Retrotec’s Commercial DucTester and Accessories

The Retrotec 440x DucTester is the industry's first truly lightweight handheld commercial duct tester, delivering powerful performance, fast setup, and accurate results in one portable system.

The Retrotec 440x DucTester redefines commercial duct leakage testing with the industry's first truly lightweight handheld commercial duct tester. Weighing just 21 lb, it delivers up to 295 CFM at 8 in. WC with 1,700 watts of power, performance that typically requires equipment weighing well over 100 lb. Designed for portability and speed, it's easy to carry over your shoulder, allowing a single technician to complete tests that traditionally required two people. Featuring the advanced DM32X touchscreen gauge, it makes commercial duct leakage testing faster, easier, and more efficient than ever.

Equipped with the DM32X touchscreen pressure gauge, the 440x provides instant, easy-to-read results in a variety of units, including CFM/100 sq. ft. Additionally, Quick Change orifice plates allow accurate testing from 7 to 295 CFM. Automated testing and reporting simplify compliance with SMACNA, while ISO 17025-accredited calibration provides confidence in every measurement.

Building on the proven Model 400 platform, the 440x features an improved gauge mount for easy accessibility and a redesigned foot for greater stability. Whether you're a test and balance professional or sheet metal contractor, the 440x helps you complete commercial duct leakage testing faster, easier, and more accurately than ever before.

The future of airtightness testing starts here. Visit www.retrotec.com or call 1 (855) 738-7683 to learn more.


Aug 25, 2026 Products & Services Update

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