Change your air filters at least twice a year, it will increase air flow and allow your system to operate more efficiency which will reduce your energy costs.
The primary function of a furnace filter is to protect your home’s heating and cooling equipment by blocking dust, particles, and other debris from entering the furnace’s blower motor or plugging up your cooling system’s evaporator coil. It is a secondary benefit that it also cleans up the air that you breathe.
As your filter collects various pieces of dust, pet dander, pollen, etc., the filter begins to get clogged. Over time, the dirt builds up to the point where it affects the amount of air that the furnace is able to pull through the filter. In turn, this makes the blower motor work harder, increasing your electricity bill, decreasing your airflow and eventually causing your blower motor to overheat. In addition to increased energy costs, it will also take longer to heat your home.
It is recommended to change your filter every 1 to 6 months depending on the type of filter you have.
- If you have a standard 1” inch thick disposable filter it should be changed every 1-2 months, these filters plug up very quickly with dirt and debris
- If you have a 3” inch thick filter or larger it is possible to allow 6 months of usage before having to change it.
However, the frequency of changes really is very specific to each home owner. If you have pets, live near construction or run the furnace fan continuously the filter may have to be change more frequently.