IAPMO Votes to Limit Flex Duct Usage in Residential Construction

August 26, 2016
2 min read

If this ruling is adopted, it will become part of the 2018 Uniform Mechanical Code and eventually inserted into the California Mechanical Code.

HVAC-R contractors have legitimate concerns around how they will be able to keep costs under control when the new regulation becomes mandatory. Phillip Grosenbach, President of the Institute of Heating & Air Conditioning Industries, Inc. (IHACI) responded to the ruling. “We are at a loss regarding IAMPO’s decision. Our organization strongly objects to the vote and urges industry leaders to voice their opposition.” His concern is that, with the California HVAC/R/SM industry already severely regulated, this new regulation will cause an even more significant cost increase to California residents. He believes the benefits of the flex duct, when installed properly, are too great to overlook and with a third party air flow test already mandated in California, those ducts not installed properly will be flagged.

The IAPMO is offering several opportunities for the public to voice their opinion on the new ruling.           On September 27, 2016, they will hold an assembly session in Albuquerque, NM and they also invite comment through January 3, 2017, at the following link:


Additionally, during the week of May 1, 2017, the Mechanical Technical Committee will meet in Anaheim, CA to allow audience members to directly address the Technical Committee in regards to the development of the 2018 Uniform Mechanical Code.

The HVAC/R industry is constantly changing and evolving and, therefore, so are the rules and regulations. FIELDBOSS® Contractor Management Software tackles business challenges to help your company adapt more easily to any new regulations. Contact FIELDBOSS for more information.

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