The air filter in your home is essential as it does two things. It keeps particles and dirt out of your heating and cooling system and your lungs. If you don't change the air filter regularly, you risk exhausting and damaging your heating and cooling system, leading to a shorter life of the HVAC.  It can also be hazardous to the people breathing the air in your home. Allergy symptoms and asthma can be exacerbated. Changing the air filter regularly according to the manufacturer's instructions can also save you money. With your HVAC system performing more efficiently, you could see up to a 15% decrease in your costs to operate it. Finally, keeping your HVAC system running efficiently means it works smarter, not harder. This means fewer greenhouse gasses are released, making for a cleaner environment.