Changing air handler filters: all you need to know

- Disposable filters: If you’ve ever gone to a hardware store (or maybe even a grocery store) you’ve probably seen them. These are, as the name suggests, disposable. You will be able to remove them from your system and replace them with another store-bought variation.
- Permanent filters: These can also be called “washable” filters. And, like the name suggests, these filters can be removed from your equipment and machine washed. These are good if you need extra-fine air filtration power, but can be messy to clean and expensive to install.

- Know which size you have. This way you can run to the hardware store and purchase the appropriate replacement.
- Know where your filter is located in your system. This may be your last step if it is located inside your air handler or furnace cabinet. You don’t want to start taking things apart to find the filter. Filters are often located in a return duct attached to the side or top of an air handler. It can be in a return on your wall or could be in multiple places. If you can’t find it, it may be time to call a contractor.
- Remove the old filter and replace it with the new one, making sure that it is the correct way. It’s as simple as that!
- Dispose of your old filter in the proper way. Call your local recycling center and see if they accept old air filters.