What can a dirty furnace filter cause with your heating and cooling system? The short answer to that question is that it can shut the unit down! I have seen this situation happen over and over again and if you are a frequent reader of this blog, then you know I am going to explain why it is so important to change your air filter on a regular basis.
With winter in full swing your heating system is working hard to satisfy the temperature that you have your thermostat set at. When the heater is running with a dirty filter, it can cause restriction in the system and in turn, the hot air that is being generated in the heat exchanger cannot be removed. Inside your heat exchanger there is a limit that will keep it from exceeding a certain temperature. The inside of the heat exchanger can get so hot that it could start a fire and that limit is helping prevent that.
You would not believe how many times I have run into this situation and that is why it is so important to replace your air filters on a regular basis. The less air that is restricted, the better your system will heat your home or business. How often do you change your filter?