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

October 07, 2015

One of the most common problems that we come acress at Golden Seal Service Experts Heating & Air Conditioning in Saint Charles is dirty air filters. They may seem like a very insignificant piece of the overall home comfort puzzle, but the role they play in helping us maintain comfort is a lot larger than most homeowners recognize. Regardless if it is cooling season or heating season, having a dirty air filter can cause a number of concerns for your heating and AC system.

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

  • Reduced airflow. This is easily the biggest problem you’ll note when your home’s air filter is badly clogged. The longer the air filter goes without being switched, the more dirt, dust and other particles build up. Of course, this prevents 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 operating harder as a result of a filthy air filter, you also run the danger 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 threat if your air filter goes neglected 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 can 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
  • Diminished air quality
  • More dust and debris
  • Lack of comfort

If you’re not sure when you last swapped out 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 clogged 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 Golden Seal Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

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