When maintaining your air conditioning unit’s filter gets dirty, it can cause quite a number of problems or inefficiencies in the performance of your system. Air filters need to be regularly replaced, and some people tend to want to do the replacements yourself. If you are one of these people, you should ensure that you take the proper steps that will guide you step by step throughout the whole process. Check them out.


We’re going to show you what steps you need to follow to make sure you get it done right. Check them out below:


  • Loosen up the fasteners that are holding the grill in place and remove the vent cover, then set it aside.
  • You should see the air filter right behind the cover, so just pull it out.
  • Take a good look at the condition of the filter and determine the extent of its service life. If it’s a greyish-brown look, that man mean it is no longer useful. If it is still whitish, you may still get some use out of it.
  • If you have to replace it, take the new filter and look for the arrow pattern in its edge. Ensure that they don’t point out, or don’t point at you, or else they will restrict the unit’s airflow. The arrows should be facing the wall.
  • Now, place the air filter back into the return duct opening and carefully place the bottom part of the filter in first, then push the top in.
  • Ensure that the arrows are pointing towards the duct, once more and give the filter a gentle pat to make sure it’s snugly fitting in the duct opening.
  • Now, put the cover back on, tighten the fasteners and you’re done.


If you are looking for an experienced and affordable heating and cooling contractor in Ottawa to handle all of your Ottawa HVAC needs, then give us a call to get professional help with your central air conditioner, furnace or fireplace for a complete home comfort experience. We have decades of experience in home heating and cooling and Capital City Heating & Cooling provides all HVAC services including heating & air conditioning installation, repair, service & maintenance in Ottawa and surrounding areas.