LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS
	Know all by these presents, that the undersigned hereby constitutes and
appoints each of Paul M. Gohr, Joycelynn Watkins-Asiyanbi and Peter Johansson,
or either of them acting singly and with full power of substitution, the
undersigned's true and lawful attorney-in-fact to:
(1)	execute for and on behalf of the undersigned, in the undersigned's capacity
as a director of CECO Environmental Corp., a Delaware corporation (the
"Company"), Forms 3, 4 and 5 (and any an1endments thereto) in accordance with
Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), and the rules thereunder;
(2)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5,
complete and execute any amendments thereto, and timely file such form with the
U.S. Securities and Exchange Commission (the "SEC") and any securities exchange
or similar authority;
(3)	execute 'for and on behalf of the undersigned any and all notices pursuant
to Rule 144 under the Securities Act of 1933 with respect to sales of shares of
common stock, par value $0.01 per share, or other securities, of the Company,
including, without limitation, all notices of proposed sale on Form 144; and
(4)     take any other action in connection with the foregoing which, in the
opinion of such attorney-in-fact, may be of benefit to, in the best interest of,
or legally required by or for, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Limited Power of Attorney shall be in such form and shall
contain such information and disclosure as such attorney-in-fact may approve in
such attorney-in- fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever required,
necessary or  proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirn1ing all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this Limited Power of Attorney and the rights and powers
herein granted.
            The undersigned acknowledges that the foregoing attorneys-in-fact,
in serving in such capacity at the request and on the behalf of the undersigned,
are not assuming, nor is the Company assuming, any of the undersigned's
responsibilities to comply with, or any liability for the failure to comply
with, any provision of Section 16 of the Exchange Act.
            This Limited Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4 or 5 with respect
to the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered
to each of the foregoing attorneys-in-fact.

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   Date August 10, 2022                       /s/ Robert F. Wallman
        		                                       ______________________

                                                         Signature


         		                                    Robert F. Wallman

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