Air Filter Basics for Your Home Comfort System

The air filter in your heating and cooling system is easy to forget, but it plays an important role. This post covers the basics.

What the filter does

The filter catches dust and debris from the air that moves through your system. A clean filter lets air flow freely. A clogged one makes the system work harder.

Signs it may need changing

• Weaker airflow from the vents
• Visible dust or discoloration on the filter
• More dust in your home than usual

What to do

Check the filter on a regular schedule and replace it when it looks dirty. The right size and type depend on your system, so check the label on your current filter or ask a technician if you are unsure.