Impacts of HVAC filtration on air-conditioner energy consumption in residences

SUMMARY The use of high-efficiency filtration is a common strategy to control exposure to particulate matter in buildings. However, filters are perceived to be associated with large energy penalties. This research explores the potential energy impacts of higher efficiency filters in residential forced-air cooling systems. A literature review of the likely impacts of filters on energy use, including changes in fan power draw, air-conditioner compressor power draw, cooling capacity, and duct leakage suggests small energy consequences and potentially even energy savings. The magnitude of filter impacts is especially insignificant when compared to other common air-conditioner operation and maintenance issues.