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DOE Issues Guidance on Handling High-Static Blowers
August 18, 2015

The Department of Energy (DOE) has announced publication of long-awaited guidance on how to handle high-static blowers during enforcement testing on commercial unitary and packaged equipment, including small, large, and very large air-cooled, water-cooled, and evaporatively cooled commercial package air conditioners and heat pumps; water-source heat pumps; single package vertical units; and computer room air conditioners. The guidance was initially proposed in August 2013 by the Commercial Certification working group established under the Appliance Standards and Rulemaking Federal Advisory Committee (ASRFAC). According to the working group recommendations, DOE was to issue enforcement guidance indicating that units will be tested with a base motor, provided that all the motors used within the model grouping have at least the same relative efficiency performance as the motor included with the base unit. However, the guidance issued by DOE is not consistent with the working group’s recommendations. In response the Air Conditioning, Heating, and Refrigeration Institure (AHRI) has submitted comments requesting that DOE establish a working group to address the issues and an 18-month time period to allow the industry to comply with the requirements of the guidance.

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