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🚚 Free Shipping | Top-Tier HVAC Filters | 5⭐ Trusted!
🚚 Free Shipping | Top-Tier HVAC Filters | 5⭐ Trusted!
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12x24x4 HVAC, Furnace and AC Replacement Air Filters

Maintain optimal air quality with our top-quality 12x24x4 HVAC furnace and AC filters. Perfect for various applications, these filters from leading brands ensure your HVAC system operates at peak performance. Experience the benefits of our 12x24x4 filters for premium filtration.

Filtros

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$ 188.99 - $ 188.99
$ 188.99
$ 188.99 - $ 188.99
$ 188.99

12x24x4 PREpleat LPD MERV 8 Filtros de Capacidad Estándar 80055.041224 (6 Filtros)

El filtro AAF Flanders PREpleat LPD (baja caída de presión) SC (capacidad estándar) es el filtro plisado MERV 8 de capacidad estándar de resistenc...

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$ 188.99 - $ 188.99
$ 188.99
$ 188.99 - $ 188.99
$ 188.99
Agotado
$ 261.99 - $ 261.99
$ 261.99
$ 261.99 - $ 261.99
$ 261.99

Filtros PrecisionCell II 12x24x4 89655.041224 (3 filtros)

Los filtros rígidos miniplisados ​​de superficie extendida PrecisionCell II están diseñados para su uso en la mayoría de los sistemas HVAC comerci...

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$ 261.99 - $ 261.99
$ 261.99
$ 261.99 - $ 261.99
$ 261.99
Agotado
Agotado
$ 298.99 - $ 298.99
$ 298.99
$ 298.99 - $ 298.99
$ 298.99

Carbón Activado PrePleat (6 Filtros) 81255.041224

Este filtro combina la baja resistencia y la alta capacidad de retención de polvo de un filtro plisado con la capacidad de eliminación de olores de...

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$ 298.99 - $ 298.99
$ 298.99
$ 298.99 - $ 298.99
$ 298.99
Agotado
$ 259.99 - $ 259.99
$ 259.99
$ 259.99 - $ 259.99
$ 259.99

12x24x4 PREpleat MERV 13 Extended Surface 90013.041224 (6 Filters)

This warehouse deal is a closeout sale with possible minor damage or imperfections on the filters and/or box. Each filter has been carefully inspec...

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$ 259.99 - $ 259.99
$ 259.99
$ 259.99 - $ 259.99
$ 259.99
$ 209.99 - $ 209.99
$ 209.99
$ 209.99 - $ 209.99
$ 209.99

12x24x4 PREpleat LPD MERV 8 Alta Capacidad 80255.041224 (6 Filtros)

Los filtros de aire de alta capacidad AAF Flanders PREpleat LPD (baja caída de presión) están diseñados para retener polvo, baja caída de presión ...

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$ 209.99 - $ 209.99
$ 209.99
$ 209.99 - $ 209.99
$ 209.99
12x24x4 PREpleat LPD MERV 8 High Capacity 80255.041224 (6 Filters)
Agotado
$ 129.99
$ 129.99 - $ 129.99
$ 129.99
$ 98.88
$ 98.88 - $ 98.88
$ 98.88

WAREHOUSE DEAL 12x24x4 PREpleat LPD MERV 8 High Capacity 80255.041224 (6 Filters)

This warehouse deal is a closeout sale with possible minor damage or imperfections on the filters and/or box. Each filter has been carefully inspec...

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$ 129.99
$ 129.99 - $ 129.99
$ 129.99
$ 98.88
$ 98.88 - $ 98.88
$ 98.88
Agotado
Agotado
$ 236.99 - $ 236.99
$ 236.99
$ 236.99 - $ 236.99
$ 236.99

Pre Plisado 62R MERV 11 (6 Filtros) 85755.041224M11

El filtro de panel plisado MERV 11 preplisado de alta capacidad 62RM11 permite una mejora significativa en la eficiencia de recolección con respec...

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$ 236.99 - $ 236.99
$ 236.99
$ 236.99 - $ 236.99
$ 236.99
Agotado
$ 179.99 - $ 179.99
$ 179.99
$ 179.99 - $ 179.99
$ 179.99

12X24X4 PrecisionCell III MERV 14 89855.041224 (1 Filter)

Special Order. Contact customer support for product details if unsure of your part number. The PrecisionCell III is a lightweight and low-resistanc...

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$ 179.99 - $ 179.99
$ 179.99
$ 179.99 - $ 179.99
$ 179.99
12x24x4 PREpleat LPD SC M8 Filters 80055.041224 (6 Filters)
Agotado
$ 108.99
$ 108.99 - $ 108.99
$ 108.99
$ 76.40
$ 76.40 - $ 76.40
$ 76.40

WAREHOUSE DEAL 12x24x4 PREpleat LPD MERV 8 Standard Capacity Filters 80055.041224 (6 Filters)

This warehouse deal is a closeout sale with possible minor damage or imperfections on the filters and/or box. Each filter has been carefully inspec...

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$ 108.99
$ 108.99 - $ 108.99
$ 108.99
$ 76.40
$ 76.40 - $ 76.40
$ 76.40
Agotado
$ 220.99 - $ 220.99
$ 220.99
$ 220.99 - $ 220.99
$ 220.99

12x24x4 PerfectPleat Standard Capacity MERV 8 179-480-319 (6 filters)

PerfectPleat Standard Capacity MERV 8 PerfectPleat SC M8 filters are designed to consistently increase efficiency throughout the service life of th...

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$ 220.99 - $ 220.99
$ 220.99
$ 220.99 - $ 220.99
$ 220.99
12x24x2 PerfectPleat HC M8 Filter
$ 243.99 - $ 243.99
$ 243.99
$ 243.99 - $ 243.99
$ 243.99

12x24x4 PerfectPleat High Capacity MERV 8 179-411-319 (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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$ 243.99 - $ 243.99
$ 243.99
$ 243.99 - $ 243.99
$ 243.99
PerfectPleat Ultra Filter
$ 212.99 - $ 212.99
$ 212.99
$ 212.99 - $ 212.99
$ 212.99

12x24x4 PerfectPleat Ultra 179-402-319 (6 filters)

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

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$ 212.99 - $ 212.99
$ 212.99
$ 212.99 - $ 212.99
$ 212.99
$ 429.86 - $ 429.86
$ 429.86
$ 429.86 - $ 429.86
$ 429.86

12x24x4 VariCel 2+ High Capacity Single Header MERV 15 3184627-901 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

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$ 429.86 - $ 429.86
$ 429.86
$ 429.86 - $ 429.86
$ 429.86
$ 422.04 - $ 422.04
$ 422.04
$ 422.04 - $ 422.04
$ 422.04

12x24x4 VariCel 2+ High Capacity Single Header MERV 14 3184627-801 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 422.04 - $ 422.04
$ 422.04
$ 422.04 - $ 422.04
$ 422.04
$ 422.04 - $ 422.04
$ 422.04
$ 422.04 - $ 422.04
$ 422.04

12x24x4 VariCel 2+ High Capacity Single Header MERV 11 3184627-601 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 422.04 - $ 422.04
$ 422.04
$ 422.04 - $ 422.04
$ 422.04
$ 428.55 - $ 428.55
$ 428.55
$ 428.55 - $ 428.55
$ 428.55

12x24x4 VariCel 2+ High Capacity No Header MERV 15 3184626-901 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 428.55 - $ 428.55
$ 428.55
$ 428.55 - $ 428.55
$ 428.55
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56

12x24x4 VariCel 2+ High Capacity No Header MERV 14 3184626-801 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56

12x24x4 VariCel 2+ High Capacity No Header MERV 11 3184626-601 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56

12x24x4 VariCel 2+ High Capacity No Header MERV 11 3184626-601 (4 Filters)

VariCel 2+ High Capacity Filters The VariCel 2+ HC filter is engineered for superior performance, utilizing AAF's exclusive Impress Technology to ...

Ver todos los detalles
$ 420.56 - $ 420.56
$ 420.56
$ 420.56 - $ 420.56
$ 420.56
$ 405.96 - $ 405.96
$ 405.96
$ 405.96 - $ 405.96
$ 405.96

12x24x4 Koch Multi-Pleat Boss Heavy Duty High Capacity MERV 13 102-714-123 (6 Filters)

Multi-Pleat BOSS Heavy Duty Premium High-Capacity, High Strength Pleated Filter Premium heavy duty construction Heavy gage expanded metal backin...

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$ 405.96 - $ 405.96
$ 405.96
$ 405.96 - $ 405.96
$ 405.96
$ 254.99 - $ 254.99
$ 254.99
$ 254.99 - $ 254.99
$ 254.99

12x24x4 Koch Multi-Pleat Boss Heavy Duty High Capacity MERV 11 102-500-123 (6 Filters)

Multi-Pleat BOSS Heavy Duty Premium High-Capacity, High Strength Pleated Filter Premium heavy duty construction Heavy gage expanded metal backin...

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$ 254.99 - $ 254.99
$ 254.99
$ 254.99 - $ 254.99
$ 254.99
$ 241.99 - $ 241.99
$ 241.99
$ 241.99 - $ 241.99
$ 241.99

12x24x4 Koch Multi-Pleat Boss Heavy Duty High Capacity MERV 9 102-701-123 (6 Filters)

Multi-Pleat BOSS Heavy Duty Premium High-Capacity, High Strength Pleated Filter Premium heavy duty construction Heavy gage expanded metal backin...

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$ 241.99 - $ 241.99
$ 241.99
$ 241.99 - $ 241.99
$ 241.99
$ 328.44 - $ 328.44
$ 328.44
$ 328.44 - $ 328.44
$ 328.44

12x24x4 Koch Multi-Pleat Green13 MERV 13 High Capacity 102-714-023 (6 Filters)

Multi-Pleat GREEN 13 MERV 13 performance rating in accordance with ASHRAE Test Standard 52.2-2012 Earns LEED points Reduces energy cost Extended...

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$ 328.44 - $ 328.44
$ 328.44
$ 328.44 - $ 328.44
$ 328.44
$ 230.99 - $ 230.99
$ 230.99
$ 230.99 - $ 230.99
$ 230.99

12x24x4 Koch Multi-Pleat XL11 MERV 11 High Capacity 102-500-023 (6 Filters)

Multi-Pleat XL11-HC Upgrade from standard pleated filter MERV 11 efficiency Low pressure drop High dust holding capacity Superior Efficiency Th...

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$ 230.99 - $ 230.99
$ 230.99
$ 230.99 - $ 230.99
$ 230.99

Your Trusted Source For 12x24x4 Filters

We offer a complete selection of high-performance 12x24x4 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 12x24x4 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 12x24x4 filters online? Your purchase is backed by our Filter Fit Guarantee™.

Free Delivery

We will ship your 12x24x4 filters direct to your door, for free! All orders in the domestic U.S over $50.

Highly Rated 12x24x4 Filters

12x24x4 HVAC, Furnace and AC Replacement Air Filters from leading manufactuerers.

Have questions about 12x24x4 Filters?

What are 12x24x4 filters designed for?

12x24x4 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 12x24x4 are right for my system?

The best way to determine if 12x24x4 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 12x24x4 filters used in residential or commercial systems?

12x24x4 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 12x24x4 filters be replaced or maintained?

Replacement schedules for 12x24x4 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 12x24x4?

12x24x4 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 12x24x4 filters made in the USA?

Most of our 12x24x4 replacements are proudly made in the USA by trusted manufacturers known for quality and performance.

What makes RememberTheFilter.com a trusted source for 12x24x4 filters?

With nearly 20 years online and over 50 years of HVAC experience, we offer only high-quality 12x24x4 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.

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