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Actual Size: 23.38x23.38x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 23.38x23.38x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 23.38x23.38x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
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.

Proudly Made In The USA

Fast, Free Shipping on Every Order

Premium Materials That Go The Distance

85,000+ 5-Star Reviews From Happy Customers

Save Up to 70% Per Filter with Packs




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

Round up each dimension to the nearest whole number to get the nominal size. Example: 23.38x23.38x0.75" in → 24x24x1 nominal.

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

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

Comparable to:FPR: 4-7
MPR: 600-1000
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Comparable to:FPR: 6-9
MPR: 1200-1550
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Bacteria
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Odors
































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:
More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.
Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.
Engineered to resist warping in extreme temperatures and high humidity.

A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.
Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.

Turn Off Your HVAC SystemSafety first.

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

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

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

Efficiency:
High (MERV 8–13) – Traps more particles
Lifespan:
90 days – Long-lasting performance
Air Quality:
Excellent – Cleaner, healthier air
Materials:
Recyclable and durable

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.
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:

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

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.

For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
| Nominal Size | 24 x 24 x 1 inches |
| Actual Size | 23.38 x 23.38 x 0.75" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13, Carbon |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
At Filterbuy.com, we know from years of hands-on experience that not all air filters are created equal. That’s why our 24x24x1 MERV 13 HVAC and furnace filters are engineered to go beyond basic filtration—capturing up to 98% of airborne particles, including pollen, bacteria, smoke, and pet dander. Crafted in the USA with premium materials, these filters reflect our commitment to quality and performance. Customers consistently tell us they notice a difference in their air quality within days—because we don’t just sell filters, we help families breathe better.
MERV 13 filters capture 98% of particles like allergens and bacteria.
Made in the USA with durable, high-efficiency materials.
Supported by data from NIH, EPA, and CDC.
Customers report noticeable air quality improvements fast.
Easy online ordering with bulk options and quick delivery.
Filterbuy 24x24x1 MERV 13 HVAC and furnace Air Filters is designed with high qualitative air filtration of residential systems in mind. These filters capture 98 percent of the airborne particles like allergens, dust mites, mold spores, bacteria, smoke, and pet dander, delivering hospital grade air quality to your house. Designed in the USA, out of long lasting high capacity pleated media and moisture proof frames, each filter lasts up to 3 months defense without affecting airflow. Not only great when coping with allergies, this high efficiency filter is a smart choice in achieving cleaner air to live healthier.

"Over the years, we've tested countless filter materials and configurations, but our 24x24x1 MERV 13 filters consistently outperform—capturing the finest particles without restricting airflow. It's this balance of efficiency and durability that makes them a trusted choice for homeowners who truly care about indoor air quality."
We’ve seen how high-quality filters improve air quality in real homes. Here’s what the data—and our customers—consistently show:
90%+ of U.S. homes contain 3 or more detectable allergens.
73% have at least one allergen at elevated levels.
We hear from customers who notice fewer allergy symptoms within days of switching to MERV 13 filters. 🔗 nih.gov
The EPA lists indoor dust, mold, and pet dander as key asthma triggers.
Many homes unknowingly circulate these through their HVAC systems.
Our filters are engineered to trap these fine particles, improving breathing conditions for sensitive individuals. 🔗 epa.gov
Mold thrives in damp homes and spreads through HVAC systems.
The CDC confirms mold exposure can trigger allergies and respiratory issues.
Our customers often come to us after struggling with mold—and stay after seeing results. 🔗 cdc.gov
✅ At Filterbuy, our filters are tested and trusted by families who need real results—not just promises. These stats back what we’ve known all along: better filtration means better living.
At Filterbuy, we’ve seen what clean air can do for a home—and we believe it starts with the right filter. Here's our take based on years of first-hand experience:
Fresh air is hygienic and enhances health, comfort and peace of mind.
Majority of homes have undetectable types of pollution such as dust, allergens, spores of mold that cannot be caught by simple filters.
The MERV 13 filters we have constructed are designed to trap those bad particles.
Standard filters aren’t enough – They leave too much behind.
Customers notice the difference fast – From fewer allergy symptoms to better-smelling air.
Filtration is a smart investment – For your health, HVAC system longevity, and overall quality of life.
If you want cleaner, healthier indoor air, the 24x24x1 MERV 13 filter is a no-brainer. We’ve tested it. We’ve seen the results. And we proudly stand behind every filter we ship.
Follow these simple steps to upgrade your air quality today:
Pick Your Pack Size
Choose single or bulk packs based on your needs.
Check Filter Dimensions
Confirm that 24x24x1 fits your HVAC or furnace system.
Order Online
Visit Filterbuy.com and add MERV 13 filters to your cart.
Set a Replacement Reminder
Replace every 90 days, or sooner for homes with pets, allergies, or heavy use.
Enjoy the Difference
Breathe cleaner, healthier air—made possible by trusted USA-made filters.
✅ Click or tap here to buy now and protect your home’s air today.
MERV 13 (Minimum Efficiency Reporting Value) indicates a high-efficiency filter that captures up to 98% of airborne particles as small as 0.3 microns, including dust, pollen, mold spores, smoke, and some bacteria and viruses.
For optimal performance, replace your filter every 90 days. If you have pets, allergies, or high HVAC usage, consider replacing it every 60 days.
Yes. MERV 13 filters are safe for most residential systems, but always check your HVAC manual to ensure compatibility. They offer a balance of high filtration and airflow.
Filterbuy filters are made in the USA using high-capacity pleated media and moisture-resistant frames. They’re built for durability and proven performance, with fast shipping and bulk options available.
Absolutely. These filters are effective at capturing common allergens like pollen, pet dander, and mold spores, helping reduce symptoms for allergy and asthma sufferers.