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

October 07, 2015

One of the most common issues that we hear about at Service Experts Heating & Air Conditioning in Ocala is dusty air filters. They may seem like a very small piece of the overall home comfort puzzle, but the role they play in helping us control comfort is a lot larger than most homeowners realize. Regardless if it is cooling season or heating season, having a dirty air filter can cause a variety of problems for your heating and AC system.

So what exactly happens when you forget to change your air filter? Here are a just a handful of the side effects you may encounter:

  • Diminished airflow. This is easily the largest headache you’ll note when your home’s air filter is very clogged. The longer the air filter goes without being switched, 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 quite a bit harder to give you the same amount of air.
  • Frozen coil. If your system is working harder because of a dirty air filter, you also run the chance of having the cooling coil freeze inside of the system, because it’s operating overtime to provide you with cool air.
  • Total loss of cooling or heating. This is also a probability 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 excessively. When your system short cycles, it could overheat or break down from the added work, possibly causing damage to your system.

In addition to these, you can also expect:

  • A shortened equipment lifecycle
  • Lower energy efficiency
  • Lower air quality
  • Increase in 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 avoid any possible damage that could come with a dirty 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 Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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