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What does your air filter do that's so important?

Air filters clean the air pumped into your HVAC system from the outside. They remove items like pollen, dust, mold, dander, smoke and bacteria, so they don't get pumped into your home.

What’s the difference between air filters, furnace filters and AC filters?

Absolutely nothing; Air filters, furnace filters and AC filters are the exact same product and are always interchangeable. Aside from size differences, there’s nothing specific or unique about the air filter that goes in the central HVAC unit, the window AC unit, or the standalone furnace unit in your home.

Are pleated air filters better than fiberglass?

Pleated air filters are so much better than fiberglass, that they are the only type we produce and sell. Our pleated air filters last 3-6 months (depending on the size and the filtration needs of your home) and capture over 85% of air particles in your space. Fiberglass filters, made of spun glass, last an average of 30 days and capture a much smaller percentage of air particles. You may pay more up front for the pleated filter, but it will pay you back in better air quality and less waste.

What air filter size do I need?

The most important thing to do when choosing your air filter is to know the exact size you need. Look at the size on the filter in your unit - if there’s no size printed, use a tape measure to find the exact length, width, and depth. Round up the measurements to find the nominal size you need.

Learn more: How to Measure Your Air Filter

What’s the difference between nominal size and actual size?

When searching for a 16x25x1 air filter, for example, you’ll likely see 15.5" x 24.5” x .75” listed. Nearly all AC filters go by the nominal size, which is the actual size rounded up to the nearest inch.

What air filter ratings do you carry? Which one should I get?

We carry MERV ratings of 8, 11, and 13, which trap and block 85% to 98% of particles in the air. We recommend MERV 8 air filters for standard homes and businesses. MERV 11 and 13 air filters offer elevated performance and increased filtration for residents or businesses that need it.

Learn more: Air Filter MERV Ratings – Which One Is Right For You?

What quantities of air filters can I buy?

If you are buying air filters in bulk, you have come to the right place. FilterBuy lets you buy any quantity that you need. No preset packs here – you can buy exactly what you need, and nothing you don’t. As a bonus, you can subscribe to get that exact quantity of air filters delivered to your door every month and receive a 5% discount.