<SEC-DOCUMENT>0000950170-25-078599-index.html : 20250529
<SEC-HEADER>0000950170-25-078599.hdr.sgml : 20250529
<ACCEPTANCE-DATETIME>20250529080231
ACCESSION NUMBER:		0000950170-25-078599
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20241231
</ITEM>
</RULE>
FILED AS OF DATE:		20250529
DATE AS OF CHANGE:		20250529

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
		EIN:				132566064
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-07099
		FILM NUMBER:		25997760

	BUSINESS ADDRESS:	
		STREET 1:		5080 SPECTRUM DRIVE
		STREET 2:		SUITE 800E
		CITY:			ADDISON
		STATE:			TX
		ZIP:			75001
		BUSINESS PHONE:		(513) 458-2600

	MAIL ADDRESS:	
		STREET 1:		5080 SPECTRUM DRIVE
		STREET 2:		SUITE 800E
		CITY:			ADDISON
		STATE:			TX
		ZIP:			75001

	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>SD
<SEQUENCE>1
<FILENAME>form_sd_-_ceco_-_2024.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: form_sd_-_ceco_-_2024.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>ceco-ex1_01.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: ceco-ex1_01.htm

</DOCUMENT>
</SEC-DOCUMENT>