Filter sizes are printed on the edge of your filter. There will be a nominal size printed in Length x Width x Thickness like this: 16” x 25” x 1”.  This is the size you will need to choose to order new filters. There will also be an actual size listed, which will look like: 15 ½ x 24 ½ x ¾. You do not need this size to order new filters.
In Canada, furnace filters are located either within the furnace housing or near the furnace in the ducting. If you need a hand finding your furnace filter please refer to the video in the “How to change your furnace filter” section of the FAQ.
Changing an air filter is a breeze. All you need to do is locate the filter slot, remove the old filter and slide the new one in its place, ensuring the directional arrow points in the direction of air flow towards your furnace. Follow this simple video to ensure a perfect filter change.
We recommend changing your filter at least every three months to ensure you receive the benefits of clean air, HVAC system protection, and lower energy bills. Changing your filter every one to two months will usually serve you better if you have family with allergies, pets in the home, or higher traffic through your home due to visitors. Regularly changing your filter protects your HVAC system, which may be the most expensive components in your home.
By changing your filters regularly, you are ensuring your HVAC system can operate at a high efficiency, using less energy to circulate air through your home. The U.S. Department of Energy has widely published the energy savings associated with regular filter changes. They have estimated that changing air filters on a regular schedule should save you 5-15% on your monthly heating and cooling costs!