What Happens if the Air Filter Isn’t Changed in a Furnace or Air Conditioner?
The HVAC system is one of the most expensive investments in a home, yet keeping it in top condition year after year is actually fairly simple and inexpensive. In addition to annual maintenance by a trained technician, the main way to keep your furnace and air conditioner running properly is to change the air filter every 60 to 90 days (depending on how quickly it gets dirty and clogged). This small task is often overlooked, but not doing it is the most common cause of bigger, costlier problems. Changing the air filter regularly is the best way to ensure the ideal comfort level in your home.
Here is a look at what can happen when the filter isn’t changed regularly.
Loss of efficient heating
Air filters trap the dirt, dust and other particles in the air inside your home to prevent it from getting into your heating and cooling system and being recirculated throughout your home. Eventually, the filter becomes clogged with debris and air can no longer pass through it freely. Without sufficient airflow, the equipment has to work harder to adequately heat or cool the home and keep it at a comfortable temperature. This takes more energy for the same result. You may experience this as short cycling, where the furnace turns on and off repeatedly throughout the day.
Higher energy bills
With a dirty air filter, the HVAC system works harder to maintain the proper temperature in your home. It is using more energy to achieve that level of comfort than it would have to with a clean air filter. That extra work requires more energy and that means higher energy bills.
Total loss of heating or cooling
Poor air quality
An air conditioner that runs harder because of a clogged air filter risks having the cooling coil freeze. This prevents the air conditioner from working.
Save time, money and inconvenience and keep your HVAC running efficiently by replacing the filters as needed. To make it as easy as possible, set a reminder on your phone or computer and stock up on filters for the season or year to be sure you always have a new one on hand.