How Much Is a Dirty Air Filter Really Costing You Each Month?

Homeowner sliding a clean pleated HVAC air filter into a return-air vent in a bright Florida home

A dirty air filter can raise your electric bill by restricting airflow, which forces your air conditioner or furnace to run longer to reach the same temperature. The U.S. Department of Energy puts the wasted energy at 5% to 15%. For most homes that is roughly $3 to $10 a month, or $40 to $120 … Read more