The answer to 'air filter high energy bills' is that a dirty or clogged air filter can significantly increase your home's energy usage and costs. A dirty filter restricts airflow, causing your HVAC system to work harder to circulate air, which uses more energy and drives up your utility bills.
Some common signs of a dirty air filter include reduced airflow, dusty rooms, and your system cycling on and off more frequently. Replacing the filter every 1-3 months, depending on usage, can help improve efficiency and lower your energy bills. If you notice your energy costs are still high after changing the filter, it's best to call in an HVAC professional to inspect your system and identify any other potential issues.