Residential Duct Air Flow Measurement: Assessing the impact of air flow on ASHP sizing
Duct capacity is often a limiting factor in sizing retrofit heat pumps, and contractors often size heat pumps based on the existing air conditioner, resulting in under-sized equipment. A simple 15-minute test can provide definitive air flow capacity of a duct system, contributing to a proper sized heat pump and avoiding poor system performance—such as noise problems due to restrictive ductwork. Energy Advisors (EA) can easily add this procedure to the scope of an Energy Evaluation.