Have you ever thought much about your HVAC air filter? If you're like most people, probably not. But that little filter works hard for you daily, quietly keeping your indoor air clean and your HVAC system running efficiently. The thing is, air filters don't last forever. After a few months of use, they get clogged up with dust, pet dander, and other pollutants they've removed from your air. A clogged filter means your HVAC has to work harder, costs more to run, and doesn't clean your air as well. The good news is that cleaning or replacing your air filter is an easy DIY task that only takes a few minutes but can make a big difference to your HVAC and indoor air quality. Here's what you need to know about why cleaning your HVAC air filter matters and how to do it.
Why You Need to Clean Your HVAC Air Filter
Cleaning your HVAC air filter regularly is one of the most important things you can do to keep your system running efficiently and ensure good indoor air quality. Here are a few reasons why:
- Dirty, clogged filters reduce airflow and make your HVAC system work harder to heat and cool your home. This lowers its efficiency, costs you more to operate, and shortens the unit's lifespan.
- Built-up dirt and debris in the filter provide breeding grounds for mold, mildew, and other allergens circulating through your home. Cleaning or replacing your filters frequently helps prevent these pollutants from accumulating, making the indoor air subpar.
- A clean filter allows only clean air to pass through to the HVAC components like the blower fan, heat exchanger, evaporator coil, and condenser coil. This prevents excess buildup of dust and keeps all parts working properly.
To clean your HVAC air filter:
- Turn off the unit and locate the filter, typically inside the air return vent.
- Gently slide out the old filter and use a vacuum with an extension hose to remove loose dust and dirt from both sides.
- For reusable filters, take the filter outside and spray both sides with a hose to remove built-up debris.
- Let it air dry completely before reinstalling.
How Often Should You Clean the Air Filter?
As a general rule of thumb, you should inspect your air filter once a month and clean or replace it every three months. However, the schedule can vary depending on factors like:
- How often do you run your HVAC system? The more you use it, the faster the air filter will get dirty.
- The quality of the air filter you have. High-efficiency filters need to be changed more often than standard filters.
- How dirty the air is in your home. If you have pets, smoke, or live in a dusty area, you must frequently clean or replace the air filter.
Some signs that it's time for a new air filter include:
- Reduced airflow from vents. If the airflow seems weaker, it could indicate a clogged filter.
- Higher energy bills. A dirty air filter makes your HVAC system work harder and less efficiently.
- Excess dust. If you notice more dust in your home, especially on vents and registers, the air filter probably isn't filtering properly.
- Noisy HVAC unit. A clogged air filter could be the culprit if the unit seems louder than usual.
Replacing or cleaning your air filter regularly is one of the easiest ways to keep your HVAC system running well and the air in your home clean. Be sure to note the size and type of your air filter before purchasing a replacement. With some simple maintenance, you'll be breathing easy again in no time!
Step-by-Step Guide to Cleaning the Air Filter
- Turn off your HVAC unit. For safety, always turn off the power to your furnace or air conditioner before cleaning or replacing the filter.
- Locate your air filter. The air filter is typically found in your furnace, air conditioner, or air return vent. Check your HVAC manual for the specific location in your system.
- Remove the old filter. Most slide out easily from the side or front of the unit. Some may be held in place with clips or screws, which you'll need to unfasten. Pull out slowly to avoid dropping any built-up dust and debris into the unit.
- Inspect and replace if necessary. If your filter looks dirty or damaged, it's best to replace it. For reusable filters, lightly vacuum or dust off excess dirt and debris. Permanent, washable filters can be rinsed with water and mild detergent. Allow to air dry completely before reinstalling.
- Install the clean filter with the airflow arrow pointing towards the unit. Slide the filter into place and secure any clips to hold it firmly in the proper position.
- Turn your HVAC unit back on. Restore power and turn on the furnace or AC to pull air through the newly cleaned filter.
- Check and change your air filter regularly. As a good rule of thumb, change standard 1-inch filters once a month or after every 300 hours of runtime. Pleated or HEPA filters can last 3-6 months. Check them periodically and replace them once they appear visibly dirty.
However, the actual schedule depends on several factors:
The frequency of your HVAC system use, the MERV rating of your filter, the level of pollutants in your area, and the type of your filter all influence how often you need to clean or replace your HVAC filter. High MERV-rated filters and areas with more airborne particles require more frequent maintenance. Permanent filters should be cleaned monthly, while disposable ones need replacement every three months.
Keep your HVAC air filter clean to improve efficiency, save money, and enjoy fresher air. It only takes a few minutes and will extend your system's life.
Directorii: HVAC Contractors Near You to Clean an Air Filter
Find a reputable HVAC contractor near you through Directorii, a reliable platform for homeowners. We list only pre-screened, vetted specialists, ensuring you receive top-notch service. Plus, we instill confidence in our users by backing every job registered on our platform with a robust $20,000 guarantee.
