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 Peachtree Service Experts Heating & Air Conditioning in Atlanta is dusty air filters. They can seem like a very small piece of the big home comfort puzzle, but the role they play in helping us create comfort is a lot greater than most homeowners realize. Regardless if it is cooling season or heating season, having a clogged air filter can cause a variety of concerns for your heating and AC system.

So what exactly happens when you neglect 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 biggest problem you’ll note when your home’s air filter is severely clogged. The longer the air filter goes without being changed, 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 a lot harder to leave you with the same amount of air.
  • Frozen coil. If your system is operating 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 possibility if your air filter goes unattended for months and months on end. In essence, you will have worked your system so hard that something gives out 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, which could end up causing damage to your system.

In addition to these, you can also expect:

  • A shorter equipment lifecycle
  • Decreased energy efficiency
  • Diminished air quality
  • More 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 get around any likely damage that might come with a filthy 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 available, give Peachtree Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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