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🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!
🚚 Free Shipping | Top-Brands HVAC Filters | 5⭐ Trusted!
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📱 Call: 866-469-8556 | 💬 Text: 425-515-2727

Exact Filters - The Perfect Fit HVAC Filters

Discover the Perfect Fit Filter for Your Needs

Finding the perfect fit filter for your HVAC system can be a challenge, with most manufacturers offering only a few standard sizes. Our Exact Filters® are top-tier Furnace, AC, and HVAC filters, crafted with precision up to 1/8" +/- in manufacturing tolerance. They're designed to your exact specifications, ensuring no unfiltered air slips into your system.

High-Quality Filter Options

Choose from our range of filters starting with basic ones boasting a MERV 4 rating to effectively trap dust, safeguard your system, and boost your blower's airflow. For those concerned about indoor air quality, we offer pleated filter options starting from MERV 8, up to MERV 11, and our premium MERV 13 rated filters.

Benefits of Exact Filters®

  • Precision Fit: Custom-made to your exact specifications, ensuring a perfect fit and optimal performance.
  • Enhanced Air Quality: Our pleated filters with higher MERV ratings capture more airborne contaminants, improving indoor air quality.
  • System Protection: Effectively traps dust and debris, protecting your HVAC system and enhancing its longevity.
  • Improved Airflow: Basic filters with MERV 4 rating boost your blower's airflow, ensuring efficient system operation.

How to Order Your Exact Filters®

Ensure you have the precise measurements of your current filter for an accurate fit. Ordering your Exact Filters® is simple:

  • Measure Your Existing Filter: Accurately measure the dimensions of your current filter.
  • Select Your Specifications: Choose the type, size, and MERV rating that meets your needs.
  • Place Your Order: Use our easy-to-navigate website to place your order and enjoy precision-crafted filters.

Need Assistance? We're Here to Help!

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

Filters

$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x38-7/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x38-7/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 540.99 - $ 540.99
$ 540.99
$ 540.99 - $ 540.99
$ 540.99

31-1/4x6-5/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/4x6-5/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your hom...

View full details
$ 540.99 - $ 540.99
$ 540.99
$ 540.99 - $ 540.99
$ 540.99
$ 540.99 - $ 540.99
$ 540.99
$ 540.99 - $ 540.99
$ 540.99

31-1/4x6x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/4x6x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home or...

View full details
$ 540.99 - $ 540.99
$ 540.99
$ 540.99 - $ 540.99
$ 540.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-5/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-5/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x38-5/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x38-5/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-3/4x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-3/4x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x37-3/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x37-3/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x36-3/4x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36-3/4x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x36-5/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36-5/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x37-1/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x37-1/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x36-1/2x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36-1/2x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x36-3/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36-3/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-3/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-3/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-1/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-1/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x36-7/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36-7/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x38-1/4x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x38-1/4x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home o...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-1/2x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-1/2x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x38-1/2x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x38-1/2x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99

31-1/8x39-1/4x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x39-1/4x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 601.99 - $ 601.99
$ 601.99
$ 601.99 - $ 601.99
$ 601.99
$ 575.99 - $ 575.99
$ 575.99
$ 575.99 - $ 575.99
$ 575.99

31-1/8x35-3/4x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x35-3/4x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 575.99 - $ 575.99
$ 575.99
$ 575.99 - $ 575.99
$ 575.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x38-1/8x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x38-1/8x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99

31-1/8x37-1/2x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x37-1/2x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your ho...

View full details
$ 582.99 - $ 582.99
$ 582.99
$ 582.99 - $ 582.99
$ 582.99
$ 575.99 - $ 575.99
$ 575.99
$ 575.99 - $ 575.99
$ 575.99

31-1/8x36x1 Exact Filters Pleated MERV 13 (12 pack)

31-1/8x36x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home o...

View full details
$ 575.99 - $ 575.99
$ 575.99
$ 575.99 - $ 575.99
$ 575.99

Your Trusted Source For Exact Filters

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

Free Delivery

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

Highly Rated Exact Filters

Exact Filters - The Perfect Fit HVAC Filters from leading manufactuerers.

Have questions about Exact Filters?

What are Exact filters designed for?

Exact 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 Exact are right for my system?

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

Exact 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 Exact filters be replaced or maintained?

Replacement schedules for Exact 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 Exact?

Exact 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 Exact filters made in the USA?

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

What makes RememberTheFilter.com a trusted source for Exact filters?

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

Trust RememberTheFilter.com for Premium HVAC Filters & Expert Service

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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