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17.25x35.25x1 MERV 8 Pleated Air Filter

 

Actual Size: 17.25x35.25x1"

$123.96$20.66/ea
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Standard
Standard

RESIDENTIAL AND/OR COMMERCIAL USE

Change Every 3 Months

About

  • This is a list 17.25x35.25x1 MERV 8 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
  • Actual air filter size: 17.25x35.25x1"
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) offers standard protection from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow.
  • High-quality construction means electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame to resist heat and humidity
  • Built to last 3 months. 300% longer than fiberglass models
  • 100% manufactured in the United States and designed with recyclable materials
  • Learn more about 17.25x35.25x1 Air Filters
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Top-Rated Filters. American Made. Delivered Free.

At Filterbuy, we don't cut corners—we craft high-quality air filters right here in the USA and ship them to your doorstep for free. No delays, no gimmicks—just clean air, made easy. With thousands of five-star reviews and filters built for real life & every HVAC system, it's no wonder why over 4 million families trust Filterbuy.

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Proudly Made In The USA

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All types of air filters from Filterbuy

Premium Materials That Go The Distance

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85,000+ 5-Star Reviews From Happy Customers

Stacked Filterbuy MERV-8 air filters

Save Up to 70% Per Filter with Packs

Things to Know About Filter Sizes

Finger pointing to nominal size

Nominal Size

  • The rounded size printed on your filter or HVAC unit (e.g., 17.25x35.25x1).
  • Usually whole numbers to make identifying and ordering easier.
  • A label for compatibility—not the exact measurement.
Finger pointing to actual size

Actual Size

  • The true, trimmed dimensions of the filter (e.g., 17.25x35.25x1" inches).
  • Filters are manufactured slightly smaller so they slide into the filter slot without forcing.
  • If you don't know your nominal size, measure your filter to get the actual size, then round up to find the nominal size to search on our site.
Help icon

Why the difference?

  • Nominal sizes simplify shopping and standardize categories.
  • Actual sizes ensure the filter fits properly inside your HVAC's filter rack.

How To Find Your Nominal Size When You Don't Know It

Air Filter Explaining Each Size
Nom 17.25"Act 17.25"
Nom 1"Act 1"
Nom 35.25"Act 35.25"
1

Measure length × width × depth with a tape measure to find the actual size.

2

Round up each dimension to the nearest whole number to get the nominal size. Example: 17.25x35.25x1" in → 17.25x35.25x1 nominal.

3

Search by nominal size on our site for the best fit.

Help icon
Pro tips: If your filter is missing or damaged, measure the filter slot opening the same way.

Why Getting the Right Size Matters

  • Too small? Air can bypass the filter, reducing air quality and efficiency.
  • Too big? It won't fit—risking bent frames and airflow issues.
  • Just right? You get maximum performance, better filtration, and cleaner air.
Free Exchange Policy

Free Exchange Policy

If the filter you buy doesn't fit, we'll send you a better size.

Need a Non-Standard Size?

Need a Non-Standard Size?

Build a custom filter in just a few clicks.

What's a MERV Rating?

MERV stands for Minimum Efficiency Reporting Value—but don't let the technical name fool you. It's just a way to rate how well an air filter traps stuff like dust, pollen, pet dander, and smoke. The higher the MERV number, the more particles it catches—and the cleaner your air will be.

Swipe To See More
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Bacteria
Odors
MERV 8

MERV 8

Comparable to:FPR: 4-7MPR: 600-1000



MERV 11

MERV 11

Comparable to:FPR: 6-9MPR: 1200-1550


MERV 13

MERV 13

Comparable to:FPR: 10MPR: 1900-2800

What Makes Our Filters Last 90 Days? Quality, From the Inside Out

We build every Filterbuy filter to deliver reliable 90-day performance—thanks to smart design and premium materials that do the heavy lifting. Here's what makes the difference:

Pleated Design

More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.

Electrostatically Charged Media

Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.

Synthetic Beverage Board Frame

Engineered to resist warping in extreme temperatures and high humidity.

Air Filter Wit Zoom In Key Features

Aluminum Dual Wire Backing

A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.

Made in the USA

Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.

How to Install Your Filter in 4 Simple Steps

How to install your filter - Step 1 - return-vent

Turn Off Your HVAC SystemSafety first.

How to install your filter - Step 2 - return-vent

Remove The Old FilterLook for the airflow arrow and make note of the direction.

How to install your filter - Step 3 - return-vent

Slide In Your New FilterArrow should point toward the system (same direction as before).

How to install your filter - Step 4 - return-vent

Turn Your System Back OnAnd enjoy the fresh, clean air.

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Pleated Filters vs. Fiberglass—What's the Difference?

Not all air filters are created equal. Pleated filters don't just last longer—they actually clean your air better. Here's how they stack up:

Pleated Filter

Pleated Filters

Efficiency:

High (MERV 8–13) – Traps more particles

Lifespan:

90 days – Long-lasting performance

Air Quality:

Excellent – Cleaner, healthier air

Materials:

Recyclable and durable

Fiberglass Filter

Fiberglass Filters

Efficiency:

Low (MERV 4 or less) – Misses small stuff

Lifespan:

30 days or less – Replace often

Air Quality:

Minimal – Basic protection only

Materials:

Thin, flimsy, and not recyclable

Pleated filters are a no-brainer—more protection, less hassle, and better air for your home.

How Often Should You Change Your Filter?

Changing your filter on time keeps your HVAC system running efficiently—and helps protect your lungs from dust, allergens, and airborne irritants. Here's how often to swap it out based on your needs:

Calendar Illustration Every 90 days

Every 90 Days

Standard Schedule

For most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.

Calendar Illustration Every 60 days

Every 60 Days

If You Have Pets or Allergies

Shedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.

Calendar Illustration Every 30 days

Every 30 Days

If You Have Respiratory Concerns or Live in Smog/Wildfire Zones

For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.

Help icon
Final tip:
Want to stay on track? Set a reminder—or skip the stress with auto-delivery so fresh filters show up right when you need them.

Don't Just Take Our Word For It...

Got More Questions? We've Got Answers.












Product Specifications

Nominal Size17.25 x 35.25 x 1 inches
Actual Size17.25 x 35.25 x 1" inches
Filter TypePleated
MediaElectrostatically Charged
FrameBeverage Board
MERV Ratings Available8, 11, 13
LifespanUp to 90 Days
OriginMade in USA

Protect Your Home's Air with the Best 17.25x35.25x1 MERV 8 HVAC & Furnace Air Filters

At FilterBuy, we understand that selecting the right air filter for your home isn't just about size—it's about ensuring your family breathes clean, healthy air while keeping your HVAC system running efficiently. Our 17.25x35.25x1 MERV 8 air filter is designed with that balance in mind, offering superior filtration without sacrificing airflow.

As experts in air quality and with over a decade of manufacturing experience, we've rigorously tested this filter to meet the highest standards. It effectively captures dust, pollen, pet dander, and mold spores—common pollutants that affect your home's air quality—while maintaining optimal airflow to protect your HVAC system.

From real-world testing in homes like yours, we've seen how the MERV 8 rating provides the perfect balance between powerful filtration and smooth system operation. This American-made filter is built to last, offering long-term reliability that helps you avoid costly repairs and reduce energy waste.

When you choose FilterBuy, you’re choosing more than just a filter—you’re selecting a solution backed by years of expertise and a relentless commitment to better indoor air quality. Our filters help protect your family, your home, and your HVAC system, all while keeping the air you breathe cleaner and fresher.

Top Takeaways

Understanding MERV Ratings and Why They Matter for Your Home’s Air Quality

Choosing the right air filter for your HVAC system goes beyond just finding the right size—it’s about understanding MERV ratings to ensure your family breathes cleaner, healthier air. MERV (Minimum Efficiency Reporting Value) measures a filter’s ability to capture particles of different sizes. The higher the MERV rating, the more effective the filter is at trapping smaller particles like dust, pollen, and pet dander, which are common indoor pollutants.

Here’s a quick breakdown of MERV ratings:

Selecting the right MERV rating can make a significant difference in the quality of your indoor air. Consider your home’s specific needs to choose the best filter for your family’s health.

Why MERV 8 Filters Are a Great Choice for Your Home

MERV 8 filters strike the perfect balance between filtration efficiency and airflow, making them an excellent option for many households. These filters capture a wide range of airborne particles, such as dust, pollen, mold spores, and pet dander, which significantly improves indoor air quality—especially for allergy sufferers.

In addition to cleaning your air, MERV 8 filters help maintain healthy airflow, ensuring your HVAC system runs smoothly and efficiently. By reducing strain on your system, they can extend the lifespan of your heating and cooling equipment. Regularly using MERV 8 filters also helps reduce energy consumption and save on utility bills, as your HVAC system doesn’t have to work as hard to circulate air.

How to Choose the Right Filter Size for Your HVAC System

Selecting the correct filter size for your HVAC system is essential for both optimal performance and air quality. To find the right size, start by checking your system’s specifications. Filter dimensions are typically listed in your HVAC system’s manual or on the existing filter.

Steps to Determine the Correct Filter Size:

  1. Measure Your Current Filter: Use a tape measure to check the length, width, and thickness of your current filter.

  2. Check Manufacturer Guidelines: Refer to the HVAC system’s manual for the recommended filter size.

  3. Consider Variations: Some systems may accommodate slightly different sizes. If you're unsure, consult with a professional.

Choosing the right filter size ensures your HVAC system operates at peak efficiency and helps extend its life.

Maintaining Your Air Filter for Optimal Performance

Proper filter maintenance is just as important as selecting the right size. It directly affects the efficiency of your HVAC system and air quality. Regularly check your filter every month. If it appears dirty or clogged, it’s time to replace it.

Key Maintenance Tips:

Why FilterBuy is Your Trusted Source for Air Filters

When it comes to finding high-quality, reliable air filters, FilterBuy stands out as a top choice for homeowners. Our extensive selection of filters, including the popular 17.25x35.25x1 MERV 8 filter, ensures you’ll find the right solution for your home’s needs. Our user-friendly website makes it easy to navigate and find the perfect filter for your system.

But it’s not just about great products—we’re also committed to providing exceptional customer service, fast shipping, and competitive pricing. Our customers consistently highlight the convenience and reliability of shopping with FilterBuy.

When you choose FilterBuy, you’re not just purchasing an air filter; you’re investing in cleaner air, better indoor comfort, and long-term protection for your HVAC system.

View of a 17.25x35.25x1 MERV 8 Air Filter

“At FilterBuy, we understand how the right air filter can transform both your home’s air quality and the efficiency of your HVAC system. Our 17.25x35.25x1 MERV 8 filters are more than just a solution—they’re a smart investment in your family’s health and the long-term performance of your system. By choosing high-quality filtration, you’re not only improving the air you breathe, but also reducing energy bills, cutting down on maintenance costs, and ensuring your home remains protected for years to come.”

Supporting Statistics: Why the Right Filter Matters

At FilterBuy, we understand the importance of selecting the right air filter for both your health and your HVAC system’s efficiency. Here’s why our 17.25x35.25x1 MERV 8 filter is the smart choice:

Final Thought & Opinion: Why the 17.25x35.25x1 MERV 8 Filter is a Smart Investment

At Filterbuy, we believe the 17.25x35.25x1 MERV 8 filter is an essential investment in both your home’s air quality and the long-term efficiency of your HVAC system. Here’s why:

Real-World Benefits

Long-Term Value

By choosing the 17.25x35.25x1 MERV 8 filter, you're making a smart, long-lasting investment in your home’s health, comfort, and efficiency.

Next Steps: How to Improve Your Home’s Air Quality

Taking control of your home's air quality is simple with these easy steps:

  1. Check Your Filter Size - Measure your current filter or consult your HVAC system’s manual to confirm the 17.25x35.25x1 dimensions.

  2. Order Your MERV 8 Filter - Visit FilterBuy.com to easily order your MERV 8 filter. Enjoy fast shipping and hassle-free delivery to get your new filter quickly.

  3. Install Your New Filter - Replace your old filter with the new MERV 8 filter, following your HVAC system’s installation instructions for a smooth and secure setup.

  4. Schedule Regular Maintenance - Inspect your filter every 1-3 months to ensure optimal performance. Consider stocking up on replacements to stay ahead.

  5. Enjoy Cleaner Air & Lower Bills Breathe cleaner air and enjoy a more efficient home. With your new filter, you’ll save on both energy bills and HVAC maintenance costs.

Frequently Asked Questions

1. Is MERV 8 a good AC filter?

Yes, MERV 8 is an excellent choice for most residential HVAC systems. It captures dust, pollen, and pet dander while maintaining good airflow, helping to keep your HVAC system efficient and your air clean.

2. Which MERV is best for an HVAC system?

The ideal MERV rating depends on your needs. For most homes, MERV 8-11 offers a balanced approach to filtration and airflow. If you need higher filtration, such as for allergy relief, MERV 13 is an excellent choice.

3. Which is better, MERV 8, 11, or 13?

MERV 8 is perfect for standard air quality needs. MERV 11 provides better filtration for homes with moderate air quality concerns. MERV 13 offers the highest filtration efficiency, making it ideal for homes with allergy sufferers or significant airborne pollutants.

4. How long does a MERV 8 filter last?

A MERV 8 filter typically lasts 1-3 months, depending on factors like usage, air quality, and whether you have pets or smoke in the home.

5. Can too high of a MERV rating cause problems?

Yes, very high MERV ratings (such as 16) can restrict airflow, which may put extra strain on your HVAC system, especially older models. It's best to choose a filter that balances excellent filtration with adequate airflow.

6. Are MERV 8 filters washable?

Most MERV 8 filters are disposable, though some reusable options exist. However, reusable filters typically have lower MERV ratings and may not provide the same level of filtration.

7. Is MERV 8 too restrictive for HVAC?

No, MERV 8 filters are typically not too restrictive for most residential HVAC systems. They provide a good balance of filtration and airflow, ensuring your system operates efficiently.

8. Which AC filter is best?

The best filter depends on your needs. For general use, MERV 8-11 is ideal for most homes. If you need superior filtration, particularly for allergy sufferers, MERV 13 is a great option.

9. Which is better for your HVAC system, HEPA or MERV filters?

HEPA filters offer the highest level of filtration but can restrict airflow, making them less suitable for standard HVAC systems. MERV filters, particularly those rated between MERV 8-13, provide a better balance of filtration and airflow for most residential systems.

10. Does MERV 8 filter mold?

Yes, MERV 8 filters can capture larger mold spores. However, they may not capture the smallest spores. For better mold filtration, consider a higher MERV rating (such as MERV 11 or 13).

11. Which is better, pleated or non-pleated air filters?

Pleated filters are generally more effective, as they offer a larger surface area for trapping particles and tend to have higher MERV ratings, improving filtration efficiency.

12. Can home HVAC handle MERV 13?

Yes, most modern HVAC systems can accommodate MERV 13 filters. However, it’s important to check your system’s specifications to ensure it can handle the higher filtration without strain. Always refer to your manufacturer’s recommendations to be sure.