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

October 07, 2015

One of the most common issues that we encounter at Komfort Air in Mint Hill is dusty air filters. They can seem like a very insignificant piece of the whole home comfort puzzle, but the role they play in helping us create 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 variety of concerns for your heating and AC system.

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

  • Decreased airflow. This is easily the largest problem you’ll recognize when your home’s air filter is badly 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 quite a bit harder to provide you with the same amount of air.
  • Frozen coil. If your system is working harder as a result of a filthy 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 threat 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 excessively. When your system short cycles, it may 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
  • Decreased 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 avert any possible damage that may 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 we carry, give Komfort Air a call at or schedule an appointment online.

Contact Us