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Actual Size: 19 5/8 x 19 7/8 x 4 3/8"
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Factory-Direct Low Prices, Made in the USA
Hassle-Free Returns & Free Exchanges
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 19 5/8 x 19 7/8 x 4 3/8"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 19 5/8 x 19 7/8 x 4 3/8"
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: 19 5/8 x 19 7/8 x 4 3/8" in → 20x20x5 nominal.
Search by nominal size on our site for the best fit.
5″ filters give you maximum filtration with minimal maintenance — lasting up to 12 months while handling higher MERV ratings without restricting airflow.
Sizing note:
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 | 20 x 20 x 5 inches |
| Actual Size | 19 5/8 x 19 7/8 x 4 3/8" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13 |
| Lifespan | Up to 12 Months |
| Origin | Made in USA |
You may already be aware of the health benefits of clean air. Ever pondered the part your air filters contribute to this? Well, if you're employing Filterbuy Replacement Honeywell 20x20x5 MERV air filters, you're on a great track.
Boasting a MERV rating, these filters excel at snaring minute particles. Their generous dimensions further enhance their ability to ensnare pollutants.
However, these filters are not just about size and particle-capturing ability. What distinguishes them from the masses, don't you find yourself wondering?
With a MERV 11 rating, Filterbuy Honeywell 20x20x5 filters guarantee outstanding indoor air quality.
Larger in size, these filters capture a high amount of pollutants, thus promoting HVAC system efficiency.
Allergens are no match for these filters as particles as tiny as 3 microns get trapped.
Durability is another hallmark of Filterbuy Honeywell filters, ensuring less frequent replacement needs.
These filters provide unparalleled value for money by fusing affordability with environmental sustainability.
Filterbuy Replacement Honeywell 20x20x5 air filters provide many advantages for keeping a healthy space in your home. You'll immediately notice improved air quality and better HVAC system performance.
Cleaner Air – Filterbuy Honeywell 20x20x5 MERV 11 filter captures dust, lint, debris, mold, pollen, pet dander, dust mites and auto emissions. It makes sure they do not collect on your evaporator coil, in your furnace, or air ducts.
Better Performance – A clean and well-kept filter reduces strain on your heating and cooling devices. As a result, it lowers energy use and cuts power bills.
Long-Lasting Durability – These filters outlast many competitors, requiring fewer replacements and offering long-term savings.
For better air quality, increased efficiency, and overall value, Filterbuy Replacement Honeywell 20x20x5 MERV air filters are a wise selection.
There are many benefits of Honeywell replacement filters from Filterbuy. Just make sure to choose the right size when it comes to replacing your filters for the sake of your HVAC system.
Optimal Filtration: An ill-fitting filter allows contaminants to escape filtration, reducing indoor air quality.
System Efficiency: Filters that are too small or improperly installed can let particles bypass, leading to HVAC strain and potential damage.
Enhanced Surface Area: The 5-inch depth provides a larger surface area. This allows better airflow and improved particle capture.
Extended Lifespan: Thicker filters like the 20x20x5 pleated filter last longer. It needs fewer replacements and offers cost savings over time.
Choosing the right filter size ensures optimal HVAC performance and cleaner indoor air. Filterbuy offers a comprehensive guide on measuring your air filter correctly. If your size isn’t standard, custom-size filters are available for a perfect fit.
Filterbuy 5-inch replacement filters are designed to deliver crisp, clean indoor air. It’s like a breath of fresh mountain air.
Efficient & Clean – These filters trap dust, pollen, and mold. This helps to reduce energy use and lower carbon emissions.
Advanced Design – The pleated surface helps catch more particles. The strong build makes the filters last up to three times more than regular fiberglass filters.
Choosing Filterbuy Honeywell replacement filters ensures superior air quality and a more eco-conscious lifestyle—now that’s refreshing.
Filterbuy Honeywell 20x20x5 MERV air filters offers great value. These filters save you money over time by lasting longer and reducing the need for frequent replacements.
Consider a high-quality winter coat analogy. A cheap coat needs replacing every year, but a good one lasts for many winters. Honeywell’s filters work the same way. They’re made to last. This also means giving you long-term savings.
The long lifespan means fewer trips to the store and less time spent on changing filters. This lets you enjoy clean air without the hassle.
Why Choose Filterbuy Air Filters?
Filterbuy offers high-performance filters that enhance air quality and HVAC efficiency. With a focus on quality and convenience, they ensure you get the best value for your filtration needs.
Key Benefits:
Fast order processing with nationwide shipping
Affordable subscription service for regular deliveries
100% American-made filters
Easy installation with clear instructions
Filters that last up to 3x longer than fiberglass alternatives
Filterbuy Replacement Air Filters offer a variety of sizes, thicknesses, and MERV ratings. This ensures you can find the right filters for residential, commercial, or industrial use.
Change it every 3 to 6 months. If you have pets, allergies, or live in a high pollen area, change it more often for better airflow and cleaner air.
A MERV 11 filter is not too restrictive for most modern HVACs. It balances between filtering out smaller particles and maintaining proper airflow. If your HVAC is older or struggles with airflow, it’s best to check its capacity.
Yes. But ensure your HVAC handles the increased filtration. MERV 12 offers finer filtration. They slightly reduces airflow. Verify that your system is compatible with the higher rating.
MERV 11 indicates that the filter can capture smaller particles such as dust, pollen, mold spores, and pet dander. It’s ideal for homes with pets or people with allergies. The higher the MERV rating, the better the filter is at trapping airborne particles.
A high MERV filter can damage your furnace if it restricts airflow too much. This causes the system to work harder. This can lead to higher energy bills and potential system strain. Always check if your furnace is designed to handle higher MERV ratings before installing one.
Your furnace filter needs changing if it looks dirty, clogged or discolored. Also, change it if airflow is weak or your system runs constantly.
MERV ratings between 8 and 11 are best for maintaining good airflow in residential systems. They provide effective filtration while ensuring the system operates efficiently without too much strain on airflow.
Thicker air filters are not necessarily bad for HVACs. But they can restrict airflow if HVAC isn't designed for them. Thicker filters offer better filtration and last longer. But it's vital to ensure your system can handle the increased thickness.
Pleated air filters can slightly restrict airflow. But they offer better filtration than non-pleated filters. Most modern HVACs are designed to handle pleated filters without significant issues. Always ensure your system can support pleated filters to avoid reduced efficiency.
MERV 12 is not too high for home use. Especially if you have concerns like allergies or want better filtration of fine particles. It can improve air quality by capturing smaller particles. Ensure your HVAC can handle the increased filtration level to avoid restricted airflow.
A good MERV level for a house is between 8 and 11. This range provides solid filtration for common household particles like dust, pollen and pet dander. All while maintaining efficient airflow in most residential HVACs.
MERV 11 is equivalent to FPR 7 (Filter Performance Rating) or MPR 1000-1200 (Microparticle Performance Rating). These ratings also provide good filtration for small particles and allergens, making them ideal for homes with pets or allergy concerns.
