When we think of air pollution, we often picture smoggy city skylines—but the air inside your home can actually be 2 to 5 times more polluted than outdoor air. Dust, pet dander, pollen, mold spores, and other allergens can build up indoors and circulate through your HVAC system, affecting your health and comfort. The good news? With simple, routine HVAC maintenance, you can dramatically improve the quality of the air you and your family breathe every day.