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🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!
🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!

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Filters

Original price $ 158.99 - Original price $ 158.99
Original price
$ 158.99
$ 158.99 - $ 158.99
Current price $ 158.99

10x6x1 Exact Filters Fiberglass MERV 1-4 (12 pack)

10 x 6 x 1 basic filters in the the exact size of 10 x 6 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leading manuf...

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Original price $ 158.99 - Original price $ 158.99
Original price
$ 158.99
$ 158.99 - $ 158.99
Current price $ 158.99
Original price $ 57.99 - Original price $ 57.99
Original price
$ 57.99
$ 57.99 - $ 57.99
Current price $ 57.99

Heavy Duty Spun Glass (12 Filters) 11655.012030

This disposable heating and air conditioning filter has a one-piece chipboard frame. This feature eliminates the problems associated with a fourpie...

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Original price $ 57.99 - Original price $ 57.99
Original price
$ 57.99
$ 57.99 - $ 57.99
Current price $ 57.99
Sold out / Discontinued
Original price $ 54.99 - Original price $ 54.99
Original price
$ 54.99
$ 54.99 - $ 54.99
Current price $ 54.99

Heavy Duty Synthetic (12 Filters) 11255.011624

This filter model has been discontinued by AAF Flanders. The recommend replacement is the AAF Flanders EZ Flow filters. Low airflow restriction and...

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Original price $ 54.99 - Original price $ 54.99
Original price
$ 54.99
$ 54.99 - $ 54.99
Current price $ 54.99
Sold out / Discontinued
Original price $ 54.99 - Original price $ 54.99
Original price
$ 54.99
$ 54.99 - $ 54.99
Current price $ 54.99

Heavy Duty Synthetic (12 Filters) 11255.011010

This filter model has been discontinued by AAF Flanders. The recommend replacement is the AAF Flanders EZ Flow filters. Low airflow restriction and...

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Original price $ 54.99 - Original price $ 54.99
Original price
$ 54.99
$ 54.99 - $ 54.99
Current price $ 54.99
Sold out / Discontinued
Original price $ 0.00 - Original price $ 0.00
Original price
$ 0.00
$ 0.00 - $ 0.00
Current price $ 0.00

Discontinued - 12x30-5/8x1 EZ Flow Filters 10155.01123058 (12 Filters)

Last stock, all sales final. This filter is discontinued by the manufacturer AAF Flanders. The recommended replacement is the EZ Flow II Filters. C...

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Original price $ 0.00 - Original price $ 0.00
Original price
$ 0.00
$ 0.00 - $ 0.00
Current price $ 0.00
Sold out / Discontinued
Original price $ 134.99 - Original price $ 134.99
Original price
$ 134.99
$ 134.99 - $ 134.99
Current price $ 134.99

12x15x1 EZ Flow II Filters 10055.011215 (12 Filters)

EZ Flow HVAC Filters - Trusted Air Filtration For over 20 years, RememberTheFilter.com has proudly offered the EZ Flow II HVAC Filter, a MERV 1-4-r...

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Original price $ 134.99 - Original price $ 134.99
Original price
$ 134.99
$ 134.99 - $ 134.99
Current price $ 134.99
Original price $ 189.99 - Original price $ 189.99
Original price
$ 189.99
$ 189.99 - $ 189.99
Current price $ 189.99

20x36x1 RTF Washable Reusable Air Filter - Eco-Friendly & Durable

RTF MERV Rated Washable Filter – Elite MERV 8 Air Purification Breathe easier with the RTF Filters Co. MERV Washable Filter, crafted by a leading i...

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Original price $ 189.99 - Original price $ 189.99
Original price
$ 189.99
$ 189.99 - $ 189.99
Current price $ 189.99
Original price $ 104.99 - Original price $ 104.99
Original price
$ 104.99
$ 104.99 - $ 104.99
Current price $ 104.99

18x20x1 Koch Multi-Pleat XL8 Standard Capacity MERV 8 102-041-015 (12 Filters)

Standard Capacity Extended Surface Pleated Panel Filter Features Upgrade from standard pleated filters MERV 8 and MERV 8...

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Original price $ 104.99 - Original price $ 104.99
Original price
$ 104.99
$ 104.99 - $ 104.99
Current price $ 104.99
Original price $ 134.99 - Original price $ 134.99
Original price
$ 134.99
$ 134.99 - $ 134.99
Current price $ 134.99

20x25x3 NaturalAire Optimum Allergen MERV 11 Filters 82755.032025 (2 pack)

This filter has been discontinued by the manufacturer. Same size is available in a MERV 8 rating at the following link; Click Here Proprietary med...

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Original price $ 134.99 - Original price $ 134.99
Original price
$ 134.99
$ 134.99 - $ 134.99
Current price $ 134.99
Sold out / Discontinued
Original price $ 104.99 - Original price $ 104.99
Original price
$ 104.99
$ 104.99 - $ 104.99
Current price $ 104.99

16x25x4-1/2 NaturalAire Choice Allergen MERV 8 Filters 82655.0451625 (2 pack)

Proprietary media combined with AAF Flanders’ unique V-pleat design provides the highest performance pleat available on the market today. MERV 8 ...

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Original price $ 104.99 - Original price $ 104.99
Original price
$ 104.99
$ 104.99 - $ 104.99
Current price $ 104.99
Original price $ 325.99 - Original price $ 325.99
Original price
$ 325.99
$ 325.99 - $ 325.99
Current price $ 325.99

12-1/2x12-1/2x4 MERV 13 Extended Surface (6 Filters)

This filter is made in the exact size of 12-1/2x12-1/2x4. Many customers who purchase this filter add a 1/2" gasket on the downstream side to fit a...

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Original price $ 325.99 - Original price $ 325.99
Original price
$ 325.99
$ 325.99 - $ 325.99
Current price $ 325.99
Original price $ 89.99 - Original price $ 89.99
Original price
$ 89.99
$ 89.99 - $ 89.99
Current price $ 89.99

14X20X1 PerfectPleat High Capacity M8 173-371-011 (12 filters)

PerfectPleat HC M8 The PerfectPleat HC M8 filter is designed to consistently increase efficiency throughout the service life of the filter. The Per...

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Original price $ 89.99 - Original price $ 89.99
Original price
$ 89.99
$ 89.99 - $ 89.99
Current price $ 89.99
Original price $ 268.99 - Original price $ 268.99
Original price
$ 268.99
$ 268.99 - $ 268.99
Current price $ 268.99

16x25x4 PREpleat MERV 13 Extended Surface 90013.041625 (6 Filters)

The PREpleat M13 pleated filter has a low initial resistance and supports achievement of LEED® credits by significantly improving Indoor Air Qualit...

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Original price $ 268.99 - Original price $ 268.99
Original price
$ 268.99
$ 268.99 - $ 268.99
Current price $ 268.99
Original price $ 375.99 - Original price $ 375.99
Original price
$ 375.99
$ 375.99 - $ 375.99
Current price $ 375.99

24x24x2 PREpleat MERV 13 Extended Surface 90013.022424 (12 Filters)

The PREpleat M13 pleated filter has a low initial resistance and supports achievement of LEED® credits by significantly improving Indoor Air Qualit...

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Original price $ 375.99 - Original price $ 375.99
Original price
$ 375.99
$ 375.99 - $ 375.99
Current price $ 375.99
Original price $ 306.99 - Original price $ 306.99
Original price
$ 306.99
$ 306.99 - $ 306.99
Current price $ 306.99

16x20x2 PREpleat MERV 13 Extended Surface 90013.021620 (12 Filters)

The PREpleat M13 pleated filter has a low initial resistance and supports achievement of LEED® credits by significantly improving Indoor Air Qualit...

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Original price $ 306.99 - Original price $ 306.99
Original price
$ 306.99
$ 306.99 - $ 306.99
Current price $ 306.99
Original price $ 271.99 - Original price $ 271.99
Original price
$ 271.99
$ 271.99 - $ 271.99
Current price $ 271.99

20x25x4 PerfectPleat High Capacity MERV 8 179-411-800 (6 filters)

PerfectPleat HC M8 The PerfectPleat HC M8 filter is designed to consistently increase efficiency throughout the service life of the filter. The Per...

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Original price $ 271.99 - Original price $ 271.99
Original price
$ 271.99
$ 271.99 - $ 271.99
Current price $ 271.99
Original price $ 137.99 - Original price $ 137.99
Original price
$ 137.99
$ 137.99 - $ 137.99
Current price $ 137.99

12x20x1 NaturalAire Microparticle MERV 10 Filters 85156.011220 (12 pack)

The NaturalAire Microparticle air filter removes potentially harmful airborne particles to keep the air in your home or office clean and healthier....

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Original price $ 137.99 - Original price $ 137.99
Original price
$ 137.99
$ 137.99 - $ 137.99
Current price $ 137.99
Original price $ 176.99 - Original price $ 176.99
Original price
$ 176.99
$ 176.99 - $ 176.99
Current price $ 176.99

20x25x1 NaturalAire Healthy Ultra MERV 13 Filters 95003.012025 (12 pack)

The NaturalAire MERV 13 air filter removes potentially harmful particles to keep the air in your home or office clean and healthier. This premium r...

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Original price $ 176.99 - Original price $ 176.99
Original price
$ 176.99
$ 176.99 - $ 176.99
Current price $ 176.99
Original price $ 204.99 - Original price $ 204.99
Original price
$ 204.99
$ 204.99 - $ 204.99
Current price $ 204.99

20x24x1 NaturalAire Healthy Ultra MERV 13 Filters 95003.012024 (12 pack)

The NaturalAire MERV 13 air filter removes potentially harmful particles to keep the air in your home or office clean and healthier. This premium r...

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Original price $ 204.99 - Original price $ 204.99
Original price
$ 204.99
$ 204.99 - $ 204.99
Current price $ 204.99
Original price $ 220.99 - Original price $ 220.99
Original price
$ 220.99
$ 220.99 - $ 220.99
Current price $ 220.99

14x20x1 NaturalAire Healthy Ultra MERV 13 Filters 95003.011420 (12 pack)

The NaturalAire MERV 13 air filter removes potentially harmful particles to keep the air in your home or office clean and healthier. This premium r...

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Original price $ 220.99 - Original price $ 220.99
Original price
$ 220.99
$ 220.99 - $ 220.99
Current price $ 220.99
Original price $ 233.99 - Original price $ 233.99
Original price
$ 233.99
$ 233.99 - $ 233.99
Current price $ 233.99

12x12x1 NaturalAire Healthy Ultra MERV 13 Filters 95003.011212 (12 pack)

The NaturalAire MERV 13 air filter removes potentially harmful particles to keep the air in your home or office clean and healthier. This premium r...

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Original price $ 233.99 - Original price $ 233.99
Original price
$ 233.99
$ 233.99 - $ 233.99
Current price $ 233.99
Original price $ 151.99 - Original price $ 151.99
Original price
$ 151.99
$ 151.99 - $ 151.99
Current price $ 151.99

16x32x1 NaturalAire Standard MERV 8 Filters 84858.011632 (12 pack)

The NaturalAire Standard air filter removes dramatically more potentially harmful airborne particles, compared to basic fiberglass air filters. It ...

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Original price $ 151.99 - Original price $ 151.99
Original price
$ 151.99
$ 151.99 - $ 151.99
Current price $ 151.99
Original price $ 259.99 - Original price $ 259.99
Original price
$ 259.99
$ 259.99 - $ 259.99
Current price $ 259.99

20x21-5/8x1 Exact Filters Pleated MERV 13 (12 pack)

20x21-5/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home o...

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Original price $ 259.99 - Original price $ 259.99
Original price
$ 259.99
$ 259.99 - $ 259.99
Current price $ 259.99
Original price $ 259.99 - Original price $ 259.99
Original price
$ 259.99
$ 259.99 - $ 259.99
Current price $ 259.99

18x24x1 Exact Filters Pleated MERV 13 (12 pack)

18x24x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home or of...

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Original price $ 259.99 - Original price $ 259.99
Original price
$ 259.99
$ 259.99 - $ 259.99
Current price $ 259.99

Your Trusted Source For Filters

We offer a complete selection of high-performance HVAC filters. Whether you're replacing filters in your home, office, or commercial HVAC system, you'll find trusted options in MERV 1–13, including pleated, fiberglass, washable, and specialty filters.

All filters are made in the USA and sourced from leading manufacturers like AAF Flanders and Koch Filter. Choose from standard and custom sizes to ensure a proper fit for your system—and enjoy clean air backed by over 50 years of HVAC experience.

Filter Fit Guarantee™

Have concerns about ordering filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

We will ship your filters direct to your door, for free! All orders in the domestic U.S over $50.

Highly Rated Filters

all from leading manufactuerers.

Have questions about Filters?

What are filters designed for?

are designed to capture airborne particles and improve system performance in a wide range of HVAC and air filtration applications.

How do I know if are right for my system?

The best way to determine if are right for your system is to check your current filter specs, system requirements, or reach out to our team—we’re happy to help you choose the correct option.

Are filters used in residential or commercial systems?

can be used in a variety of applications depending on system compatibility. Some are ideal for homes, while others are built for commercial, industrial, or specialized environments.

How often should filters be replaced or maintained?

Replacement schedules for filters vary based on environment, usage, and filter type. Always follow manufacturer guidelines or consult your facility manager or HVAC technician for best results.

What efficiency levels are available in ?

filters are available in a range of filtration levels—from basic to high-efficiency—based on your air quality goals and system requirements.

Are your filters made in the USA?

Most of our replacements are proudly made in the USA by trusted manufacturers known for quality and performance.

What makes RememberTheFilter.com a trusted source for filters?

With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality replacement filter from leading brands—backed by real expertise and personalized support.

How to Measure HVAC Filters

To find the correct replacement, measure the length, width, and depth of your existing filter. Most filters are labeled with a nominal size (like 16x24x1), which is a rounded number—actual measurements are often slightly smaller. Accurate sizing ensures a proper fit and helps maintain airflow efficiency.

How to Measure HVAC Filter

Step 1: Remove Old Filter

Turn off your system and remove the existing filter. Look for printed dimensions on the frame—this is usually the nominal size.

Step 2: Measure Actual Size

Use a tape measure to get exact dimensions (length × width × depth). Round down to the nearest 1/8" if needed—example: 15-5/8" × 23-5/8" × 3/4".

Step 3: Match or Order Custom

If your measurements don’t match a standard size, we offer custom filters made to your exact dimensions.

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