1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 13, 1997
 
                                                      REGISTRATION NO. 333-12319
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ---------------------
 
                         POST-EFFECTIVE AMENDMENT NO. 4
                                       TO
 
                                    FORM S-4
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933
                             ---------------------
 
                             SERVICE EXPERTS, INC.
             (Exact Name of Registrant as Specified in Its Charter)
 

                                                                
            DELAWARE                             7623                            62-1639453
 (State or Other Jurisdiction of     (Primary Standard Industrial             (I.R.S. Employer
 Incorporation or Organization)       Classification Code Number)          Identification Number)

 
                         111 WESTWOOD PLACE, SUITE 420
                           BRENTWOOD, TENNESSEE 37027
                                 (615) 371-9990
  (Address, Including Zip Code, and Telephone Number, Including Area Code, of
                   Registrant's Principal Executive Offices)
 
                                ALAN R. SIELBECK
                             CHAIRMAN OF THE BOARD
                          AND CHIEF EXECUTIVE OFFICER
                             SERVICE EXPERTS, INC.
                         111 WESTWOOD PLACE, SUITE 420
                           BRENTWOOD, TENNESSEE 37027
                                 (615) 371-9990
 (Name, Address, Including Zip Code, and Telephone Number, Including Area Code,
                             of Agent for Service)
 
                             ---------------------
 
                                    COPY TO:
 
                              J. CHASE COLE, ESQ.
                         WALLER LANSDEN DORTCH & DAVIS,
                    A PROFESSIONAL LIMITED LIABILITY COMPANY
                           2100 NASHVILLE CITY CENTER
                                511 UNION STREET
                           NASHVILLE, TENNESSEE 37219
                                 (615) 244-6380
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC: From time to
time after the effective date of this Registration Statement.
                             ---------------------
 
     If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box.  [ ]
                             ---------------------
 
     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SECTION 8(A), MAY
DETERMINE.
================================================================================
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                                EXPLANATORY NOTE
 
     The purpose of this Post-Effective Amendment No. 4 is to file with the
Securities and Exchange Commission the Form of Common Stock Warrant included as
Exhibit 4.3 to the Registration Statement. The Registrant intends to issue
Warrants to purchase shares of its Common Stock registered pursuant to this
Registration Statement from time to time in connection with acquisitions of the
assets or stock of heating, ventilating and air conditioning service and
replacement businesses. The Prospectus included in Post-Effective Amendment No.
3 filed May 15, 1997 remains unchanged and therefore is not included herein.
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                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
     (a) The Delaware General Corporation Law ("DGCL") provides that a
corporation may indemnify any person made party to an action by reason of such
person's status as a director, officer, employee or agent of the corporation
against expenses, judgments, fines and settlements provided such person acted
(i) in good faith, (ii) in a manner reasonably believed to be in or not opposed
to the best interests of the Corporation and (iii) with respect to a criminal
action, had no reasonable cause to believe such person's conduct was unlawful.
The termination of an action by a judgment, order, settlement, conviction or
plea of nolo contendere shall not create a presumption that a person did not
meet the standard of conduct set forth above. In actions brought by or in the
right of the corporation, however, the DGCL provides that no indemnification may
be made if the person was adjudged to be liable to the corporation unless and
only to the extent that the Court of Chancery or the court in which such action
was brought shall determine upon application that, despite the adjudication of
liability but in view of all circumstances of the case, such person is fairly
and reasonably entitled to indemnity for such expenses which the court shall
deem proper. To the extent that a person is successful, on the merits or
otherwise, in the defense of any proceeding instigated because of his or her
status as a director, officer, employee or agent of a corporation, the DGCL
mandates that the corporation indemnify such person against reasonable expenses
incurred in the proceeding. A corporation may advance litigation expenses,
including attorneys' fees, to a person who is a party to a proceeding upon such
person undertaking to repay such amount if it shall ultimately be determined
that such person is not entitled to indemnification. The indemnification and
advancement of expenses under the DGCL are not deemed exclusive of any other
rights to which a person may be entitled under any bylaw, agreement, vote of
shareholders or disinterested directors or otherwise.
 
     (b) Article VII of the Registrant's Restated Certificate of Incorporation
provides as follows:
 
          (i) The Corporation shall indemnify, and upon request shall advance
     expenses (including attorneys' fees) to, in the manner and to the fullest
     extent permitted by law, any officer or director (or the estate of any such
     person) who was or is a party to, any threatened, pending or completed
     action, suit or proceeding, whether civil, criminal, administrative,
     investigative or otherwise, by reason of the fact that such person is or
     was a director or officer of the Corporation, or is or was serving at the
     request of the Corporation as a director, officer, partner, trustee,
     employee or agent of another corporation, partnership, joint venture,
     trust, other enterprise or employee benefit plan (an "indemnitee"). The
     Corporation may, to the fullest extent permitted by law, purchase and
     maintain insurance on behalf of any person who is or was a director,
     officer, employee or agent of the Corporation, or is or was serving at the
     request of the Corporation as a director, officer, partner, trustee,
     employee or agent of another corporation, partnership, joint venture,
     trust, other enterprise or employee benefit plan against any liability
     which may be asserted against such person. To the fullest extent permitted
     by law, the indemnification and advances provided for herein shall include
     expenses (including attorneys' fees), judgments, penalties, fines and
     amounts paid in settlement. The indemnification provided herein shall not
     be deemed to limit the right of the Corporation to indemnify and any other
     person for any such expenses (including attorneys' fees), judgments, fines
     and amounts paid in settlement to the fullest extent permitted by law, both
     as to action in his official capacity and as to action in another capacity
     while holding such office.
 
          (ii) Notwithstanding the foregoing, the Corporation shall not
     indemnify any such indemnitee who was or is a party or is threatened to be
     made a party to any threatened, pending or completed action or suit by or
     in the right of the Corporation to secure a judgment in its favor against
     such indemnitee with the Corporation, unless and only to the extent that,
     the Court of Chancery or the court in which such action or suit was brought
     shall determine upon application that, despite the adjudication of
     liability but in view of all the circumstances of the case, such indemnitee
     is fairly and reasonably entitled to indemnity for such expenses which the
     Court of Chancery or such other court shall deem proper.
 
          (iii) The rights to indemnification and advancement of expenses set
     forth in this Article VII are intended to be greater than those which are
     otherwise provided for in the General Corporation Law of the
 
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     State of Delaware, are contractual between the Corporation and the person
     being indemnified, his heirs, executors and administrators, and, with
     respect to this Article VII are mandatory, notwithstanding a person's
     failure to meet the standard of conduct required for permissive
     indemnification under the General Corporation Law of the State of Delaware,
     as amended from time to time. The rights to indemnification and advancement
     of expenses set forth in this Article VII are nonexclusive of other similar
     rights which may be granted by law, this Certificate, the Bylaws, a
     resolution of the Board of Directors or stockholders or an agreement with
     the Corporation, which means of indemnification and advancement of expenses
     are hereby specifically authorized.
 
          (iv) Any repeal or modification of the provisions of this Article VII,
     either directly or by the adoption of an inconsistent provision of this
     Certificate, shall be prospective only and shall not adversely affect any
     right or protection set forth herein existing in favor of a particular
     individual at the time of such repeal or modification. In addition, if an
     amendment to the General Corporation Law of the State of Delaware limits or
     restricts in any way the indemnification rights permitted by law as of the
     date hereof, such amendment shall apply only to the extent mandated by law
     and only to activities of persons subject to indemnification under this
     Article VII which occur subsequent to the effective date of such amendment.
 
     (c) The Company has obtained insurance for its directors and executive
officers in amounts of $5,000,000 per claim and $5,000,000 for aggregate claims.
 
ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
     (a) Exhibits
 


EXHIBIT
NUMBER                           DESCRIPTION OF EXHIBITS
- -------                          -----------------------
         
 3.1      --   Restated Certificate of Incorporation of the Registrant(a)
 3.2      --   Bylaws of the Registrant(a)
 4.1      --   Form of Common Stock Certificate(b)
 4.2      --   Form of Subordinated Indenture(c)
 4.3      --   Form of Common Stock Warrant
 5        --   Opinion of Waller Lansden Dortch & Davis, A Professional
               Limited Liability Company(c)
10.1      --   Registrant's 1996 Incentive Stock Plan(a)
10.2      --   Registrant's 1996 Non-Employee Director Stock Option Plan(a)
10.3      --   Registrant's 1996 Employee Stock Purchase Plan(a)
10.4      --   Form of Combination Agreement by and among each of the
               Predecessor Companies, each of its respective stockholders
               and the Registrant(a)
10.5      --   Form of Agreement and Plan of Merger among certain of the
               Acquired Companies, a wholly-owned subsidiary of the
               Registrant and the Registrant(d)
10.6      --   Form of Combination Agreement between certain of the
               Acquired Companies and the Registrant(d)
10.7      --   Employment Agreement, dated June 26, 1996, between the
               Registrant and Alan R. Sielbeck(a)
10.8      --   Employment Agreement, dated June 26, 1996, between the
               Registrant and James D. Abrams(a)
10.9      --   Employment Agreement, dated June 26, 1996, between the
               Registrant and Anthony M. Schofield(a)
10.10     --   Form of Employment Agreement between the Registrant and
               certain of its employees(a)
10.11     --   Form of Escrow Agreement between the Registrant, each of the
               stockholders of the Subsidiaries and the escrow agent(a)
10.12     --   Form of Equitable Securities Corporation Stock Purchase
               Warrant(a)
10.13     --   Loan Agreement, dated September 10, 1996, between the
               Registrant and SunTrust Bank, Nashville, N.A.(c)
21        --   List of subsidiaries of the Registrant
23.1      --   Consent of Ernst & Young LLP(c)
23.2      --   Consent of Waller Lansden Dortch & Davis, A Professional
               Limited Liability Company (included in Exhibit 5)(c)
24        --   Power of Attorney(c)

 
                                      II-2
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- ---------------
 
(a)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form S-1, Registration No. 333-07037.
(b)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form 8-A, File No. 000-21173.
(c)  Filed previously.
(d)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form S-1, Registration No. 333-21971.
 
     (b) Financial Statement Schedules
 
          All other schedules for which provision is made in the applicable
     accounting regulations of the Commission are not required under the related
     instructions or are inapplicable, and therefore have been omitted.
 
ITEM 22.  UNDERTAKINGS.
 
     The undersigned registrant hereby undertakes:
 
          (1) To file, during any period in which offers or sales are being
     made, a post-effective amendment to this Registration Statement:
 
             (i) To include any prospectus required by Section 10(a)(3) of the
        Securities Act of 1933;
 
             (ii) To reflect in the prospectus any facts or events arising after
        the effective date of the registration statement (or the most recent
        post-effective amendment thereof) which, individually or in the
        aggregate, represent a fundamental change in the information set forth
        in the registration statement. Notwithstanding the foregoing, any
        increase or decrease in volume of securities offered (if the total
        dollar value of securities offered would not exceed that which was
        registered) and any deviation from the low or high end of the estimated
        maximum offering range may be reflected in the form of prospectus filed
        with the Commission pursuant to Rule 424(b) if, in the aggregate, the
        changes in volume and price represent no more than a 20% change in the
        maximum aggregate offering price set forth in the "Calculation of
        Registration Fee" table in the effective registration statement;
 
             (iii) To include any material information with respect to the plan
        of distribution not previously disclosed in the registration statement
        or any material change to such information in the registration
        statement.
 
          (2) That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.
 
          (3) To remove from registration by means of a post-effective amendment
     any of the securities being registered which remain unsold at the
     termination of the offering.
 
     The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.
 
     The undersigned registrant hereby undertakes as follows: that prior to any
public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this registration statement, by any person or
party who is deemed to be an underwriter within the meaning of Rule 145(c), the
issuer undertakes that such reoffering prospectus will contain the information
called for by the applicable registration form with respect to
 
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reofferings by persons who may be deemed underwriters, in addition to the
information called for by the other Items of the applicable form.
 
     The registrant undertakes that every prospectus (i) that is filed pursuant
to the paragraph immediately preceding, or (ii) that purports to meet the
requirements of section 10(a)(3) of the Act and is used in connection with an
offering of securities subject to Rule 415 will be filed as part of an amendment
to the registration statement and will not be used until such amendment is
effective, and that, for purposes of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
 
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.
 
     The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.
 
     The undersigned Registrant hereby undertakes to file an application for the
purpose of determining the eligibility of the trustee to act under subsection
(a) of section 310 of the Trust Indenture Act (the "TIA") in accordance with the
rules and regulations prescribed by the Commission under Section 305(b)(2) of
the TIA.
 
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                                   SIGNATURES
 
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Post-Effective Amendment No. 4 to Registration Statement to
be signed on its behalf by the undersigned, thereunto duly authorized, in the
City of Nashville, State of Tennessee, on June 13, 1997.
 
                                          SERVICE EXPERTS, INC.
 
                                          By:       /s/ ALAN R. SIELBECK
                                            ------------------------------------
                                                      Alan R. Sielbeck
                                                        Chairman and
                                                  Chief Executive Officer
 
     Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment No. 4 to Registration Statement has been signed by the
following persons in the capacities and on the dates indicated.
 


                        NAME                                         TITLE(S)                    DATE
                        ----                                         --------                    ----
                                                                                       
 
                /s/ ALAN R. SIELBECK                     Chairman of the Board and Chief     June 13, 1997
- -----------------------------------------------------      Executive Officer (principal
                  Alan R. Sielbeck                         executive officer)
 
                          *                              President and Chief Operating       June 13, 1997
- -----------------------------------------------------      Officer; Director
                   James D. Abrams
 
              /s/ ANTHONY M. SCHOFIELD                   Chief Financial Officer             June 13, 1997
- -----------------------------------------------------      (principal financial and
                Anthony M. Schofield                       accounting officer)
 
                          *                              Director                            June 13, 1997
- -----------------------------------------------------
                 Raymond J. DeRiggi
 
                          *                              Director                            June 13, 1997
- -----------------------------------------------------
                   Norman T. Rolf
 
                          *                              Director                            June 13, 1997
- -----------------------------------------------------
                   William G. Roth
 
                                                         Director
- -----------------------------------------------------
                 Timothy G. Wallace
 
             * /s/ ANTHONY M. SCHOFIELD                                                      June 13, 1997
- ----------------------------------------------------
       Anthony M. Schofield, Attorney-in-Fact

 
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                               INDEX TO EXHIBITS
 


EXHIBIT
NUMBER                           DESCRIPTION OF EXHIBITS
- -------                          -----------------------
         
 3.1       --  Restated Certificate of Incorporation of the Registrant(a)
 3.2       --  Bylaws of the Registrant(a)
 4.1       --  Form of Common Stock Certificate(b)
 4.2       --  Form of Subordinated Indenture(c)
 4.3       --  Form of Common Stock Warrant
 5         --  Opinion of Waller Lansden Dortch & Davis, A Professional
               Limited Liability Company(c)
10.1       --  Registrant's 1996 Incentive Stock Plan(a)
10.2       --  Registrant's 1996 Non-Employee Director Stock Option Plan(a)
10.3       --  Registrant's 1996 Employee Stock Purchase Plan(a)
10.4       --  Form of Combination Agreement by and among each of the
               Predecessor Companies, each of its respective stockholders
               and the Registrant(a)
10.5       --  Form of Agreement and Plan of Merger among certain of the
               Acquired Companies, a wholly-owned subsidiary of the
               Registrant and the Registrant(d)
10.6       --  Form of Combination Agreement between certain of the
               Acquired Companies and the Registrant(d)
10.7       --  Employment Agreement, dated June 26, 1996, between the
               Registrant and Alan R. Sielbeck(a)
10.8       --  Employment Agreement, dated June 26, 1996, between the
               Registrant and James D. Abrams(a)
10.9       --  Employment Agreement, dated June 26, 1996, between the
               Registrant and Anthony M. Schofield(a)
10.10      --  Form of Employment Agreement between the Registrant and
               certain of its employees(a)
10.11      --  Form of Escrow Agreement between the Registrant, each of the
               stockholders of the Subsidiaries and the escrow agent(a)
10.12      --  Form of Equitable Securities Corporation Stock Purchase
               Warrant(a)
10.13      --  Loan Agreement, dated September 10, 1996, between the
               Registrant and SunTrust Bank, Nashville, N.A.(c)
21         --  List of subsidiaries of the Registrant
23.1       --  Consent of Ernst & Young LLP(c)
23.2       --  Consent of Waller Lansden Dortch & Davis, A Professional
               Limited Liability Company (included in Exhibit 5)(c)
24         --  Power of Attorney(c)

 
- ---------------
 
(a)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form S-1, Registration No. 333-07037.
(b)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form 8-A, File No. 000-21173.
(c)  Filed previously.
(d)  Incorporated by reference to the exhibits filed with the Registrant's
     Registration Statement on Form S-1, Registration No. 333-21971.