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

October 07, 2015

One of the most routine concerns that we encounter at Service Experts Heating & Air Conditioning in Columbus is dusty air filters. They can seem like a very tiny piece of the big home comfort puzzle, but the role they play in helping us control comfort is a lot bigger than most homeowners recognize. Regardless if it is cooling season or heating season, having a clogged air filter can cause a variety of issues for your heating and AC system.

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

  • Diminished airflow. This is easily the greatest headache you’ll recognize when your home’s air filter is severely clogged. The longer the air filter goes without being switched, the more dirt, dust and other particles build up. Of course, this hinders air from passing through the filter as it should, meaning your system is working significantly harder to leave you with the same amount of air.
  • Frozen coil. If your system is running harder as a result of a filthy 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 unchanged 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 may 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
  • Reduced energy efficiency
  • Lower air quality
  • More dust and debris
  • Lack of comfort

If you’re not sure when you last switched out your air filter, it may be a good time to do so in order to avert any possible damage that may 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 number of air filters available, give Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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