Just because you changed the air filter on your HVAC system at the start of summer doesn’t mean that new, clean filter will get you through the entire season. You should check the filter after 30-60 days of use. There are lots of pollutants in summer air that can make your filter get dirty fast. A dirty filter can restrict airflow, causing your AC to work harder and less efficiently when it’s hot. If your AC seems to be straining to keep your home cool, call us at 610-593-5129. We’ll check your filter and replace it to keep your unit at peak working condition.