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

October 07, 2015

One of the most basic problems that we encounter at Service Experts Heating & Air Conditioning in Miami is filthy air filters. They may seem like a very insignificant piece of the overall home comfort puzzle, but the role they play in helping us create comfort is a lot bigger 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 don’t remember to swap out your air filter? Here are a just a couple of the side effects you may encounter:

  • Reduced airflow. This is easily the largest headache you’ll recognize when your home’s air filter is badly clogged. The longer the air filter goes without being swapped out, 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 significantly harder to provide you with the same amount of air.
  • Frozen coil. If your system is operating harder due to a clogged air filter, you also run the danger of having the cooling coil freeze inside of the system, because it’s operating overtime to give you cool air.
  • Total loss of cooling or heating. This is also a probability 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 all the time. When your system short cycles, it can overheat or break down from the added work, potentially 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 avoid any possible damage that might 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 number of air filters we carry, give Service Experts Heating & Air Conditioning a call at or schedule an appointment online.

Contact Us