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Actual Size: 11.25x23.25x1"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 11.25x23.25x1"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 11.25x23.25x1"
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: 11.25x23.25x1" in → 11.25x23.25x1 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























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 | 11.25 x 23.25 x 1 inches |
| Actual Size | 11.25 x 23.25 x 1" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13 |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
Tired of air filters that don’t fit quite right or fail to deliver lasting performance? At Filterbuy.com, we’ve crafted our 11.25x23.25x1 MERV 8 HVAC and furnace air filters based on years of direct feedback from homeowners and HVAC professionals who needed a reliable solution for improving indoor air quality. Built in the USA with high-capacity pleated media, our filters are engineered to trap dust, pollen, and debris efficiently—without straining your system. This isn’t just another off-the-shelf filter; it’s the result of firsthand experience, continuous refinement, and a commitment to cleaner, healthier air in every home.
MERV 8 captures 90% of particles like dust, pollen, and dander.
Exact 11.25x23.25x1 size ensures proper fit and airflow.
Indoor air is 2–5× more polluted than outdoor air (EPA).
Made in the USA with quality materials and fast shipping.
Replace every 90 days to maintain air quality and system performance.
The 11.25x23.25x1 MERV 8 HVAC and furnace air filter from Filterbuy.com is designed to improve your home’s air quality by capturing 90% of common airborne particles—like dust, pollen, pet dander, and mold spores. Ideal for residential systems, this filter balances strong filtration with low airflow resistance, helping your HVAC system run efficiently while keeping indoor air clean. Made in the USA using high-quality, pleated synthetic media, each filter is built to last up to 3 months. Whether you’re replacing an old filter or stocking up for seasonal maintenance, Filterbuy offers fast, reliable shipping and consistent performance you can trust.

"After years of working directly with homeowners and HVAC technicians, we designed our 11.25x23.25x1 MERV 8 filters to strike the perfect balance between efficiency and airflow. Each filter reflects our commitment to clean, breathable air—built to perform, made to last."
Here’s what data—and our real-world experience—show about MERV 8 filters and indoor air quality:
EPA confirms: MERV 8 filters reduce airborne particles when HVAC fans run.
We've seen improved air quality in thousands of homes using this upgrade.
Great for capturing dust, pollen, and other common irritants.epa.gov
MERV 8 is the minimum required by EPA’s Indoor airPLUS program.
Preferred by HVAC pros for balance between airflow and filtration.
Our filters consistently meet and exceed this benchmark.nepis.epa.gov
Americans spend ~90% of time indoors.
Indoor air can be 2–5× more polluted than outside air.
A quality filter is your first line of defense.19january2021snapshot.epa.gov
Bottom line: Our MERV 8 filters aren’t just effective—they’re trusted, tested, and backed by data and experience.
Here's what we’ve learned through years of firsthand experience—and why this filter stands out:
It fits right, performs reliably.The 11.25x23.25x1 MERV 8 filter isn’t a guess—it’s built to exact specs for optimal HVAC performance.
Real results in real homes.We’ve seen reduced allergens, cleaner air, and longer system life across thousands of installs.
Built for more than just compliance.MERV 8 meets EPA standards, but we go further—delivering consistent quality and fast shipping with every order.
Why it matters:
If you want a dependable filter that protects your home without slowing down your HVAC system, this one checks every box.
✅ Trusted by professionals
✅ American-made materials
✅ Backed by real-world results
Bottom line: Cleaner air starts with the right filter—and Filterbuy delivers just that.
Follow these quick actions to get started:
1. Confirm your filter size
✔ Make sure 11.25x23.25x1 fits your system.
2. Choose your quantity
✔ Buy in bulk to save and stay prepared.
3. Order on Filterbuy
✔ Fast shipping. Made in the USA. Trusted quality.
4. Set a reminder
✔ Replace every 90 days—or more often with pets/allergies.
5. Enjoy cleaner air
✔ Breathe easier with better indoor air quality.
MERV 8 refers to the filter’s efficiency rating, which captures up to 90% of common airborne particles like dust, pollen, mold spores, and pet dander—ideal for residential HVAC systems.
It’s recommended to replace the filter every 90 days. Homes with pets, allergies, or high dust levels may benefit from more frequent replacements—every 30–60 days.
Check your current filter or system manual to confirm the 11.25x23.25x1 dimensions. This size is less common but exact-fit filters like this ensure proper airflow and efficiency.
Yes. MERV 8 filters trap common allergens such as pollen, lint, and dust mites. For severe allergies, you might consider a MERV 11 or higher—but MERV 8 is a strong starting point for most homes.
Absolutely. Filterbuy’s filters are proudly manufactured in the USA using high-quality materials, ensuring consistent performance and fast shipping.