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Actual Size: 8x20x1"
Free Delivery 
Factory-Direct Low Prices, Made in the USA
Hassle-Free Returns & Free Exchanges
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 8x20x1"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 8x20x1"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL 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: 8x20x1" in → 8x20x1 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 & DebrisDust Mites & ParticlesPollenMoldLintDander
Smoke & Smog
Comparable to:FPR: 10
MPR: 1900-2800
Dust & DebrisDust Mites & ParticlesPollenMoldLintDanderSmoke & 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 | 8 x 20 x 1 inches |
| Actual Size | 8 x 20 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 |
After manufacturing and shipping millions of air filters nationwide, we’ve learned one thing: not all filters are created equal. That’s why our 8x20x1 MERV 11 HVAC and furnace air filters are built differently—from the inside out. Engineered in-house using high-efficiency pleated media, our filters are designed to trap fine dust, mold spores, and airborne allergens without restricting airflow. We manufacture every filter right here in the USA and ship directly from our facility to your doorstep—no middlemen, no stale stock, just fresh, factory-direct quality you can trust. At Filterbuy.com, we don’t just sell filters—we build them with the performance, durability, and indoor air quality your home deserves.
MERV 11 filters clean better Traps dust, pollen, pet dander, and mold—while keeping airflow strong.
Made in the USA Fresh from our factory. No middlemen. No shelf aging.
Backed by research Trusted by the EPA and health experts for home air quality.
Cost-effective protection Less than $1 per person/month for cleaner air and HVAC efficiency.
Simple to manage Easy ordering, auto-ship options, and fast DIY installation.
In terms of safeguarding the air quality inside your house, Filterbuy’s 8x20x1 MERV 11 filters are perfectly suitable to clean the air. These filters were made to remove 95% of particles in the air, such as dust, pollen, pet dander, and mold spores; hence, they are the filters that perfectly fit for households with pets, allergy sensitivities, or high indoor activity.
Also, these filters are designed and constructed using mass-production methods in the USA by applying a water-resistant frame that is core-dry and electrostatically charged, pleated as a medium for longer life and higher particle capture. Our direct-to-door delivery is the other plus that guarantees you get filters that have been freshly produced and do not carry any retail markups or long shelf times.
Be it that you are changing your HVAC or furnace filter, going for MERV 11 will mean that there will be fewer allergens, better HVAC performance, and the air will be cleaner so that you can feel it. Shop at Filterbuy.com with confidence—trusted by homeowners and HVAC pros alike.
“We’ve spent over a decade refining how our filters are made—because clean air isn’t just a product, it’s a promise. Our 8x20x1 MERV 11 filters are engineered to outperform off-the-shelf brands by combining high-efficiency media with airflow-friendly design. Every filter we ship is fresh from our U.S. factory floor—not a warehouse shelf—so homeowners get consistent performance they can rely on.”
We’ve manufactured and shipped millions of filters, and the data supports what our customers experience daily: MERV 11 filters make a real difference.
1. Cleaner Air, Proven by the EPA
Captures up to 85% of particles sized 3–10 microns (dust, pollen, mold).
Filters at least 20% of particles as small as 0.3 microns.
Ideal for homes with allergies, pets, or high foot traffic.
2. High Value at Low Cost
Costs less than $1 per person/month to upgrade to high-efficiency filters.
Backed by Berkeley Lab research on indoor air quality.
We keep prices low with direct-to-door shipping.
3. Health Recommendations You Can Trust
MERV 11–12 filters are recommended by the NY Dept. of Health.
Helps reduce pet dander, bacteria, and mold indoors.
Many of our customers report noticeable air quality improvements in just weeks.
🔗 Health.NY.gov – Air Cleaner Guidelines
At Filterbuy, we’ve built and shipped millions of air filters—and here’s what we’ve learned:
1. MERV 11 hits the sweet spot.
Strong filtration for allergens, dust, and pet dander.
Gentle on HVAC systems—maintains airflow.
Perfect for households with allergies, pets, or active lifestyles.
2. Customers notice real results.
Cleaner air within days.
Fewer allergy symptoms.
Longer-lasting HVAC efficiency.
3. Factory-direct quality matters.
No aging on warehouse shelves.
Made in the USA with full quality control.
Shipped fresh and fast from our facility to your door.
Our Take: MERV 11 isn’t just a product—it’s a smart, long-term investment in your home’s health and comfort. We proudly stand behind every filter because we’ve built them to perform and last.
1. Confirm Your Filter Size
Not sure? Try our Filter Size Finder Tool.
2. Choose MERV 11
Perfect for homes with pets, allergies, or asthma.
3. Order from Filterbuy.com
Made in the USA.
Shipped fresh, fast, and direct from our factory.
4. Subscribe & Save
Set up auto-delivery every 1–3 months.
Save time and money—no more missed replacements.
5. Install Easily
Use our installation guide.
Replace in minutes—no tools needed
💡 Pro Tip: Sign up for filter change reminders at checkout to stay on schedule!
MERV 11 filters trap over 85% of particles like dust, pollen, pet dander, and mold spores. They're ideal for homes with pets, allergy sufferers, or anyone seeking better indoor air quality, without sacrificing airflow.
We recommend replacing it every 2–3 months for optimal performance. If you have pets, allergies, or run your HVAC system constantly, check and replace it every 1–2 months.
All our filters are made in the USA and shipped fresh from our factory—never from old warehouse stock. Plus, we use durable frames, moisture-resistant materials, and electrostatically charged media for superior particle capture.
Yes, most modern residential HVAC and furnace systems are compatible with MERV 11. However, always check your system’s manual to ensure MERV 11 doesn’t exceed the recommended rating.
Yes! Filterbuy offers discounts on bulk purchases and additional savings with auto-delivery. Subscriptions also ensure you never forget to replace your filter, helping maintain air quality year-round.
