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

October 07, 2015

One of the most basic problems that we come acress at Boehmers/Cronin Emery Service Experts in Kitchener is filthy air filters. They may seem like a very tiny 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 clogged air filter can cause a number of concerns for your heating and AC system.

So what exactly happens when you don’t remember to swap out your air filter? Here are a just a handful of the side effects you could encounter:

  • Decreased airflow. This is easily the biggest issue you’ll recognize 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 prevents air from passing through the filter as it should, meaning your system is working significantly harder to provide you with 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 running overtime to give you 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 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 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 diminished equipment lifecycle
  • Lower energy efficiency
  • Decreased air quality
  • Increase in 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 avoid any likely 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 various air filters we carry, give Boehmers/Cronin Emery Service Experts a call at or schedule an appointment online.

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