June Home Maintenance To-Do List
By: Danny Lipford
To-Do #1: Replace Air Conditioner Filter
The filter on your central cooling system needs to be replaced every one to three months, depending on how dirty it is, so the unit will work efficiently.
Be sure to use a high quality air filter designed to remove microscopic particles, like mold and pollen, from the air. A quality filter will also help reduce the amount of dust in your home and remove some of the pollutants from the air.
The filter for most central air conditioners can be found behind the air return grate that’s usually mounted on a wall or the floor. However, on some AC systems, the filter is in the return air duct near the air handler unit.
To replace an air filter on a central AC system:
- Turn the AC off at the thermostat, and wait until it stops running.
- Remove the cover on the air return.
- Take out the old air filter.
- Write the date on the new air filter.
- Insert the new air filter with the arrows on the side of the filter pointing in the direction of the air flow. For wall and floor mounted returns, the arrow should point in toward the return duct. For filters mounted near the air handler, position the filter so the arrows point toward the air handler.
- Close the cover on the air return, and turn the AC back on.
Check out our video on Changing Air Filters to find out more.