0000003197 2025-03-31 2025-03-31 0000003197 false 8-K 2025-03-31 CECO ENVIRONMENTAL CORP DE 000-7099 13-2566064 5080 Spectrum Drive Suite 800E Addison TX 75001 (214) 357-6181 false false false false Common Stock, par value $0.01 per share CECO NASDAQ false