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

October 07, 2015

One of the most common concerns that we come acress at Service Experts Heating & Air Conditioning in Naples is filthy air filters. They might seem like a very insignificant piece of the big home comfort puzzle, but the role they play in helping us create comfort is a lot bigger than most homeowners realize. Regardless if it is cooling season or heating season, having a filthy air filter can cause a variety of problems for your heating and AC system.

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

  • Decreased airflow. This is easily the largest issue you’ll recognize when your home’s air filter is very clogged. The longer the air filter goes without being swapped out, 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 give you the same amount of air.
  • Frozen coil. If your system is running 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 threat 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, possibly causing damage to your system.

In addition to these, you can also expect:

  • A diminished equipment lifecycle
  • Lower energy efficiency
  • Lower 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 avert any likely damage that might 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 we carry, give Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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