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

MERV 4 Replacement HVAC, Furnace, AC and Heat Pump Filters

Why Choose MERV 4 Air Filters?

MERV 4 rated filters are a great choice if you need high airflow and reliable protection for your HVAC system. These filters are specifically designed to maintain a low initial pressure drop while offering robust construction, making them an excellent option for both residential and light industrial applications.

Benefits of MERV 4 Air Filters

  • High Airflow: MERV 4 filters ensure maximum airflow, promoting efficient system operation.
  • System Protection: These filters help protect residential and light industrial equipment from dust and debris.
  • Energy Savings: By keeping heating and cooling coils clean, MERV 4 filters help reduce energy consumption and lower energy bills.
  • Durable Construction: Typically made with spun glass material of fiberglass or synthetic fibers, and featuring a sturdy cardboard or chipboard frame.

Applications for MERV 4 Filters

MERV 4 filters are versatile and suitable for various applications, including:

  • Residential HVAC Systems: Ideal for homes, ensuring clean air and protecting HVAC components.
  • Light Industrial Equipment: Perfect for light industrial settings, providing reliable filtration and system protection.
  • Commercial Buildings: Effective in maintaining clean air and efficient HVAC operation in commercial spaces.
  • Retail Spaces: Ensuring a clean and comfortable environment for both employees and customers.

Order Your MERV 4 Filters Today

At RememberTheFilter.com, we offer a wide selection of MERV 4 air filters to meet your specific needs.

Need Assistance? We're Here to Help!

If you need help selecting the right MERV 4 filter for your system, our customer service team is ready to assist. Give us a call at 1-866-469-8556 or reach out through our contact page.

Precio original $ 59.99 - Precio original $ 149.99
Precio original
$ 59.99 - $ 149.99
$ 59.99 - $ 149.99
Precio actual $ 59.99

Filtros básicos de fibra de vidrio EZ-Flow (paquete de 12)

El marco del filtro EZ Flow II está hecho de aglomerado pesado en un diseño de una sola pieza que elimina la separación de las esquinas. El filtr...

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Precio original $ 59.99 - Precio original $ 149.99
Precio original
$ 59.99 - $ 149.99
$ 59.99 - $ 149.99
Precio actual $ 59.99
Precio original $ 114.99 - Precio original $ 124.99
Precio original
$ 114.99 - $ 124.99
$ 114.99 - $ 124.99
Precio actual $ 114.99

AAF Flanders Nested Glass EZ-Green Filters (24 Filters)

At RememberTheFilter.com, your trusted authorized dealer for top-tier air filtration solutions, we’re proud to offer the AAF Flanders Nested Glass ...

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Precio original $ 114.99 - Precio original $ 124.99
Precio original
$ 114.99 - $ 124.99
$ 114.99 - $ 124.99
Precio actual $ 114.99
Precio original $ 78.99 - Precio original $ 78.99
Precio original
$ 78.99
$ 78.99 - $ 78.99
Precio actual $ 78.99

Filtro Lavable de Fibra Natural Cortado a Medida Naturalaire 20x30x1 (paquete de 6)

Almohadilla de medios de corte a medida NaturalAire (SM1006) Almohadilla de medios de corte a medida, hasta MERV 4 Almohadilla de fibra natura...

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Precio original $ 78.99 - Precio original $ 78.99
Precio original
$ 78.99
$ 78.99 - $ 78.99
Precio actual $ 78.99
Precio original $ 58.99 - Precio original $ 101.99
Precio original
$ 58.99 - $ 101.99
$ 58.99 - $ 101.99
Precio actual $ 58.99

Medios en rollo para hamacas de vidrio hilado Precisionaire de Flanders

Los rollos de hamaca son rollos de material de 20 pies cortados en varios anchos. En la mayoría de los casos, un solo corte en el rollo producirá u...

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Precio original $ 58.99 - Precio original $ 101.99
Precio original
$ 58.99 - $ 101.99
$ 58.99 - $ 101.99
Precio actual $ 58.99
Precio original $ 71.99 - Precio original $ 333.99
Precio original $ 71.99 - Precio original $ 333.99
Precio original $ 71.99
$ 57.99 - $ 211.99
$ 57.99 - $ 211.99
Precio actual $ 57.99

MERV 1-4 Fiberglass Panel Basic Air Filters (12 Pack)

Ensure clean air with MERV 1-4 Disposable Panel Air Filters, crafted by a leading manufacturer. Perfect for commercial, industrial, and residential...

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Precio original $ 71.99 - Precio original $ 333.99
Precio original $ 71.99 - Precio original $ 333.99
Precio original $ 71.99
$ 57.99 - $ 211.99
$ 57.99 - $ 211.99
Precio actual $ 57.99
Ahorre hasta 45% Ahorre %
Precio original $ 59.99 - Precio original $ 299.99
Precio original
$ 59.99 - $ 299.99
$ 59.99 - $ 299.99
Precio actual $ 59.99

Koch Disposable Fiberglass Panel (12 Filters)

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Fiberglass Panel Filters are versatile and suitable for ...

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Precio original $ 59.99 - Precio original $ 299.99
Precio original
$ 59.99 - $ 299.99
$ 59.99 - $ 299.99
Precio actual $ 59.99
Precio original $ 69.99 - Precio original $ 309.99
Precio original
$ 69.99 - $ 309.99
$ 69.99 - $ 309.99
Precio actual $ 69.99

Koch Disposable Polyester Panel (12 Filters)

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Polyester Panel Filters are versatile and suitable for a...

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Precio original $ 69.99 - Precio original $ 309.99
Precio original
$ 69.99 - $ 309.99
$ 69.99 - $ 309.99
Precio actual $ 69.99
Precio original $ 199.99 - Precio original $ 199.99
Precio original
$ 199.99
$ 199.99 - $ 199.99
Precio actual $ 199.99

Custom Size AAF Flanders EZ-Flow Basic Fiberglass Filters (12 Pack)

Discover the custom-sized EZ Flow II Air Filter, designed for efficient and economical air filtration in residential and light commercial HVAC syst...

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Precio original $ 199.99 - Precio original $ 199.99
Precio original
$ 199.99
$ 199.99 - $ 199.99
Precio actual $ 199.99
Precio original $ 218.99 - Precio original $ 364.99
Precio original
$ 218.99 - $ 364.99
$ 218.99 - $ 364.99
Precio actual $ 218.99

Custom Size Koch Disposable Panel (12 Filters)

Disposable Panel Filters for Commercial, Industrial & Residential Use KOCH Disposable Panel Filters are versatile and suitable for a wide rang...

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Precio original $ 218.99 - Precio original $ 364.99
Precio original
$ 218.99 - $ 364.99
$ 218.99 - $ 364.99
Precio actual $ 218.99

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

MERV 4 Replacement HVAC, Furnace, AC and Heat Pump Filters 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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