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

October 07, 2015

One of the most common problems that we encounter at McElroy Service Experts Heating & Air Conditioning in Grand Island is dusty air filters. They may seem like a very small piece of the big home comfort puzzle, but the role they play in helping us maintain comfort is a lot greater than most homeowners notice. Regardless if it is cooling season or heating season, having a dirty air filter can cause a host of concerns for your heating and AC system.

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

  • Reduced airflow. This is easily the biggest headache you’ll note 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 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 working harder due to a clogged air filter, you also run the chance of having the cooling coil freeze inside of the system, because it’s running overtime to give you 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 more than it should. When your system short cycles, it can overheat or break down from the added work, possibly causing damage to your system.

In addition to these, you can also expect:

  • A shorter equipment lifecycle
  • Decreased 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 get around 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 various air filters we have, give McElroy Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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