SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

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                        Date of Report: December 11, 2001


                             CELERITY SYSTEMS, INC.
                             ----------------------
               (Exact Name of Registrant as Specified in Charter)




                                                                               
         DELAWARE                                    000-23279                              52-2050585
         --------
(State or other jurisdiction                        (Commission                            (IRS Employer
          of incorporation)                         File Number)                         Identification No.)




122 Perimeter Park Drive
Knoxville, Tennessee 37922
(Address of principal executive offices)


Registrant's telephone number, including area code:  (865) 539-5300





ITEM 4.  CHANGES IN REGISTRANT'S CERTIFYING ACCOUNTANT.

         (a)(1)  (i)   On   December  11,  2001,  Celerity  Systems,  Inc.  (the
"COMPANY")  dismissed  PricewaterhouseCoopers  LLP ("PRICEWATERHOUSECOOPERS") as
its independent certified public accountant.

                 (ii) PricewaterhouseCoopers' reports on the Company's financial
statements for each of the years ended December 31, 1999 and 2000, respectively,
did not  contain an adverse  opinion or a  disclaimer  of  opinion,  and was not
qualified or modified as to uncertainty,  audit scope, or accounting principles,
except that the reports  from  PricewaterhouseCoopers  for each of the two years
ended  December 31, 1999 and 2000,  respectively,  expressed  substantial  doubt
about the Company's ability to continue as a going concern.

                 (iii) PricewaterhouseCoopers'  dismissal  was  recommended  and
approved by the Company's Audit Committee and Board of Directors.

                 (iv) For each of the two years  ended as of  December  31, 1999
and 2000,  and through  December 11, 2001,  there were no  disagreements  on any
matter of accounting principles or practices, financial statement disclosure, or
auditing  scope or  procedures,  which  disagreements  if not  resolved to their
satisfaction  would have caused them to make reference in connection  with their
opinion to the subject matter of the disagreement.

                 (v) For each of the two years ended as of December 31, 1999 and
2000, and through December 11, 2001,  PricewaterhouseCoopers  did not advise the
Company of any of the matters identified in paragraph  (a)(1)(iv)(B) of Item 304
of Regulation S-B.

         (a)(2) On December 11, 2001, the Company  engaged HJ & Associates,  LLC
as its principal  accountant to audit the Company's  financial  statements.  The
Company  did not  consult  HJ &  Associates,  LLC on any  matters  described  in
paragraph  (a)(2)(i) or (ii) of Item 304 of Regulation S-B since January 1, 2000
or any subsequent interim period prior to engaging HJ & Associates, LLC.

         (a)(3) The Company has  requested  PricewaterhouseCoopers  to furnish a
letter  addressed to the SEC, stating whether it agrees with the statements made
by the Company and, if not,  stating the respects in which it does not agree.  A
copy of such letter dated as of December 18, 2001 is filed as Exhibit 16 to this
Form 8-K.

ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

     (a) and (b.) none.

     (c) Exhibits

         Exhibit No.               Description
         -----------               -----------
             16                    Letter re: change in certifying accountant




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                                   SIGNATURES



         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                   CELERITY SYSTEMS, INC.



Date: December 14, 2001           By: /s/ KENNETH D. VAN METER
                                      ------------------------------------------
                                      Name: Kenneth D. Van Meter
                                      Its: President and Chief Executive Officer