What Happens When You Don't Change Your Furnace's Air Filter

October 07, 2015

One of the most common concerns that we hear about at Stevenson Service Experts Heating & Air Conditioning in Dayton is dusty air filters. They may seem like a very insignificant piece of the whole home comfort puzzle, but the role they play in helping us control comfort is a lot larger than most homeowners recognize. Regardless if it is cooling season or heating season, having a clogged air filter can cause a host of concerns for your heating and AC system.

So what exactly happens when you don’t remember to swap out your air filter? Here are a just a handful of the side effects you could encounter:

  • Diminished airflow. This is easily the greatest problem you’ll recognize when your home’s air filter is severely clogged. The longer the air filter goes without being swapped out, the more dirt, dust and other particles build up. Of course, this inhibits air from passing through the filter as it should, meaning your system is working a lot harder to provide you with the same amount of air.
  • Frozen coil. If your system is operating harder due to a clogged air filter, you also run the risk of having the cooling coil freeze inside of the system, because it’s operating overtime to leave you with cool air.
  • Total loss of cooling or heating. This is also a possibility if your air filter goes neglected for months and months on end. In essence, you will have worked your system so hard that something breaks or wears out and needs to be replaced or serviced.
  • Short cycling. Short cycling means the heating and cooling system turns on and off more than it should. When your system short cycles, it can overheat or break down from the added work, potentially causing damage to your system.

In addition to these, you can also expect:

  • A shortened equipment lifecycle
  • Lower energy efficiency
  • Diminished air quality
  • Greater dust and debris
  • Lack of comfort

If you’re not sure when you last changed your air filter, it may be a good time to do so in order to avert any likely damage that could come with a clogged air filter. If you don’t know where your home’s air filter is located or you simply have a question about the variety of air filters we carry, give Stevenson Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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