Maintaining Your Home's Heating System: How Often Should You Change Your Furnace Filter?

Your furnace filter is an essential component of your home's heating system. It helps keep the air in your home clean by trapping dirt, dust, and other airborne particles. It also helps to keep your furnace running efficiently and can even help to extend its life. But how often should you change your furnace filter?

The Benefits of Regularly Changing Your Furnace Filter

If you don't replace your furnace filter on a regular basis, it can become clogged with dirt and debris. This can lead to a number of issues, such as:

  • Reduced airflow which causes the furnace to work harder and use more energy.
  • A decrease in indoor air quality due to the buildup of dust, pollen, and other contaminants.
  • Increased wear and tear on the furnace leading to higher repair costs.
  • Reduced efficiency resulting in higher utility bills.

How Often Should You Change Your Furnace Filter?

The answer depends on several factors including the type of filter you have as well as the size of your home. Generally speaking, it is recommended that you change your furnace filter at least once every three months. If you have pets or live in a dusty area then it may be necessary for you to change it more frequently.

If you are using a disposable fiberglass filter then it is best practice to replace it every month. These filters are inexpensive and easy to install. If, however, you are using a reusable filter such as a pleated or washable electrostatic one then these should be cleaned or replaced every three months.

It is also important that you check your filter regularly for any signs of dirt or clogging before the recommended time frame has elapsed—this is especially important during peak heating season when your furnace will be running more often than usual.

Tips for Changing Your Furnace Filter

Changing out your furnace filter is an easy task that only takes a few minutes—here are some tips for making sure that everything goes smoothly:

  • Make sure that all power sources connected with the unit have been turned off prior to removing any existing filters.
  • Measure out the size of any existing filters so that when purchasing replacements they fit correctly into place.
  • Follow all manufacturer instructions when cleaning or replacing reusable filters like pleated ones or washable electrostatic ones.