11.25x23.25x1 MERV 8 Pleated Air Filter
Actual Size: 11.25x23.25x0.75
Free Delivery 
Factory-Direct Low Prices, Made in the USA
Hassle-Free Returns & Free Exchanges
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
11.25x23.25x1 MERV 8 Pleated Air Filter
Actual Size: 11.25x23.25x0.75
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
11.25x23.25x1 MERV 8 Pleated Air Filter
Actual Size: 11.25x23.25x0.75
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
About
- This is a list 11.25x23.25x1 MERV 8 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
- Actual air filter size: 11.25x23.25x0.75
- 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 11.25x23.25x1 Air Filters
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.
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
Things to Know About Filter Sizes
Nominal Size
- The rounded size printed on your filter or HVAC unit (e.g., 11.25x23.25x1).
- Usually whole numbers to make identifying and ordering easier.
- A label for compatibility—not the exact measurement.
Actual Size
- The true, trimmed dimensions of the filter (e.g., 11.25x23.25x0.75 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.
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
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: 11.25x23.25x0.75 in → 11.25x23.25x1 nominal.
Search by nominal size on our site for the best fit.
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
If the filter you buy doesn't fit, we'll send you a better size.
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.
Merv 8
Comparable to:FPR: 4-7
MPR: 600-1000
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Merv 11
Comparable to:FPR: 6-9
MPR: 1200-1550
Dust & DebrisDust Mites & ParticlesPollenMoldLintDander
Smoke & Smog
Merv 13
Comparable to:FPR: 10
MPR: 1900-2800
Dust & DebrisDust Mites & ParticlesPollenMoldLintDanderSmoke & Smog
Bacteria
MERV 8
Comparable to:FPR: 4-7MPR: 600-1000
MERV 11
Comparable to:FPR: 6-9MPR: 1200-1550
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.
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
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.
Never forget to replace your air filter again.
- Save 5% on every order
- Choose Your Delivery Schedule
- Edit, Skip, or Cancel Anytime.
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 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 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:
Every 90 Days
Standard ScheduleFor most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.
Every 60 Days
If You Have Pets or AllergiesShedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.
Every 30 Days
If You Have Respiratory Concerns or Live in Smog/Wildfire ZonesFor households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
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 Size | 11.25 x 23.25 x 1 inches |
| Actual Size | 11.25 x 23.25 x 0.75 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 |
Buy the Best 11.25x23.25x1 MERV 8 HVAC & Furnace Air Filters for Home from Filterbuy
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.
TL;DR Quick Answers
Buy the Best 11.25x23.25x1 MERV 8 HVAC & Furnace Air Filters for Home from Filterbuy
For a reliable balance of airflow and everyday air protection, Filterbuy’s 11.25x23.25x1 MERV 8 filters are a smart choice for most homes. They effectively capture common airborne particles like dust, pollen, and lint without restricting HVAC performance—helping maintain system efficiency and indoor comfort. Built with durable, pleated media and consistent sizing for a secure fit, these filters are ideal for routine residential use, especially in homes without severe allergy concerns but still seeking cleaner air and longer HVAC lifespan.
Top Takeaways
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.
Why Choose Our 11.25x23.25x1 MERV 8 Air Filters for Your Home
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."
Supporting Statistics at a Glance
Here’s what data—and our real-world experience—show about MERV 8 filters and indoor air quality:
Cleaner Air with MERV 8
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
Meets EPA Indoor Air Standards
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
Indoor Air Is Often Worse Than Outdoors
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.
Final Thought & Opinion
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.
Next Steps
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.
Frequently Asked Questions
1. What does MERV 8 mean in air filters?
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.
2. How often should I replace my 11.25x23.25x1 MERV 8 filter?
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.
3. Will this size fit my HVAC or furnace system?
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.
4. Is a MERV 8 filter good for allergies?
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.
5. Are Filterbuy’s 11.25x23.25x1 filters made in the USA?
Absolutely. Filterbuy’s filters are proudly manufactured in the USA using high-quality materials, ensuring consistent performance and fast shipping.
Upgrade Your Air with Filterbuy Today
Take the next step toward cleaner indoor air and better HVAC performance with Filterbuy’s 11.25x23.25x1 MERV 8 air filters—designed for dependable, everyday protection. Shop now to enjoy a perfect fit, consistent quality, and an easy way to keep your home’s air fresh and your system running efficiently.