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HEPA and ULPA Filtration

HEPA filters are engineered to deliver the highest level of air filtration available, making them essential for commercial and industrial applications where clean air is critical. Widely used in hospitals, clean rooms, pharmaceutical plants, and other environments requiring stringent contamination control, these filters ensure the protection of people, processes, and equipment.

A HEPA filter (High-Efficiency Particulate Air filter) must meet strict performance standards. According to the United States Department of Energy, HEPA filters are required to remove at least 99.97% of particles as small as 0.3 micrometers in diameter. This exceptional efficiency allows them to effectively capture micro-pollutants, including dirt, dust, pollen, moisture, bacteria, and even viruses.

HEPA filters are indispensable in spaces demanding superior contamination control, such as laboratories, manufacturing plants, nuclear facilities, and healthcare settings. Choose HEPA filtration for the ultimate in clean air protection and performance.

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0-007-3-19-06-SU-52-00-19P19P Agotado
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AAF Flanders Filter 0-007-C-42-03-NU-11-13-GG-FU5

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-3-19-06-SU-52-00-19P19P Agotado
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AAF Flanders Filter E21G20AB85K2F1HA0A (905-701-442)

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-3-19-06-SU-52-00-19P19P Agotado
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AAF Flanders Filter F0304293 0-007-2-03-06-SU-52-00-E1286

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-19-06-SU-52-00-19P67P Agotado
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AAF Flanders Filter F0900196 HEPA 0-007-2-19-06-SU-52-00-Z10034

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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AAF Flanders Filter F0901370 HEPA 0-007-2-19-06-SU-52-00-Z10064

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-19-06-SU-52-00-19A43A
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AAF Flanders Filter F0625758 0-007-2-19-06-SU-52-00-19A43A

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-011-H-08-00-IU-12-00-20A20AF
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AAF Flanders Filter F0621029 0-011-H-08-00-IU-12-00-20A20AF

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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905-251-044
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AAF Flanders Filter 905-251-044 24A89A2T2H2BA AST II 23-5/8x47-5/8x2-3/4

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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706-110-220
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706-110-220 DriPak 2000 MERV 12 24x24x22

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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905-701-300
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905-701-300 MegaCel II E21G20AB85K2F1SA0A 21-3/4x20

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-3-19-06-SU-52-00-19P19P
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AAF Flanders Filter F0624394 0-007-3-19-06-SU-52-00-19P19P

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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706-146-220
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706-146-220 DriPak 2000 MERV 12 20x20x22

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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706-136-220
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706-136-220 DriPak 2000 MERV 12 20x24x22

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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708-136-220
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708-136-220 DriPak 2000 MERV 14 20x24x22

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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905-000-313
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905-000-313 15A26J1T24A0 AstroCel I 24x24x11-/2

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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3018413-015-GP
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3018413-015-GP VAR VXL SH STD AF M15 24x24x12

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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905-701-302
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905-701-302 MegaCel II E21G44AB85K2F1SA0A 21-3/4x44

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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709-116-150
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709-116-150 DriPak 2000 MERV 15 24x24x15 6P

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-008-2-11-05-SU-51-XX-Z94159
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AAF Flanders Filter F0602920 HEPA 0-008-2-11-05-SU-51-XX-Z94159

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-008-3-19-06-SU-52-00-19P43P
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AAF Flanders Filter F0625989 HEPA 0-008-3-19-06-SU-52-00-19P43P

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-19-06-SU-52-00-E1386
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AAF Flanders Filter F0304094 HEPA 0-007-2-19-06-SU-52-00-E1386

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-05-00-IU-11-00-19N43N3J
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F0625698 HEPA 0-007-2-05-00-IU-11-00-19N43N3J

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-19-06-SU-52-00-19P43P 
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AAF Flanders Filter F0623563 HEPA 0-007-2-19-06-SU-52-00-19P43P 

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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0-007-2-19-06-SU-52-00-Z07159A
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AAF Flanders Filter F0626699 HEPA 0-007-2-19-06-SU-52-00-Z07159A

AAF Flanders understands the critical environments in which HEPA/ULPA filters are used. To provide the highest quality product, they factory test e...

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Your Trusted Source For HEPA and ULPA Filters

We offer a complete selection of high-performance HEPA and ULPA 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 HEPA and ULPA 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 HEPA and ULPA filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

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

Highly Rated HEPA and ULPA Filters

HEPA and ULPA Filtration from leading manufactuerers.

Have questions about HEPA and ULPA Filters?

What are HEPA and ULPA filters designed for?

HEPA and ULPA 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 HEPA and ULPA are right for my system?

The best way to determine if HEPA and ULPA 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 HEPA and ULPA filters used in residential or commercial systems?

HEPA and ULPA 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 HEPA and ULPA filters be replaced or maintained?

Replacement schedules for HEPA and ULPA 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 HEPA and ULPA?

HEPA and ULPA 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 HEPA and ULPA filters made in the USA?

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

What makes RememberTheFilter.com a trusted source for HEPA and ULPA filters?

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

What MERV Rating Is Right for You?

MERV (Minimum Efficiency Reporting Value) measures how well an air filter captures particles. A higher number means better filtration—but it must still be compatible with your HVAC system. Here's a breakdown to help you choose the right filter for your home or business.

MERV 1–4

Basic protection. Captures larger particles like dust, lint, and pollen. Minimal airflow resistance. Best for older systems or basic residential use.

✔ Highest airflow
✘ Does not trap fine particles

MERV 8

Great balance of airflow and filtration. Captures mold spores, dust mites, pet dander, and pollen. Most common choice for residential HVAC systems.

✔ Good airflow
✔ Effective for everyday air quality needs

MERV 10

Enhanced dust-holding capacity and improved particle removal compared to MERV 8. Traps finer particles like mold spores, hair spray, and fabric fibers.

✔ More efficient than MERV 8
✔ Still maintains strong airflow

MERV 11

Captures smaller particles like auto emissions, smoke, and some airborne bacteria. Ideal for homes with pets or allergy concerns. Moderate impact on airflow.

✔ Great for allergies
✘ May reduce airflow in older systems

MERV 13

Highest residential-grade filtration. Captures airborne bacteria, tobacco smoke, and fine particles. Recommended for asthma, smoke exposure, or medical-grade needs.

✔ Best indoor air quality
✘ Not suitable for all systems without airflow evaluation

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.

Why Trust RememberTheFilter.com?

With nearly 20 years online and over 50 years of combined HVAC filter experience, we’re more than just a retailer—we’re filtration experts. As a proud member of the National Air Filtration Association (NAFA), we serve residential, commercial, and government customers across the U.S. Our filters are made in America and sourced from leading manufacturers like AAF Flanders, Koch Filter, and more.

We believe in clean air, fair prices, and helping people—not algorithms.

  • ✅ Nearly 20 years online helping homeowners and businesses nationwide
  • ✅ 50+ years of combined HVAC filtration experience
  • ✅ Member of NAFA – National Air Filtration Association
  • ✅ Made in the USA – filters from AAF Flanders, Koch, and more
  • ✅ Exact Filters® – custom built to your specs, down to 1/8"
  • ✅ Trusted by schools, clinics, and commercial buildings across the U.S.

Need help?

Our customer service team is here to help you with any questions or concerns.

We're committed to providing excellent support.
+1 (866) 469-8556 support@rememberthefilter.com Text us

Phone Support Hours: Mon-Fri 8AM-5PM PDT

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