EX-23.1 3 dex231.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Consent of Independent Registered Public Accounting Firm

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 31, 2005, relating to the financial statements of CECO Environmental Corp., appearing in the Annual Report on Form 10-K of CECO Environmental Corp. for the year ended December 31, 2004 and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/    DELOITTE & TOUCHE LLP

Cincinnati, Ohio

December 13, 2005