which were outstanding and entitled
to one vote each for Common Stock directors and one-tenth (1/10) vote each for
other matters.

The Notice of 2001 Annual Meeting of Stockholders, this proxy statement,
form of proxy card and the Company's 2000 Annual Report are being mailed on or
about March 5, 2001, to each stockholder of the Company at the holder's address
of record.

Under the Company's Restated Certificate of Incorporation, as long as the
number of outstanding shares of Common Stock is at least 10% of the aggregate
number of outstanding shares of Class A Common Stock, the holders of the Class A
Common Stock and holders of the Common Stock vote as separate classes in the
election of directors. The holders of the Common Stock are entitled to elect as
a class 25% of the entire Board of Directors of the Company. Stockholders are
entitled to one vote per share in the election of directors for their class of
stock.

A majority of the outstanding shares entitled to vote must be represented
in person or by proxy at the meeting in order to constitute a quorum for
purposes of holding the annual meeting. The voting by stockholders at the
meeting is conducted by the inspectors of election. Abstentions and broker
nonvotes are counted as present in determining whether the quorum requirement is
met.

Directors are elected by a plurality of the votes cast, by proxy or in
person, with the holders voting as separate classes. A plurality of votes means
that the nominees who receive the greatest number of votes cast are elected as
directors. Consequently, any shares that are not voted, whether by abstention,
broker nonvotes or otherwise, will have no effect on the election of directors.

For all other matters considered at the meeting, both classes of stock vote
together as a single class, with the Class A Common Stock entitled to one vote
per share and the Common Stock entitled to 1/10th vote per share. All such other
matters are decided by a majority of the votes cast. On such other matters, an
abstention will have the same effect as a "no" vote but, because shares held by
brokers will not be considered to vote on matters as to which the brokers
withhold authority, a broker nonvote will have no effect on the vote.
4

The enclosed proxy is solicited by and on behalf of the Board of Directors
of the Company. A proxy may be revoked by the person giving it at any time
before the exercise thereof by delivering written notice of revocation or a duly
executed proxy bearing a later date to the Secretary of the Company or by
attending the meeting and voting in person. All valid proxies not revoked will
be voted unless marked to abstain. Where a choice is specified on a proxy, the
shares represented by such proxy will be voted in accordance with the
specification made. If no instruction is indicated, then the shares will be
voted FOR proposals (1) through (3) set forth in the accompanying notice.

The cost of soliciting proxies, including preparing, assembling and mailing
the notice of meeting, proxy statement, form of proxy and other soliciting
materials, as well as the cost of forwarding such material to the beneficial
owners of stock, will be paid by the Company. In addition to solicitation by
mail, directors, officers, regular employees of the Company and others may also,
but without compensation other than their regular compensation, solicit proxies
personally or by telephone or other means of electronic communication. The
Company may reimburse brokers and others holding stock in their names or in the
names of nominees for their reasonable out-of-pocket expenses in sending proxy
material to principals and beneficial owners.

2
5

TABLE OF CONTENTS

PRINCIPAL STOCKHOLDERS...................................... 4
ELECTION OF DIRECTORS....................................... 5
BOARD COMMITTEES............................................ 7
DIRECTOR COMPENSATION....................................... 7
SECURITY OWNERSHIP OF DIRECTORS AND MANAGEMENT.............. 8
EXECUTIVE COMPENSATION...................................... 9
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER
PARTICIPATION............................................. 12
BOARD PERSONNEL AND COMPENSATION COMMITTEE REPORT ON
EXECUTIVE COMPENSATION.................................... 12
PERFORMANCE GRAPH........................................... 15
COMPLIANCE WITH SECTION 16(a) OF THE SECURITIES EXCHANGE
ACT....................................................... 16
REPORT OF THE AUDIT COMMITTEE............................... 16
APPOINTMENT OF INDEPENDENT AUDITORS......................... 16
DATE FOR STOCKHOLDER PROPOSALS.............................. 17
EXHIBIT A................................................... 18

3
6

PRINCIPAL STOCKHOLDERS

The following table shows persons who may be deemed to be beneficial owners
(within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934) of
more than 5% of any class of the Company's stock. Unless otherwise noted, the
table reflects beneficial ownership as of December 31, 2000.

NAME AND ADDRESS AMOUNT AND NATURE OF PERCENT
TITLE OF CLASS OF BENEFICIAL OWNER BENEFICIAL OWNERSHIP OF CLASS
- -------------- ------------------- -------------------- --------

Class A Smith Investment Company* 8,067,252 92.83%
Common Stock P.O. Box 245011
Milwaukee, WI 53224-9511(1)
Common Stock Smith Investment Company 1,559,076(2) 10.49%(2)
P.O. Box 245011
Milwaukee, WI 53224-9511(1)
Common Stock Dimensional Fund Advisors Inc. 1,156,450(3) 7.78%
1299 Ocean Avenue, 11th Floor
Santa Monica, CA 90401
Common Stock Perkins, Wolf, McDonnell & Company 1,341,700(4) 9.03%
53 West Jackson Blvd., Suite 722
Chicago, IL 60604
Common Stock T. Rowe Price Associates Inc. 1,895,700(5) 12.76%
100 East Pratt Street
Baltimore, MD 21202

- ---------------
(1) Arthur O. Smith and Lloyd B. Smith are co-filers with Smith Investment
Company on the Schedule 13G that Smith Investment Company has filed with the
Securities and Exchange Commission.

(2) Pursuant to the Company's Restated Certificate of Incorporation, Class A
Common Stock is convertible at any time at the option of the holder into
Common Stock on a share-for-share basis. For purposes of computing
beneficial ownership of SICO's Common Stock, assuming that all Class A
Common Stock held by SICO was converted into Common Stock, SICO's beneficial
ownership of the Common Stock is 9,626,328 shares, which represents 42% of
the class of Common Stock.

(3) Dimensional Fund Advisors Inc. has sole voting power and sole dispositive
power with respect to 1,156,450 shares.

(4) Perkins, Wolf, McDonnell & Company ("Perkins") has sole voting power and
sole dispositive power with respect to 11,700 shares and shared voting power
and shared dispositive power with respect to 1,330,000 shares. Perkins
manages the Berger Small Cap Value Fund which, in a separate 13G filing,
reports ownership of 1,000,000 shares of A. O. Smith Common Stock. These
shares are included in the Perkins 13G filing.

(5) These securities are owned by various individual and institutional
investors, including T. Rowe Small-Cap Fund, Inc. (which owns 1,008,900
shares, representing 6.79% of the shares outstanding). T. Rowe Price
Associates, Inc. (Price Associates) serves as investment adviser with power
to direct investments and/or sole power to vote the securities. For purposes
of the reporting requirements of the Securities Exchange Act of 1934, Price
Associates is deemed to be a beneficial owner of such securities; however,
Price Associates expressly disclaims that it is, in fact, the beneficial
owner of such securities.

* Throughout the balance of the proxy statement, Smith Investment Company is
referred to as "SICO".

4
7

Information on beneficial ownership is based upon Schedules 13D or 13G
filed with the Securities and Exchange Commission and any additional information
that any beneficial owners may have provided to the Company.

ELECTION OF DIRECTORS

Eight directors are to be elected to serve until the next succeeding annual
meeting of stockholders and thereafter until their respective successors shall
be duly elected and qualified. Owners of Class A Common Stock are entitled to
elect six directors and owners of Common Stock are entitled to elect the two
remaining directors.

It is intended that proxies hereby solicited will be voted for the election
of the nominees named below. Proxies will not be voted for a greater number of
persons than the eight nominees named below. All nominees have consented to
being named in the proxy statement and to serve if elected. If any nominee for
election as a director shall become unavailable to serve as a director, then
proxies will be voted for such substitute nominee as the Board of Directors may
nominate.

The following information has been furnished to the Company by the
respective nominees for director. Each nominee has been principally engaged in
the employment indicated for the last 5 years unless otherwise stated.

NOMINEES -- CLASS A COMMON STOCK

W. MICHAEL BARNES -- Senior Vice President of Finance & Planning and Chief
Financial Officer -- Rockwell International Corporation.

Mr. Barnes, 58, was elected a director of the Company in 2000. He is a
member of the Investment Policy Committee and Audit Committee. In July, 1991, he
was named senior vice president of finance & planning and chief financial
officer of Rockwell International Corporation. Mr. Barnes was elected a
corporate vice president in 1989, responsible for business development and
planning. Prior to 1989, he held other engineering, finance and executive
positions at Rockwell International and its affiliated companies. Rockwell
International Corporation is a global electronic controls and communications
company engaged in industrial automation, avionics and communications and
automated call distribution systems. Before joining Rockwell International, Mr.
Barnes served as expert consultant to the Assistant Postmaster General in
Washington, D.C.

GLEN R. BOMBERGER -- Executive Vice President.

Mr. Bomberger, 63, became a director and executive vice president in 1986.
He was chief financial officer from 1986 to 2000. He is a member of the
Investment Policy Committee of the Board. Mr. Bomberger joined the Company in
1960. He is a director of SICO and Firstar Funds, Inc.

ROBERT J. O'TOOLE -- Chairman of the Board, President and Chief Executive
Officer.

Mr. O'Toole, 60, became chairman of the board in 1992. He is a member of
the Investment Policy Committee of the Board. He was elected chief executive
officer in March, 1989. He was elected president, chief operating officer and a
director in 1986. Mr. O'Toole joined the Company in 1963. He is a director of
Briggs & Stratton Corporation and Factory Mutual Insurance Company.

5
8

DR. AGNAR PYTTE -- President Emeritus, Case Western Reserve University.

Dr. Pytte, 68, was elected a director of the Company in 1991. He is a
member of the Audit Committee of the Board. He became the president of Case
Western Reserve University in July, 1987 and retired on June 30, 1999. Prior to
July, 1987, Dr. Pytte was the provost at Dartmouth College where he held other
academic positions since 1958. He is now adjunct professor at Dartmouth College.
Dr. Pytte is also a director of The Goodyear Tire & Rubber Company.

BRUCE M. SMITH -- Chairman of the Board, President and Chief Executive
Officer of Smith Investment Company.

Mr. Smith is 52 years of age and has been a director of the Company since
1995. He is a member of the Investment Policy Committee and the Personnel and
Compensation Committee of the Board. He was elected chairman and chief executive
officer of SICO on January 29, 1999, and was elected president of SICO in 1993.
SICO is a diversified company which, through its wholly-owned subsidiaries, is
involved in multicolor printing and related services and commercial warehousing,
trucking and packaging. Prior to 1993, he was executive vice president of A. O.
Smith Water Products Company, a division of the Company, from 1991 through June,
1993 and managing director of A. O. Smith Electric Motors (Ireland) Ltd., a
subsidiary of the Company, from 1988 to 1991. Mr. Smith originally joined the
Company in 1978. Mr. Smith is a director of SICO.

MARK D. SMITH -- Business Manager, Strattec Security Corporation.

Mr. Smith, 39, is a nominee for election as a director. He has served as a
product business manager for Strattec Security Corporation since 1997. Strattec
Security Corporation designs, develops, manufactures and markets mechanical
locks, electro-mechanical locks and related security products for major
automotive manufacturers. From 1994 to 1997 Mr. Smith was an operations manager
of A. O. Smith Automotive Products Company, a former division of the Company.

NOMINEES -- COMMON STOCK

WILLIAM F. BUEHLER -- Retired Vice Chairman of the Board of Directors,
Xerox Corporation.

Mr. Buehler, 61, was elected a director of the Company in 1998. He is a
member of the Personnel and Compensation Committee of the Board. Mr. Buehler was
named vice chairman of the board of directors and president -- Industry
Solutions Operations of Xerox Corporation from April of 1999 through 2000. He
joined Xerox Corporation in 1991 as executive vice president and chief staff
officer. Xerox Corporation is a leader in the global document market, providing
document solutions that enhance business productivity. Prior to joining Xerox,
he spent 27 years with AT&T Corporation. Mr. Buehler is a director of Quest
Diagnostics.

KATHLEEN J. HEMPEL -- Former Vice Chairman and Chief Financial Officer,
Fort Howard Corporation.

Ms. Hempel, 50, was elected a director of the Company in 1998. She is the
chairperson of the Audit Committee of the Board. Ms. Hempel was vice chairman
and chief financial officer of Fort Howard Corporation from 1992 until its
merger into Fort James Corporation in 1997. Ms. Hempel joined Fort Howard
Corporation in 1973. Fort Howard Corporation manufactured paper and paper
products. She is also a director of Oshkosh Truck Corporation, Whirlpool
Corporation and Kennametal Corporation.

6
9

BOARD COMMITTEES

The Board of Directors of the Company serves as a committee of the whole
for designating nominees for election as director. The Board of Directors will
consider written recommendations directed to the Chairman from stockholders
concerning nominees for Director. The Board of Directors has 3 standing
committees: the Personnel and Compensation Committee, the Investment Policy
Committee and the Audit Committee. In 2000, the Personnel and Compensation
Committee held 3 meetings, the Investment Policy Committee held 4 meetings and
the Audit Committee met 3 times. The Personnel and Compensation Committee is
responsible for establishing and administering the Company's compensation and
benefit plans for officers, executives and management employees, including the
determination of eligibility for participation in such plans. It determines the
compensation to be paid to officers and certain other selected executives. The
Investment Policy Committee is responsible for investment policy and certain
other matters for all Company retirement funds and other employee benefit funds.
The Audit Committee recommends the firm that will act as independent auditors
for the Company and has the responsibility to review audit procedures and the
internal controls of the Company. The Audit Committee operates under a charter
which was approved by the Board of Directors and is included as Exhibit A. The
Board of Directors has determined that the members of the Audit Committee are
independent as defined by the applicable regulatory bodies.

DIRECTOR COMPENSATION

With respect to fiscal 2000, directors received an annual retainer, paid
quarterly, in the amount of $20,000 and the award of shares of Common Stock with
a market value of $10,000 on the date of its award. Directors also received
$1,200 for attendance at each board meeting, plus expenses and received $500 for
each telephonic (special) board meeting. Each Audit and Personnel and
Compensation Committee member received $3,000, and the chairperson of each
received $4,000 annually; committee members also received $1,000 per meeting,
plus expenses. Each Investment Policy Committee member received $3,000, and the
chairperson received $4,000 annually; committee members also received $2,000 per
meeting, plus expenses. Directors who are employees of the Company are not
compensated for service as directors or committee members or for attendance at
board or committee meetings. During 2000, a total of 5 regular meetings and 1
special meeting of the Board of Directors were held; all directors attended at
least 75% of the number of board meetings and committee meetings, in the
aggregate, on which the director served as a member.

Certain directors have elected to defer payment of their fees and receipt
of Common Stock shares under the Corporate Directors' Deferred Compensation Plan
(the "Directors' Plan"). The Directors' Plan allows directors to defer all or a
portion (not less than 50%) of their fees until any date, but not later than the
year in which age 71 is attained. Payments can be made in a lump sum or in not
more than 10 annual installments.

7
10

SECURITY OWNERSHIP OF DIRECTORS AND MANAGEMENT

The following table shows, as of December 31, 2000, the Class A Common
Stock and Common Stock of the Company and the Class A Common Stock and Common
Stock options exercisable on or before March 1, 2001, beneficially owned by each
director, each nominee for director, each named executive officer in the Summary
Compensation Table and by all directors and executive officers as a group.

AMOUNT AND NATURE OF PERCENT
NAME TYPE OF STOCK** BENEFICIAL OWNERSHIP(1) OF CLASS
---- --------------- ----------------------- --------

W. Michael Barnes Common Stock 366 shares *
Tom H. Barrett Common Stock 6,234 shares *
John A. Bertrand Common Stock 131,850 shares(2) *
Glen R. Bomberger Common Stock 327,510 shares(2) 2.20%
William F. Buehler Common Stock 3,232 shares *
Kathleen J. Hempel Common Stock 2,896 shares *
Ronald E. Massa Common Stock 91,181 shares(2) *
Robert J. O'Toole Common Stock 1,102,120 shares(2) 7.42%
Dr. Agnar Pytte Common Stock 6,664 shares *
W. David Romoser Common Stock 119,266 shares(2) *
Arthur O. Smith(3) Common Stock 4,734 shares *
Bruce M. Smith(3) Common Stock 1,744 shares *
Mark D. Smith(3) Common Stock 0 shares *
All 21 Directors, Nominees and Executive
Officers as a Group Common Stock 2,161,427 shares(2) 14.55%

- ---------------
* Represents less than one percent.

** None of the directors, nominees and executive officers have beneficial
ownership of Class A Common Stock (see footnote 3 below).

(1) Except as otherwise noted, all securities are held with sole voting and sole
dispositive power.

(2) Includes 773,550; 252,750; 115,050; 84,575; 86,100 and 1,638,550 shares of
Common Stock subject to options exercisable on or before March 1, 2001,
respectively for Messrs. O'Toole, Bomberger, Bertrand, Massa, and Romoser
and for all directors and executive officers as a group. Please refer to the
Option Grants and Option Exercise Tables for additional stock option
information.

(3) Excludes shares beneficially owned by SICO.

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11

EXECUTIVE COMPENSATION

The SUMMARY COMPENSATION TABLE reflects all compensation awarded to, earned
by or paid to each of the Company's five most highly compensated executive
officers, including the chief executive officer, during fiscal year 2000, as
well as all compensation awarded, earned or paid in the two previous fiscal
years.

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SUMMARY COMPENSATION TABLE
- --------------------------------------------------------------------------------

LONG TERM
ANNUAL COMPENSATION COMPENSATION
- ------------------------------------------------------------------------------------------ ------------
AWARDS
------------
OTHER ANNUAL OPTIONS ALL OTHER
NAME AND COMPENSATION GRANTED COMPENSATION
PRINCIPAL POSITION YEAR SALARY($)(1) BONUS($) ($)(2) (#)(3) ($)(4)
- ------------------ ---- ------------ -------- ------------ ------------ ------------

Robert J. O'Toole 2000 733,000 600,000 89,395 196,900 62,046
Chairman, President and 1999 693,000 955,000 84,038 59,500 230,726
Chief Executive Officer 1998 660,000 881,000 40,581 91,700 93,908
Glen R. Bomberger 2000 393,000 225,000 51,429 60,600 14,430
Executive Vice President 1999 375,000 360,000 67,078 18,300 55,221
1998 357,000 330,000 28,274 28,200 30,301
John A. Bertrand
Senior Vice President &
President of A. O. Smith 2000 282,500 120,000 38,908 50,200 12,519
Electrical Products Company, 1999 255,000 250,000 42,245 15,200 33,610
a division of the Company 1998 220,000 220,000 22,606 15,100 19,427
Ronald E. Massa
Senior Vice President &
President of A. O. Smith 2000 275,583 120,000 20,269 50,200 56,075
Water Products Company, 1999 262,583 200,000 22,919 15,200 65,433
a division of the Company 1998 249,583 195,000 21,088 23,400 46,504
W. David Romoser 2000 257,000 115,000 25,342 34,900 12,629
Vice President, General 1999 245,000 185,000 24,539 10,500 46,563
Counsel and Secretary 1998 233,000 170,000 19,962 16,200 20,495

- --------------------------------------------------------------------------------
(1) Includes amounts earned during 2000 even if deferred.

(2) Includes amounts of tax reimbursements for the following: Company car,
country club, financial counseling and executive term life insurance
premiums and reimbursement of executive payments for term life insurance
premiums.

(3) See footnote (1) in Option Grants Table.

(4) All Other Compensation includes the amounts of: (a) Company contributions
under the Profit Sharing Retirement Plan (a 401(k) plan) and contributions
under the Supplemental Benefit Plan for the 401(k) plan and (b) the value
of the non-term portion of the premiums paid by the Company (arrived at by
treating the payment as an interest-free loan to the earliest possible date
the payment can be refunded and calculating its present value) for the
benefit of the named executive officers pursuant to the Executive Life
Insurance Plan, a split-dollar insurance plan. The amounts paid in 2000 are
as follows: Mr. O'Toole -- (a) $26,227 and (b) $35,819; Mr.
Bomberger -- (a) $14,062 and (b) $368; Mr. Bertrand -- (a) $10,108 and (b)
$2,411; Mr. Massa -- (a) $9,861 and (b) $46,214; and Mr. Romoser -- (a)
$9,196 and (b) $3,433.

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12

STOCK OPTION GRANTS

The table below reflects the stock option grants made under the Long-Term
Executive Incentive Compensation Plan to the five named executive officers
during 2000.

- --------------------------------------------------------------------------------
OPTION GRANTS TABLE
- --------------------------------------------------------------------------------

Option Grants in 2000

POTENTIAL REALIZABLE VALUE AT
ASSUMED ANNUAL RATES OF
STOCK PRICE APPRECIATION
INDIVIDUAL GRANTS FOR OPTION TERM(2)
- ----------------------------------------------------------------------------------------- -----------------------------
% OF
TOTAL
OPTIONS
OPTIONS GRANTED EXERCISE
GRANTED(1) TO ALL PRICE EXPIRATION 5% 10%
NAME (#) EMPLOYEES ($/SH) DATE ($) ($)
---- ---------- --------- -------- ---------- ------------- -------------

Robert J. O'Toole
Chairman, President and
Chief Executive Officer 196,900 32.55% $13.563 10/10/10 $ 1,679,498 $ 4,256,176
Glen R. Bomberger 60,600 10.00% $13.563 10/10/10 $ 516,900 $ 1,309,925
John A. Bertrand 50,200 8.30% $13.563 10/10/10 $ 428,191 $ 1,085,120
Ronald E. Massa 50,200 8.30% $13.563 10/10/10 $ 428,191 $ 1,085,120
W. David Romoser 34,900 5.80% $13.563 10/10/10 $ 297,686 $ 754,396
------- ------ ------------ ------------
Totals 392,800 64.90% N/A N/A $ 3,350,466 $ 8,490,737
======= ====== ============ ============
All Stockholders
(23,549,455 shares of Class A
Common Stock and Common Stock) N/A N/A N/A N/A $201,222,793 $507,848,000
Named Executive Officers' % of Total
Outstanding Shares N/A .17% N/A N/A .17% .17%

- --------------------------------------------------------------------------------
(1) All options were granted under the Long-Term Executive Incentive
Compensation Plan. The options were granted on 10/10/00 as options to
acquire Common Stock and are first exercisable on 10/10/01. All options were
granted at the average of market value on the date of grant and have a
10-year term.

(2) The dollar values in these columns represent assumed rates of appreciation
only, over the 10-year option term, at the 5% and 10% rates of appreciation
set by the Securities and Exchange Commission rules. These amounts are not
intended to predict or represent possible future appreciation of the
Company's Common Stock value. Actual gains, if any, on stock option
exercises and Common Stock holdings depend on future performance of the
Company's Common Stock and overall stock market conditions.

10
13

OPTION EXERCISES AND YEAR-END VALUES

The table includes information related to options exercised by the five
named executive officers during fiscal year 2000 and the number and value of
options held at the end of the fiscal year.

- --------------------------------------------------------------------------------
OPTION EXERCISES AND YEAR-END VALUE TABLE
- --------------------------------------------------------------------------------

Aggregated Option Exercises in Fiscal Year 2000, and December 31, 2000, Option
Values

NUMBER OF SECURITIES
UNDERLYING UNEXERCISED VALUE OF UNEXERCISED
OPTIONS AT IN-THE-MONEY OPTIONS AT
DECEMBER 31, 2000 (#) DECEMBER 31, 2000($)(1)
SHARES ACQUIRED VALUE --------------------------- ---------------------------
NAME ON EXERCISE(#) REALIZED($) EXERCISABLE UNEXERCISABLE EXERCISABLE UNEXERCISABLE
---- --------------- ----------- ----------- ------------- ----------- -------------

Robert J. O'Toole
Chairman, President
and Chief Executive
Officer 72,000 $541,476 773,550 196,900 $2,227,481 $688,559
Glen R. Bomberger 50,100 $365,820 252,750 60,600 $ 774,416 $211,918
John A. Bertrand 0 $ 0 115,050 50,200 $ 320,554 $175,549
Ronald E. Massa 0 $ 0 84,575 50,200 $ 13,772 $175,549
W. David Romoser 0 $ 0 86,100 34,900 $ 18,808 $122,045

- --------------------------------------------------------------------------------

(1) Based on the difference between the option exercise price and the closing
price on the New York Stock Exchange of $17.06 for the Common Stock on
December 29, 2000.

- --------------------------------------------------------------------------------
PENSION PLAN TABLE(1)
- --------------------------------------------------------------------------------

YEARS OF SERVICE(3)
------------------------------------------------------------
REMUNERATION(2)(4) 10 20 25 30 35 40
- ------------------ ------- ------- ------- -------- -------- --------

150,000 $22,245 $44,887 $56,109 $ 67,331 $ 78,553 $ 89,774
175,000 23,706 47,501 59,398 71,295 83,192 95,090
200,000 24,775 52,131 65,809 79,486 93,164 106,842
225,000 25,843 56,761 72,219 87,678 103,136 118,595
250,000 26,868 61,201 78,368 95,535 112,701 129,868
275,000 27,446 63,706 81,836 99,966 118,096 135,000*
300,000 and above 27,548 64,146 82,445 100,745 119,044 135,000*

- --------------------------------------------------------------------------------

(1) The Pension Plan Table shows estimated annual benefits payable to an
executive officer upon retirement under the A. O. Smith Retirement Plan,
assuming retirement at December 31, 2000, at age 65 and based upon the final
compensation and years of service set forth in the Table. Benefit amounts
were computed on a straight-life annuity basis.

(2) The compensation covered by the Plan is based on the average of the highest
5 years of annual compensation out of the last 10 years prior to retirement.
The amount included in the calculation of compensation, as reflected in the
Summary

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Compensation Table, is Salary and 50% of Bonus; but does not include Other
Annual Compensation, Long Term Compensation or All Other Compensation
amounts.

(3) Messrs. O'Toole, Bomberger, Bertrand, Massa, and Romoser had 37, 40, 33, 23,
and 8 years of service, respectively, at year-end.

(4) Maximum allowable salary that can be used in benefit calculation through
1994 is $235,840; in 1994, 1995 and 1996 is $150,000; and in 1997, 1998 and
1999 is $160,000 and 2000 is $170,000.

* Maximum annual benefit payment in 2000 is $135,000.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

The directors who served as members of the Personnel and Compensation
Committee during fiscal year 2000 were Tom H. Barrett, William F. Buehler,
Robert N. Pokelwaldt, Arthur O. Smith and Bruce M. Smith.

During 2000, the Company provided SICO consulting services; office space;
directors', officers' and group insurance coverage and other miscellaneous
services. The Company was reimbursed by SICO in the amount of $80,910 for the
Company's costs relating to such services. Mr. Glen R. Bomberger, an executive
officer and a director of the Company, is also a director of SICO and served as
a member of the Compensation Committee of SICO.

BOARD PERSONNEL AND COMPENSATION COMMITTEE REPORT
ON EXECUTIVE COMPENSATION

The Personnel and Compensation Committee (the "Committee") of the Board of
Directors is responsible for establishing an executive compensation program and
for administering the executive compensation policies and plans of the Company.
The Committee also determines the amount of compensation that the Company's
chief executive officer and other executive officers receive annually.

The Committee consists of four members, each of whom is an outside director
of the Company. This report was prepared by the Committee to provide the
Company's stockholders with a summary of its executive compensation policies and
practices.

The Committee has two primary objectives relating to the Company's
executive compensation program. The first is to recruit and retain high quality
executive leadership which is committed to achieving the current and long term
successful and profitable operations of the Company's businesses. The other is
to maintain an incentive compensation program which links executive pay to the
Company's return on investment.

In order to achieve these objectives, the Committee provides an executive
compensation program competitive with other comparably sized manufacturing
companies. The Committee believes that return on investment currently provides
the best measure of performance because it closely correlates the benefits to
the stockholders with the financial incentives for the executives. The Committee
has established ranges for financial incentives based upon return on investment,
with smaller incentive payments for a modest return on investment and larger
incentive payments for greater returns.

The Company's executive compensation program consists of three components:
base salary, short term incentive (bonus) compensation and long term incentive
(stock options) compensation. In determining the executive compensation
practices, the Committee compares the Company's executive compensation program
with other companies' compensation programs for executives with similar
management responsibilities. The companies surveyed include comparable
manufacturing businesses. The Committee reviews executive

12
15

compensation data bases and also this past year utilized an independent
compensation consultant for purposes of evaluating and reviewing the Company's
executive compensation program.

The Committee has designated certain executives, including the chief
executive officer ("CEO"), for compensation under the executive compensation
program in accordance with the performance criteria and standards described
below.

BASE SALARY

The Committee establishes competitive salary ranges for the executive
officers, generally at the median level of the salary ranges in the survey
referred to above. In addition, the Committee reviews each executive's
performance and accomplishments during the prior year as well as experience and
service with the Company in determining the annual base salary level for the
executive within the applicable salary range. In 2000, this methodology was
followed in establishing base salaries for the executive officers.

SHORT TERM INCENTIVE COMPENSATION

Short term incentive compensation is provided under the Executive Incentive
Compensation Plan ("EICP"). The EICP, consistent with the Company's philosophy
of linking compensation to the Company's return on investment, provides an
opportunity for executives to earn a cash bonus, the amount of which is based
upon the Company's and/or the operating unit's return on investment. Each year
the Committee sets minimum and maximum financial objectives for each of the
business units and the corporation. Achievement of these financial objectives by
the business or corporate units determines the amount of the Incentive
Compensation Fund available for the award of individual executive bonuses.

Incentive compensation, while predicated on the executive's unit meeting
its financial objective, is also based upon achievement of strategic objectives
established each year for the executive. In determining the amount of the
incentive compensation award to be paid to an individual executive, the
Committee considers the executive's scope of responsibility, contributions to
profit improvement and attainment of the individual's strategic objectives.
Approximately half of the incentive compensation award distributed to the
individual executive is based on the return on investment of the executive's
business unit and is formula-based between maximum and minimum target
achievement. The other half of the award is based upon accomplishment of the
executive's strategic objectives, such as development of personnel, planning,
maintenance of product leadership, continuous improvement programs and product
and process research and development. In 2000, the Committee made incentive
compensation awards to the participating executives based on these factors.

The maximum amount of incentive compensation payable to an executive during
any year is 200% of base salary. In order to be eligible for incentive
compensation, executives are required to enter into annual contracts (standard
incentive plan contracts required for all plan participants) which obligate them
to remain in the employment of the Company for the year.

LONG TERM INCENTIVE COMPENSATION

The Committee utilizes the shareholder approved Long Term Executive
Incentive Compensation Plan ("LTEICP") as another key component in carrying out
the Company's philosophy of linking the executive compensation program to the
stockholders' interests. The LTEICP consists of stock options which are granted
annually to the executives at the current market price of the stock on the date
of the grant. The size of the option grant to the executive is established at a
level commensurate with the median level of grants for the executive's position
as reported in the aforementioned survey data and studies by independent
compensation consultants.
13
16

Pursuant to the LTEICP, executives enter into standard plan contracts each year
which reflect the specific terms of the stock option grants and terms of
forfeiture should the executive leave the employment of the Company.

CEO COMPENSATION

The Committee, in establishing the 2000 compensation program for the Chief
Executive Officer, Robert J. O'Toole, employed the methodology and surveys
previously described in this report. In setting Mr. O'Toole's base salary for
2000, the Committee reviewed his accomplishments during the prior year,
experience, and service with the Company and determined to position it at the
median level of salaries of chief executive officers of comparable manufacturing
companies. Mr. O'Toole's bonus compensation for 2000 was directly related to the
Company's return on investment earned by the Company and reflected Committee set
minimum and maximum objectives. The maximum amount of bonus compensation payable
to Mr. O'Toole is 200% of base salary. The Committee made stock option grants to
Mr. O'Toole under the LTEICP consistent with the methodology utilized in making
grants to the other participating executives.

CONCLUDING REMARKS

The Committee reviewed executive compensation during 2000 and concluded
that the stockholders' interests were well served by the executive compensation
program. The Committee will continue to monitor and evaluate its executive
compensation program and make any adjustments determined to be appropriate. The
Committee has and intends to preserve the deductibility of executive
compensation paid by the Company in accordance with the provisions of Section
162(m) of the Internal Revenue Code of 1986, as amended.

PERSONNEL & COMPENSATION COMMITTEE

TOM H. BARRETT, CHAIRPERSON
WILLIAM F. BUEHLER, MEMBER
ARTHUR O. SMITH, MEMBER
BRUCE M. SMITH, MEMBER

14
17

PERFORMANCE GRAPH

The graph below shows a five-year comparison of the cumulative shareholder
return on the Company's common stock with the cumulative total return of
companies on the S&P Smallcap 600 and the S&P 600 Electrical Equipment Index,
all of which are published indices.

COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
FROM DECEMBER 31, 1995 TO DECEMBER 31, 2000

ASSUMES $100 INVESTED WITH REINVESTMENT OF DIVIDENDS

[PERFORMANCE GRAPH]

- -----------------------------------------------------------------------------------------------------------------------
INDEXED RETURNS
BASE YEARS ENDING
PERIOD --------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------
COMPANY/INDEX 12/31/95 12/31/96 12/31/97 12/31/98 12/31/99 12/31/00
- -----------------------------------------------------------------------------------------------------------------------

SMITH (A O) CORP 100.00 147.98 213.24 189.33 171.81 137.97
- -----------------------------------------------------------------------------------------------------------------------
S&P SMALLCAP 600 INDEX 100.00 121.32 152.36 150.37 169.02 188.96
- -----------------------------------------------------------------------------------------------------------------------
S&P 600 ELECTRICAL EQUIPMENT 100.00 114.00 140.36 141.92 218.65 211.49
- -----------------------------------------------------------------------------------------------------------------------

15
18

COMPLIANCE WITH SECTION 16(A) OF THE
SECURITIES EXCHANGE ACT

Section 16(a) of the Securities Exchange Act of 1934 requires the Company's
directors and executive officers, and persons who own more than ten percent of a
registered class of the Company's equity securities, to file reports of
ownership and changes in ownership with the Securities and Exchange Commission
and the New York and American Stock Exchanges. Executive officers, directors and
greater than ten percent shareholders are required by SEC regulations to furnish
the Company with copies of all Section 16(a) Forms 3, 4 and 5 which they file.

Based solely on its review of the copies of such forms received by the
Company and written representations from certain reporting persons during fiscal
year 2000, the Company believes that all filing requirements applicable to its
executive officers, directors and greater than ten percent beneficial owners
were met.

REPORT OF THE AUDIT COMMITTEE

The primary responsibility of the Audit Committee is to oversee the
Company's financial reporting process on behalf of the Board and to report the
results of the Committee's activities to the Board. Management has the primary
responsibility for the financial statements and reporting process, including the
systems of internal control, and Ernst & Young LLP (the independent auditors) is
responsible for auditing those financial statements. We have reviewed and
discussed with management and the independent auditors the Company's audited
financial statements as of and for the year ended December 31, 2000.

We have discussed with the independent auditors the matters required to be
discussed by Statement on Auditing Standards No. 61, Communication with Audit
Committees, as amended, by the Auditing Standards Board of the American
Institute of Certified Public Accountants.

We have received and reviewed the written disclosures and the letter from
the independent auditors required by Independence Standard No. 1, Independence
Discussions with Audit Committees, as amended, by the Independence Standards
Board, and have discussed with the auditors their independence. In addition, we
have considered the compatibility of nonaudit services with the auditors'
independence.

In reliance on the reviews and discussions referred to above, we
recommended to the Board of Directors that the audited financial statements,
referred to above, be included in the Company's Annual Report on Form 10-K for
the year ended December 31, 2000, filed with the Securities and Exchange
Commission. The committee and the board have also recommended, subject to
shareholder approval, the selection of Ernst & Young LLP, as the Company's
independent auditors for fiscal 2001.

Kathleen J. Hempel, Chairperson
W. Michael Barnes, Committee Member
Dr. Agnar Pytte, Committee Member

APPOINTMENT OF INDEPENDENT AUDITORS

The Board of Directors of the Company has appointed Ernst & Young LLP,
Certified Public Accountants, as the Company's independent auditors for 2001.
The action of the Board of Directors was taken upon the recommendation of its
Audit Committee. Fees for the last annual audit were $282,000 and all other fees
were $489,000, including audit related services of $213,000 and nonaudit
services of $276,000. Audit related services are principally fees for foreign
statutory audits and certain accounting consultations. Nonaudit services pertain
to
16
19

tax consulting services. The Audit Committee has considered whether the fees of
Ernst & Young LLP for nonaudit services is compatible with maintaining Ernst &
Young LLP's independence. Although not required to be submitted to a vote of the
stockholders, the Board of Directors believes it appropriate to obtain
stockholder ratification of the Board's action in appointing Ernst & Young LLP
as the Company's independent auditors. Should such appointment not be ratified,
the Board of Directors will reconsider the matter.

OTHER BUSINESS

Management is not aware of any matters other than those stated above that
may be presented for action at the meeting, but should any matter requiring a
vote of the stockholders arise, it is intended that proxies solicited will be
voted in respect thereof in accordance with the discretion of the person or
persons voting the proxies.

DATE FOR STOCKHOLDER PROPOSALS

Proposals of stockholders intended to be presented at the 2002 annual
meeting of stockholders must be received by the Company no later than November
3, 2001, to be included in the Company's proxy materials for the 2002 meeting.
If a stockholder who otherwise desires to bring a proposal before the 2002
meeting does not notify the Company of its intent to do so on or before January
18, 2002, then the proposal will be untimely, and the proxies will be able to
vote on the proposal in their discretion.

March 5, 2001

EVEN IF YOU PLAN TO ATTEND THE MEETING, PLEASE COMPLETE, DATE AND SIGN THE
ENCLOSED PROXY AND MAIL IT PROMPTLY IN THE ENCLOSED ENVELOPE, OR VOTE YOUR
SHARES VIA THE TELEPHONE OR INTERNET. IF YOU ATTEND THE MEETING, YOU MAY REVOKE
YOUR PROXY AND VOTE YOUR SHARES IN PERSON.

17
20

EXHIBIT A

A. O. SMITH CORPORATION

AUDIT COMMITTEE CHARTER

The Audit Committee shall provide assistance to the Board of Directors in
fulfilling the Board's oversight responsibility relating to the Company's
financial statements and the financial reporting process, the systems of
internal control and financial controls, the internal audit function, the annual
independent audit of the Company's financial statements, and the legal
compliance and ethics programs as established by management and the Board. In so
doing, it is the responsibility of the Committee to attempt to ensure that there
is free and open communication among the Committee, independent auditors, the
internal auditors and management of the Company. The Committee is empowered to
investigate any matter brought to its attention with full access to all books,
records, facilities and personnel of the Company and the power to retain outside
counsel or other experts for this purpose. In carrying out its responsibilities,
the Committee is not providing any expert or special assurance as to the
Company's financial statements or any professional certification as to the work
of the Company's independent auditors.

Organization

This charter governs the composition and operations of the Audit Committee. The
Committee shall review and reassess the adequacy of this charter at least
annually and recommend any appropriate changes to the Board of Directors for
approval. The Committee shall be annually appointed by the Board of Directors
and shall consist of at least three Directors, each of whom is independent.
Members of the Committee shall be considered independent if they have no
relationship that may interfere with the exercise of their independence from
management and the Company. All Committee members shall be financially literate,
and at least one member shall have accounting or related financial management
expertise.

Responsibility and Processes

The primary responsibility of the Audit Committee is to oversee the Company's
financial reporting process on behalf of the Board and to report the results of
the Committee's activities to the Board. Management is responsible for preparing
the Company's financial statements, and the independent auditors are responsible
for auditing those financial statements.

The following shall be the principal recurring processes of the Audit Committee
in carrying out its oversight responsibilities. The processes are set forth as a
guide with the understanding that the Committee may supplement them as
appropriate.

- - The independent auditors are ultimately accountable to the Board and the Audit
Committee, as representatives of the Company's shareholders. The Committee,
together with the Board, shall have the ultimate authority and responsibility
to evaluate and, where appropriate, replace the independent auditors.
Annually, the Committee shall review and recommend to the Board the selection
of the Company's independent auditors, which may be subject to shareholders'
approval.

- - The Committee shall ensure that the independent auditors submit on an annual
basis to the Committee a formal written statement delineating all
relationships between such firm and the Company, consistent with Independence
Standards Board Standard 1, actively engage in a dialogue with such firm with
respect to any disclosed relationships or services that may impact the
objectivity and independence of the firm and take or

18
21

recommend that the Board of Directors take appropriate action in response to
the firm's report to satisfy itself as to the firm's independence.

- - The Committee shall review and approve annual audit fees and review the nature
and cost of the non-audit services provided by the independent auditors.

- - The Committee shall discuss with the internal auditors and the independent
auditors the overall scope and plans for their respective audits including the
adequacy of staffing. Also, the Committee shall discuss with management, the
internal auditors, and the independent auditors the adequacy and effectiveness
of the accounting and financial controls, including the Company's system to
monitor and manage business risk, and legal and ethical compliance programs.
The Committee shall review the independent auditors' management letter and
recommendations and management's response. Further, the Committee shall meet
separately with the independent auditors and internal auditors, without
management present, to discuss the results of their examinations.

- - The Committee shall review major accounting policy changes adopted by the
Company. In addition, the Committee shall maintain current knowledge on the
major new or proposed technical requirements, regulations, or legislation
affecting the Company.

- - The Committee shall review with management and the independent auditors the
financial statements to be included in the Company's Annual Report on Form
10-K including their judgment about the quality, not just acceptability, of
the selection and application of accounting principles, the reasonableness of
significant judgments and the clarity of the disclosures in the financial
statements, and determine whether to recommend to the Board of Directors that
the audited financial statements be included in the Annual Report on Form
10-K. Also, the Committee shall review the results of the annual audit and any
other matters required to be communicated to the Committee by the independent
auditors under generally accepted auditing standards.

- - Prior to the release of quarterly earnings, if in the opinion of management or
the independent auditors there are matters to be reviewed with the Committee,
including any matters required to be communicated to the Committee by the
independent auditors under generally accepted auditing standards, a discussion
shall be held with the Committee chair or another Committee member.

- - The Committee shall meet periodically with management to review the Company's
major financial risk exposures and steps management has taken to monitor and
control such exposures.

While the Committee has the responsibilities and powers set forth above, it is
not the duty of the Committee to plan or conduct audits, and the Committee is
not responsible for the preparation, content, integrity or objectivity of the
Company's financial statements. These are the responsibility of management and
the Company's independent public accountants. Further, it is not the duty of the
Committee to resolve disagreements, if any, between management and the Company's
independent public accountants, to assure compliance with laws and regulations
or the Company's rules, policies and procedures, or to conduct investigations.

19
22

[AO SMITH CORPORATION LOGO]
23

COMPANY #
CONTROL #

THERE ARE THREE WAYS TO VOTE YOUR PROXY

YOUR TELEPHONE OR INTERNET VOTE AUTHORIZES THE NAMED PROXIES TO VOTE YOUR SHARES
IN THE SAME MANNER AS IF YOU MARKED, SIGNED AND RETURNED YOUR PROXY CARD.

VOTE BY PHONE--TOLL FREE--1-800-240-6326--QUICK***EASY***IMMEDIATE

- - Use any touch-tone telephone to vote your proxy 24 hours a day, 7 days a
week, until 12:00 p.m. (ET) on April 3, 2001.
- - You will be prompted to enter your 3-digit Company Number and your 7-digit
Control Number which are located above.
- - Follow the simple instructions the Voice provides you.

VOTE BY INTERNET--http://www.eproxy.com/AOS/--QUICK***EASY***IMMEDIATE

- - Use the Internet to vote your proxy 24 hours a day, 7 days a week, until
12:00 p.m. (CT) on April 3, 2001.
- - You will be prompted to enter your 3-digit Company Number and your 7-digit
Control Number which are located above to obtain your records and create an
electronic ballot.

VOTE BY MAIL

Mark, sign and date your proxy card and return it in the postage-paid envelope
we've provided or return it to A. O. SMITH CORPORATION, c/o Shareowner
Services(SM), P.O. Box 64873, St. Paul, MN 55164-0873.

IF YOU VOTE BY PHONE OR INTERNET, PLEASE DO NOT MAIL YOUR PROXY CARD
\/ Please detach here \/

A. O. SMITH CORPORATION 2001 ANNUAL MEETING
PROXY - COMMON STOCK

This proxy when properly executed will be voted in the manner directed herein by
the undersigned. If no direction is made, this proxy will be voted FOR proposals
1 and 2.

1. Election of directors: 01 William F. Buehler 02 Kathleen J. Hempel /__/ Vote FOR /__/ Vote WITHHELD
all nominees from all nominees
(except as marked)

(INSTRUCTIONS: TO WITHHOLD AUTHORITY TO VOTE FOR ANY INDICATED NOMINEE,
WRITE THE NUMBER(S) OF THE NOMINEE(S) IN THE BOX PROVIDED TO THE RIGHT.)
-------------------------------

2. Proposal to approve the ratification of Ernst & Young LLP as the independent /__/ FOR /__/ AGAINST /__/ ABSTAIN
auditors of the corporation:

DIRECTORS RECOMMEND A VOTE FOR.

Address change? Mark Box /__/ Date
Indicate changes below: -----------------------------------

----------------------------------------------------
Signature(s) in Box
Please sign exactly as your name appears hereon.
When shares are held by joint tenants, both should
sign. When signing as attorney, executor,
administrator, trustee or guardian, please give full
title as such. If a corporation, please sign in full
corporate name by President or other authorized
officer. If a partnership, please sign in
partnership name by authorized person.

A. O. SMITH CORPORATION

ANNUAL MEETING OF STOCKHOLDERS

WEDNESDAY, APRIL 4, 2001
10:30 A.M. EASTERN TIME

HOTEL DU PONT
11TH AND MARKET STREETS
WILMINGTON, DELAWARE 19801

A. O. SMITH CORPORATION
PROXY - COMMON STOCK

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints ROBERT J. O'TOOLE, KENNETH W. KRUEGER and W.
DAVID ROMOSER, or any one of them, with full power of substitution, as proxy or
proxies of the undersigned to attend the annual meeting of stockholders of A. O.
Smith Corporation to be held on April 4, 2001, at 10:30 a.m. Eastern Time, at
the Hotel du Pont, 11th and Market Streets, Wilmington, Delaware, or at any
adjournment thereof, and there to vote all shares of Common Stock which the
undersigned would be entitled to vote if personally present as specified upon
the following matters and in their discretion upon such other matters as may
properly come before the meeting.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER
DIRECTED HEREIN BY THE UNDERSIGNED. IF NO DIRECTION IS
MADE, THIS PROXY WILL BE VOTED FOR PROPOSALS 1 AND 2.

PLEASE VOTE BY TELEPHONE OR THE INTERNET OR MARK, SIGN, DATE
AND RETURN THE PROXY CARD PROMPTLY USING THE ENCLOSED ENVELOPE.

See reverse for voting instructions.

COMPANY #
CONTROL #

THERE ARE THREE WAYS TO VOTE YOUR PROXY

YOUR TELEPHONE OR INTERNET VOTE AUTHORIZES THE NAMED PROXIES TO VOTE YOUR SHARES
IN THE SAME MANNER AS IF YOU MARKED, SIGNED AND RETURNED YOUR PROXY CARD.

VOTE BY PHONE--TOLL FREE--1-800-240-6326--QUICK***EASY***IMMEDIATE

VOTE BY INTERNET--http://www.eproxy.com/AOS/--QUICK***EASY***IMMEDIATE

VOTE BY MAIL

IF YOU VOTE BY PHONE OR INTERNET, PLEASE DO NOT MAIL YOUR PROXY CARD
\/ Please detach here \/

A. O. SMITH CORPORATION 2001 ANNUAL MEETING
PROXY - CLASS A COMMON STOCK

This proxy when properly executed will be voted in the manner directed herein by
the undersigned. If no direction is made, this proxy will be voted FOR proposals
1 and 2.

1. Election of directors: 01 W. Michael Barnes 02 Glen R. Bomberger 03 Robert J. O'Toole
04 Dr. Agnar Pytte 05 Bruce M. Smith 06 Mark D. Smith /__/ Vote FOR /__/ Vote WITHHELD
all nominees from all nominees
(except as marked)

(INSTRUCTIONS: TO WITHHOLD AUTHORITY TO VOTE FOR ANY INDICATED NOMINEE,
WRITE THE NUMBER(S) OF THE NOMINEE(S) IN THE BOX PROVIDED TO THE RIGHT.)
-------------------------------

2. Proposal to approve the ratification of Ernst & Young LLP as the independent /__/ FOR /__/ AGAINST /__/ ABSTAIN
auditors of the corporation:

DIRECTORS RECOMMEND A VOTE FOR.

Address change? Mark Box /__/ Date
Indicate changes below: ---------------------------------

A. O. SMITH CORPORATION

ANNUAL MEETING OF STOCKHOLDERS

WEDNESDAY, APRIL 4, 2001
10:30 A.M. EASTERN TIME

HOTEL DU PONT
11TH AND MARKET STREETS
WILMINGTON, DELAWARE 19801

A. O. SMITH CORPORATION
PROXY - CLASS A COMMON STOCK

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints ROBERT J. O'TOOLE, KENNETH W. KRUEGER and W.
DAVID ROMOSER, or any one of them, with full power of substitution, as proxy or
proxies of the undersigned to attend the annual meeting of stockholders of A. O.
Smith Corporation to be held on April 4, 2001, at 10:30 a.m. Eastern Time, at
the Hotel du Pont, 11th and Market Streets, Wilmington, Delaware, or at any
adjournment thereof, and there to vote all shares of Class A Common Stock which
the undersigned would be entitled to vote if personally present as specified
upon the following matters and in their discretion upon such other matters as
may properly come before the meeting.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER
DIRECTED HEREIN BY THE UNDERSIGNED. IF NO DIRECTION IS
MADE, THIS PROXY WILL BE VOTED FOR PROPOSALS 1 AND 2.

PLEASE VOTE BY TELEPHONE OR THE INTERNET OR MARK, SIGN, DATE AND RETURN
THE PROXY CARD PROMPTLY USING THE ENCLOSED ENVELOPE.

See reverse for voting instructions.

COMPANY #
CONTROL #

THERE ARE THREE WAYS TO VOTE YOUR PROXY

YOUR TELEPHONE OR INTERNET VOTE AUTHORIZES THE NAMED PROXIES TO VOTE YOUR SHARES
IN THE SAME MANNER AS IF YOU MARKED, SIGNED AND RETURNED YOUR PROXY CARD.

VOTE BY PHONE--TOLL FREE--1-800-240-6326--QUICK***EASY***IMMEDIATE

VOTE BY INTERNET--http://www.eproxy.com/AOS/--QUICK***EASY***IMMEDIATE

VOTE BY MAIL

IF YOU VOTE BY PHONE OR INTERNET, PLEASE DO NOT MAIL YOUR PROXY CARD
\/ Please detach here \/

A. O. SMITH CORPORATION 2001 ANNUAL MEETING
VOTING INSTRUCTIONS

Voting Instructions to the Trustee: If no choices are marked below, the Trustee
will vote FOR proposals 1 and 2.

1. Election of directors: 01 William F. Buehler 02 Kathleen J. Hempel /__/ Vote FOR /__/ Vote WITHHELD
all nominees from all nominees
(except as marked)

(INSTRUCTIONS: TO WITHHOLD AUTHORITY TO VOTE FOR ANY INDICATED NOMINEE,
WRITE THE NUMBER(S) OF THE NOMINEE(S) IN THE BOX PROVIDED TO THE RIGHT.)
-------------------------------

2. Proposal to approve the ratification of Ernst & Young LLP as the independent /__/ FOR /__/ AGAINST /__/ ABSTAIN
auditors of the corporation:

DIRECTORS RECOMMEND A VOTE FOR.

Address change? Mark Box /__/ Date
Indicate changes below: -----------------------------------

----------------------------------------------------
Signature(s) in Box
Please sign exactly as your name appears on this
proxy. When signing as attorney, executor,
administrator, trustee or guardian, please give full
title as such.

A. O. SMITH CORPORATION

ANNUAL MEETING OF STOCKHOLDERS

WEDNESDAY, APRIL 4, 2001
10:30 A.M. EASTERN TIME

HOTEL DU PONT
11TH AND MARKET STREETS
WILMINGTON, DELAWARE 19801

A. O. SMITH CORPORATION

VOTING INSTRUCTIONS TO THE MARSHALL & ILSLEY TRUST COMPANY
TRUSTEE OF THE A. O. SMITH PROFIT
SHARING RETIREMENT PLAN

THIS VOTING INSTRUCTION IS SOLICITED ON BEHALF OF THE TRUSTEE

The undersigned hereby directs the Marshall & Ilsley Trust Company, Trustee of
the A. O. Smith Profit Sharing Retirement Plan, to vote the shares of A. O.
Smith Corporation Common Stock allocated to the undersigned's account in said
Trust at the Annual Meeting to be held on April 4, 2001, and all adjournments.

VOTING INSTRUCTIONS TO THE TRUSTEE: IF NO CHOICES ARE MARKED, THE TRUSTEE WILL
VOTE FOR PROPOSALS 1 AND 2.

PLEASE VOTE BY TELEPHONE OR THE INTERNET OR MARK, SIGN, DATE AND RETURN
THE PROXY CARD PROMPTLY USING THE ENCLOSED ENVELOPE.

See reverse for voting instructions.