Standard HVAC filters should be changed every three months to ensure an efficient system. Washable filters should be cleaned every three months.
Filter replacement and cleaning are HVAC maintenance tasks that you can do yourself. Here are some simple steps to make the process stress-free.
How to Replace an HVAC Filter
Before you begin, consult your HVAC owner’s manual. Each system is a little different, and your manual will include safety information as well as a part number for your replacement filter.
Follow these steps to replace an HVAC filter:
- Turn off the power to your HVAC system before replacing the filter. You can do this at your thermostat or the main power switch on or near the unit. This is an important safety step. It also prevents dust and debris from circulating when the filter is removed.
- Locate and remove your old filter. This will either be in a slot or a door on the main unit or a return air vent.
- Insert a new filter, confirming that it’s the correct size. You can compare it to the one that you just removed.
- Check the airflow arrows printed on the filter. Airflow should point towards the HVAC unit.
- Turn your system back on once you have seated the new filter. It will be good for another three months.
How to Clean a Washable HVAC Filter
Some systems (typically window-type and mini-splits) use washable filters. These are easy to identify because they’re made from a fine nylon mesh. You can confirm if you have a washable filter by consulting your owner’s manual.
Follow these steps to clean an HVAC filter:
- Turn off your system at the thermostat or at the main power switch near the unit.
- Locate the filter, usually in a tray or behind a door on an air handler or main HVAC unit. If you’re having trouble finding it, you can refer to your owner’s manual.
- Remove the filter carefully to prevent dislodging any dust and debris into the system.
- Start by vacuuming the filter at a low setting. A handheld vacuum works great, or you can use any vacuum with a crevice or brush attachment. This will remove large pieces of dust and debris.
- Some contaminants will be trapped in the filter mesh. You can run the filter under cold water and gently clean it with mild detergent and a soft brush or sponge. Clean it until the water runs clear.
- Allow the filter to air dry before putting it back into your system. Ensure the airflow arrow points towards the HVAC unit.
- Turn your system back on and enjoy three more months of clean, filtered air.
What Does an HVAC Air Filter Do?
Your HVAC air filter removes contaminants to keep the internal components of your system clean. Effective filtration reduces strain on your system and helps to keep energy consumption within the optimal range. The filter also affects overall air quality. A fresh replacement or recently cleaned filter will give you healthier air throughout your home.
The EPA’s older, but still highly relevant guide on Air Filters is a great source if you want to learn more about how they work.
Frequently Asked Questions
What Should I Do If I Can’t Locate My HVAC Filter?
Look for help in your owner’s manual, on the manufacturer’s website, or by calling the manufacturer directly. Or, if your system is under warranty from the installer, you can call and ask for assistance.
Even if your system is outside of warranty and you get stuck, you can talk to a trusted local HVAC contractor for advice.
Do I Need to Replace My Filter if I Get Regular HVAC Tune-Ups?
Yes, you need to replace your filter between HVAC Tune-ups. Most HVAC systems require professional maintenance every six months. This leaves one filter change between visits. A technician will clean or replace your filter during a tune-up. You should change your filter three months after this.
Need Help with HVAC Maintenance in Suffolk County? Call Soundview for Assistance
Soundview Heat and Air Conditioning Corp. is an HVAC contractor near you. We have proudly served Suffolk County since 2000 and are available for all your HVAC service needs.
Contact us if you need assistance with a filter replacement or if it’s time for your pre-season tune-up. We support all HVAC brands and models and are committed to delivering cost-efficient and dependable home comfort solutions.
