Furnace filter essential for protecting against indoor pollutants


The furnace filter is your home’s most important defense against allergens, pollutants, and other debris that is given off when your heating system is in use. Replacing your air filter regularly will ensure you have clean  indoor air, and extend the life of your furnace.

Because the filter stops all the dust from escaping into your home, eventually it will become clogged. This causes the furnace to become less efficient – working harder to provide the same amount of heat. If left that way for an extended period of time, you will end up paying more money in energy bills because of how hard the system is working.

Waiting too long to change out your filter will result in your furnace needing to be replaced. However, we’re sure you want to get the most out of your furnace before having to replace it.

An air filter replacement is a fairly simple and inexpensive job that you can do yourself. By doing so, you’ll save yourself a lot of headaches because you’ll be sure your furnace will work reliably all winter long. Follow these five steps for a successful do-it-yourself replacement:

  1. Turn the thermostat off: You don’t want the furnace coming in the middle of the replacement, so shutting it off is the best way to make sure that doesn’t happen. Let others in your home know, too, that you’re working on the furnace so no one turns it back on.
  2. Locate the filter: The easiest way for you find where yours is located is to check the manufacturer’s manual that came with the unit, since every model is different. If you don’t have it anymore, remove the front air-intake grill to see if you can access the filter from there. If not, look for an access hatch on the return air duct side of the blower motor.
  3. Remove the furnace filter: As you pull it out, pay attention to the direction the arrows on the side of the filter are pointing. Throw the old filter into the trash and seal it to prevent the collected dust from getting into your home.
  4. Vacuum the filter area: This is just to get rid of any debris that may have fallen from the filter.
  5. Install the new furnace filter: Slide the new filter into position with the arrows pointing in the correct direction. Reinstall the grill or access door, turn the thermostat back on, and you’re done!


Even though the process isn’t that difficult, having a professional do it can give you a peace of mind. That’s why we’re here. Call Approved Comfort today for any furnace repair needs!