How do you change an air filter step by step?
Changing your air filter is an essential maintenance task that helps keep your HVAC system running efficiently and improves indoor air quality. Here's a step-by-step guide on how to change your air filter.
Locate the Air Filter
The first step is to locate the air filter in your HVAC system. It is typically located in the return air duct, the air handler unit, or the furnace. Consult your owner's manual or look for the filter access panel, which is usually marked with an arrow indicating the direction of airflow.
Turn Off the Power
Before you begin, make sure to turn off the power to your HVAC system. This can be done by locating the circuit breaker that controls the unit and switching it to the off position.
Remove the Old Filter
Once you've located the air filter, gently pull it out of the filter housing. Make note of the size and orientation of the old filter, as you'll need to replace it with a new one of the same size and type.
Install the New Filter
- Carefully insert the new air filter into the filter housing, making sure it is oriented correctly. The arrow on the filter should point in the direction of airflow.
- Ensure the filter fits snugly and that there are no gaps around the edges, as this can allow unfiltered air to pass through.
After installing the new filter, turn the power back on to your HVAC system and check that it's running properly.
Dispose of the Old Filter
Properly dispose of the old air filter, as it may contain dust, dirt, and other contaminants. Check with your local waste management authority for the best way to dispose of it.
Changing your air filter regularly, typically every 1-3 months, is an important part of maintaining your HVAC system and ensuring good indoor air quality. By following these steps, you can easily keep your system running at its best.
Which way do arrows go on an air filter?
Make the arrows face the ceiling or wall. If your filter is on the ceiling, the arrow should face the ceiling. If your filter is on the wall, the arrow should face the wall.
Do you need to turn off AC before changing filter?
Yes, you absolutely need to turn off your AC before changing the filter to prevent electric shock and damage to the system. Turning off the power will also prevent dust and debris from being sucked into the unit while the filter is out.
This video demonstrates how to turn off the power to your AC unit and replace the filter: 56sCreativeProcessDIYYouTube · Apr 25, 2025
Why you should turn off the power
- Safety: This prevents the risk of electric shock while you are working on the unit.
- Equipment protection: It stops the system from pulling more dust and debris into the air handler, which can damage the equipment.
- Proper installation: It makes it easier to remove the old filter and insert the new one without the airflow interfering.
How to turn off the power
- Locate the switch: Some HVAC systems have a built-in switch near the unit that you can flip to the "off" position.
- Go to the breaker box: If there is no switch, go to your home's electrical panel and turn off the breaker that powers the AC system.
- Turn the unit back on: After you have securely installed the new filter, turn the power back on at the breaker or the switch so the system can run again.
What are the steps to changing the air filter?
Now we just lift off the cover. And there's our filter. Now let's go ahead and remove. It. And you can see it's a little bit dirty.
How to reset air filter after changing filter?
And we checked everywhere. All the other displays showed a different method. This is on the inside part of the freezer. Door.
