One of the quickest the efficiency of your HVAC system is by regularly maintaining the air filters and ensuring they aren’t clogged with dirt and debris. What’s more, doing so is a really easy and won’t take you more than ten minutes. The most time-consuming part of changing your home air filter is determining the type of filter you need and the size – once you know these details, have your air conditioner back up and running in moments.
Turn Off the Furnace
To make sure that the unit doesn’t turn on when you’re changing the filter, switch the thermostat to the off position. This will ensure that a loose filter doesn’t get trapped in the air duct or that loose debris doesn’t damage the system. If you want to be extra safe, you can disconnect the power to the system while you make the changes to the filter.
Locate the Filter
The next task is to locate where the filter is in your air conditioning unit. You can refer to the manual if you have it to hand which will also tell you the size and type of filter you need. But if you don’t, you can check in either the blower compartment behind the furnace cover or the metal ductwork by the blower fan which is where most filters are located. Some filters can be rinsed and replaced, but if you have fibreglass filters, you will need to replace it with a new filter as they cannot be reused.
Check the Size
Checking the size of the filter is an important step to ensuring that the unit works efficiently. The manual to your furnace should provide you with the dimensions, looking something like “ ”, you need but if it doesn’t, you can partially remove the existing filter to check the cardboard filter frame which often has the size listed or measure the filter for the height, width and thickness.
Remove the Old Filter
Once you’ve purchased the new filter, you can take out the old one. Note the arrow on the frame as this will show you the correct direction of air flow. The new filter will need to be replaced in the same direction and should be pointed towards your furnace fan unit. You may even want to draw the arrow onto the housing of the furnace in permanent marker so you can easily replace the filters in the future.
Insert the New Filter
Insert the new filter, checking once more that the arrow showing the airflow direction is correct. Home air filters are designed to filter the air from a single direction, so that as they build up with dirt and debris, they won’t collapse, so it’s key that the new filter is put in correctly. Check that the thermostat is back on and you are ready to use your air conditioning unit once again.