If you’re like most homeowners, you probably change your HVAC air filters without really knowing why you have to do it. The two biggest reasons are to protect your health and your family’s health, and to ensure your system works as long and efficiently as possible.

Many people suffer from allergies and asthma. Main contributors to these problems are dust, pet dander and a variety of other pollutants found in every home, regardless of how much cleaning is done. Good, properly functioning filtration systems can reduce the amount of allergens and pollutants in the air, thus reducing their ill effects.

Air filter maintenance also is important in properly maintaining your HVAC equipment. A clogged filter will force your system to work harder, increasing wear and tear on the unit. It also can cause your system to overheat or even cease to function at all. Changing filters regularly prevents this.

When comparing filters, be sure to look at their MERV (minimum efficiency reporting value) ratings. MERV ratings indicate how well a filter will trap airborne materials. Filters with a MERV rating of 1 to 4 are typically used for residential buildings, while 5 to 8 are for commercial buildings. Filters with MERV ratings of 9 to 12 are used for superior residential systems and better commercial systems, while 13 to 16 are usually used for hospitals or other medical facilities.

If you have questions about HVAC air filters and how they can contribute to your home comfort, contact the friendly experts at Wolff Mechanical.