April 12, 2005

via U.S. mail and facsimile

Mr. Phillip DeZwirek, Chief Executive Officer
CECO Environmental Corp.
3120 Forrer Street
Cincinnati, OH  45209

	Re:	Item 4.02 Form 8-K
	Filed:	February 8, 2005
	File No. 0-7099

Dear Mr. DeZwirek:

	We have reviewed your Item 4.02 Form 8-K for compliance with
the
form requirements and have the following comments.
1. You have disclosed that you intend to file restated financial
statements.  However, you have not indicated how or when you
intend
to do so.  Please tell us how and when you intend to file restated
financial statements.  We may have further comments after you file
the restated financial statements.
2. Please tell us if your certifying officers have reconsidered
the
effect on the adequacy of your disclosure controls and procedures
as
of the end of the period covered by your Form 10-K for the period
ended December 31, 2003 and your Forms 10-Q for the periods ended
March 31, 2004, June 30, 2004, and September 30, 2004 in light of
the
material error you have disclosed.  Additionally, tell us what
affect
the error had on your current evaluation of disclosure controls
and
procedures as of the year ended December 31, 2004.

We remind you that when you file your restated Form 10-K you
should
appropriately address the following:
* an explanatory paragraph in the reissued audit opinion,
* full compliance with APB 20, paragraphs 36 and 37,
* fully update all affected portions of the document, including
MD&A,
selected financial data, and quarterly financial data,
* updated Item 9A. disclosures should include the following:
o a discussion of the restatement and the facts and circumstances
surrounding it,
o how the restatement impacted the CEO and CFO`s original
conclusions
regarding the effectiveness of their disclosure controls and
procedures,
o changes to internal controls over financial reporting, and
o anticipated changes to disclosure controls and procedures and/or
internal controls over financial reporting to prevent future
misstatements of a similar nature.
Refer to Items 307 and 308(c) of Regulation S-K.
* include all updated certifications.


*    *    *    *


      Please respond to these comments within 5 business days, or
tell us when you will provide us with a response.  Please provide
us
with a supplemental response letter that keys your responses to
our
comments and provides any requested supplemental information.
Detailed letters greatly facilitate our review.  Please file your
supplemental response on EDGAR as a correspondence file.  Please
understand that we may have additional comments after reviewing
your
responses to our comments.

      We urge all persons who are responsible for the accuracy and
adequacy of the disclosure in the filings reviewed by the staff to
be
certain that they have provided all information investors require
for
an informed decision.  Since the company and its management are in
possession of all facts relating to a company`s disclosure, they
are
responsible for the accuracy and adequacy of the disclosures they
have made.

	In connection with responding to our comments, please
provide,
in writing, a statement from the company acknowledging that:
* the company is responsible for the adequacy and accuracy of the
disclosure in their filings;
* staff comments or changes to disclosure in response to staff
comments do not foreclose the Commission from taking any action
with
respect to the filing; and
* the company may not assert staff comments as a defense in any
proceeding initiated by the Commission or any person under the
federal securities laws of the United States.

		In addition, please be advised that the Division of
Enforcement has access to all information you provide to the staff
of
the Division of Corporation Finance in our review of your filing
or
in response to our comments on your filing.




	If you have any questions regarding these comments, please
direct them to Meagan Caldwell, Staff Accountant, at (202) 824-
5578
or, in her absence, to the undersigned at (202) 942-1774.

							Sincerely,


							Rufus Decker
							Accounting Branch Chief
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Mr. Phillip DeZwirek
April 12, 2005
Page 1 of 3



UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549-0510

         DIVISION OF
CORPORATION FINANCE