    <SEC-DOCUMENT>0001104659-24-045560-index.html : 20240410
    <SEC-HEADER>0001104659-24-045560.hdr.sgml : 20240410
    <ACCEPTANCE-DATETIME>20240410072157
    ACCESSION NUMBER:		0001104659-24-045560
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20240410
    DATE AS OF CHANGE:		20240410
    EFFECTIVENESS DATE:		20240410

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CECO ENVIRONMENTAL CORP
    		CENTRAL INDEX KEY:			0000003197
    		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFYING EQUIP [3564]
    		ORGANIZATION NAME:           	06 Technology
    		IRS NUMBER:				132566064
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-07099
    		FILM NUMBER:		24834248

    	BUSINESS ADDRESS:
    		STREET 1:		14651 NORTH DALLAS PARKWAY
    		STREET 2:		SUITE 500
    		CITY:			DALLAS
    		STATE:			TX
    		ZIP:			75254
    		BUSINESS PHONE:		(513) 458-2600

    	MAIL ADDRESS:
    		STREET 1:		4625 RED BANK ROAD
    		STREET 2:		SUITE 200
    		CITY:			CINCINNATI
    		STATE:			OH
    		ZIP:			45227

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	API ENTERPRISES INC
    		DATE OF NAME CHANGE:	19920703

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ALARM PRODUCTS INTERNATIONAL INC
    		DATE OF NAME CHANGE:	19851210
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>tm243702d2_ars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: tm243702d2_ars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>