- U.S.Department of Energy – Energy Efficiency and Renewable Energy, “A Consumer’s Guide to Energy Efficiency and Renewable Energy – Space Heating and Cooling.”
“Keeping the filter clean can lower your air
conditioners energy consumption by 5 percent
to 15 percent."
- U.S. Department of Energy – Energy Efficiency and Renewable Energy, “A Consumer’s Guide to Energy Efficiency and Renewable Energy – Maintaining Your Air Conditioner.”
