How to Clean a Washable Air Filter for Your AC, Furnace, or Purifier
If you’re trying to reduce waste and save money at the same time, switching to a reusable air filter is a smart move. Even Las Vegas residents, who are already used to conserving resources like water, are making this shift. A washable filter can be used again and again in your furnace, AC, humidifier, dehumidifier, or air purifier, so you don’t have to keep buying disposable ones. But here’s the catch these filters need proper cleaning to keep working efficiently. So what kind of maintenance do they actually need, and how do you clean them the right way?
Can You Clean an Air Filter?
Yes, some air filters are washable. Instead of throwing them away every three months, you can simply clean off the dust and debris and put them back into your HVAC system. It’s an easy way to save money and reduce waste. That said, not all filters are designed to be reused, so before you rinse anything under water, make sure your filter is actually washable.
How to Tell If an Air Filter Is Washable
The easiest way to check is by looking at the filter itself or its packaging, which usually mentions if it’s washable. If you’re unsure, it’s safer to replace the old filter and choose a new one that clearly states it’s reusable. Most washable filters are made from electrostatically charged woven polypropylene, which helps trap dust while still allowing airflow.
What Happens If You Wash a Non-Washable Filter?
Trying to clean a disposable air filter is a bad idea. These filters aren’t built for reuse, and washing them can damage the material. Dust and debris can get stuck deep inside, reducing efficiency and making your HVAC system work harder than it should. In some cases, the filter may not dry completely, which can lead to mold growth and even affect your indoor air quality.
How to Clean an Air Filter
Knowing how to clean a reusable air conditioner filter, air purifier filter, furnace filter, or whole-home dehumidifier filter helps keep your system running efficiently and your indoor air clean. A properly maintained filter continues to trap dust, debris, and other contaminants as air moves through your HVAC system.
To clean your filter:
- Turn off your AC, furnace, air purifier, or dehumidifier, then remove the filter carefully
- Rinse the filter with plain, warm water to remove loose dust and debris
- If you’re in a hard water area like Las Vegas, use distilled water or a water softener to avoid buildup
- Wash the filter using a mild household soap, dish soap works best, but hand soap is also fine
- Gently scrub stubborn dirt using a soft-bristled brush without damaging the filter
- Rinse again with warm water until all soap and debris are completely removed
- Shake off excess water gently
- Let the filter dry completely before placing it back into your system
- Turn your unit back on once everything is properly in place
Also Read: Air Purifier vs HVAC Filter
Are Reusable Air Filters Worth It?
Whether a reusable air filter is worth it depends on what you expect from your filter and how much maintenance you’re willing to do. Most washable furnace and AC (HVAC) filters have a MERV rating between one and four, although higher-rated reusable options are available. When properly maintained, a washable filter can perform just as well as a disposable filter with the same MERV rating. Lower MERV ratings won’t capture many particles or allergens, but higher ratings can noticeably improve indoor air quality.
That said, cleaning a reusable filter does take more effort than simply replacing a disposable one. However, constantly buying new filters every few months adds up. While a reusable air filter may cost five to six times more upfront, it can last five years or longer with proper care, which makes it more cost-effective over time. On top of that, you’re also reducing waste by keeping used filters out of landfills.
Contact the Las Vegas HVAC Experts for System Maintenance
Air filters are only one part of your HVAC system. You can boost efficiency and save on energy costs by scheduling professional maintenance twice a year. The team at Gunny’s Air Conditioning & Plumbing can handle routine tune-ups, repairs, and performance checks to keep your HVAC system running efficiently. Call us at (775)-727-6800.
