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Actual Size: 17.00x27.00x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.00x27.00x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.00x27.00x0.75"
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: 17.00x27.00x0.75" in → 17x27x1 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 | 17 x 27 x 1 inches |
| Actual Size | 17.00 x 27.00 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 |
Finding a 17x27x1 MERV 11 filter that actually fits and performs like it should can be frustrating—that’s why we started making our own. At Filterbuy, every filter is built in our U.S. manufacturing facility using premium materials we’ve tested in millions of real homes. Our MERV 11 filters are engineered to capture fine dust, allergens, and pet dander without straining your HVAC system—because we know clean air shouldn’t come at the cost of airflow. With over 600 sizes (and any custom size you need), fast free U.S. shipping, and factory-direct pricing, you get expert-made filters that truly deliver better air, without the hassle.
MERV 11 = Optimal Balance Captures up to 80% of fine particles (dust, pollen, pet dander) without blocking airflow.
Built & Tested in the USA Every Filterbuy filter is made with premium materials and tested in real homes.
Perfect Fit, Every Time Choose from 600+ sizes or create a custom fit for your HVAC system.
Cleaner Air, Zero Hassle Enjoy free U.S. shipping, fast delivery, and easy Auto-Delivery options.
Research-Backed Protection Meets ASHRAE, EPA, and CDC guidance for healthy indoor air.
First of all, proper use of air filters is one of the main factors that determine the quality of the air, and MERV 11 units are a pretty popular choice. MERV stands for Minimum Efficiency Reporting Value, and it is a rating system that assesses the efficiency of an air filter by the number of particles that the filter can capture out of the air. The ratings go from 1 to 20, where 20 indicates the most efficient filter.
MERV 11 filters are good at providing performance anare d still cost-effective. Their capture rate of 65 to 80% of particulate matter of 1.0-3.0 microns in size is a variety of matter that includes dust mites, mold spores, pet dander, and pollen. These filters are widely used in homes, office buildings, and factories as they are good enough for air purification for peopleʼs comfort, and also for the protection of the HVAC system against dust accumulation.
MERV 11 filters may not always be the right decision, even though they provide better air quality. A higher MERV-rated filter will trap smaller particles more efficiently, but may limit the airflow in some HVAC systems. The limitation of the air leads to higher energy consumption and, in addition, it may cause the system to overheat and consequently be damaged. The decision on which air filter to select should be your last step after you have determined your needs and the capacity of your HVAC system.
The 17x27x1 filter is a source of various benefits both for residential premises and commercial spaces. Its unique size is not only more than adequate for air filtration, but it also stretches to cost savings and space utilization.
Efficient Particle Capture: The 17x27x1 size of the filter enables it to effectively capture dust, pollen, and other airborne contaminants. As a result, indoor air pollution is significantly reduced, thus a healthier atmosphere is delivered.
Economical Solution: This specific model of the filter can store more particles due to its larger surface area, thus the change for replacements is less frequent. Consequently, it is a good economic way of providing clean indoor air.
Space-Saving Design: Its thin design is ideal for houses and offices where there is limited space for the installation of HVAC systems. The small size is performance has not compromised performance.
Choices are abundant when it comes to air filters for HVAC and furnaces; however, Filterbuy products are still unique in their own way. One major factor is the outstanding durability of these products. The manufacturing routines at Filterbuy are focused on the use of premium materials, which, in turn, ensure that the filters will be longer-lasting. Such a lifespan implies not only that the replacements will be infrequent but also that there will be notable cost savings in the long run.
Customer satisfaction is also very important to Filterbuy. Delivering perfect service, they respond to any questions or problems that customers may have promptly and efficiently. Due to fast delivery times and a simple ordering procedure, customers get to have an easy, trouble-free experience. Filterbuy even offers a satisfaction guarantee, committing to fixing any customer dissatisfaction with their purchases.
Using better HVAC and furnace air filters, such as Filterbuy's, can be a major factor in improving indoor air quality. Filtebuy's 17x27x1 MERV 11 filters are the best option for people who have allergies and/or respiratory problems. These are basically allergy-reliever filters whose main work is to capture allergens in the home, such as dust mites, pet dander, pollen, etc., and then remove them from the air in your home.
Consider three points if you want to have the maximum air purification and allergy relief:
Firstly, changing the air filters regularly is a must if you want to keep their air purification function at a high level.
People with allergies and/or respiratory problems would benefit most benefited by using Filterbuy's 17x27x1 MERV 11 filters. The main goal of these filters is to serve as allergy relievers by capturing various allergens in the home, such as dust mites, pet dander, and pollen, and then removing them from the air in your home.
To maximize air purification and get relief from allergies, make sure to consider these three points:
Change air filters regularly to keep their air purification function at a high level.
Pick up a proper MERV rating that suits your particular needs. Generally, a higher MERV rating, such as 11, will offer better filtration.
Make sure that the size of your air filter is the exact match for your HVAC or furnace unit. A poorly fitting filter can allow for some of the air to be unfiltered and thus can be circulated in the room.
Perhaps installing new air filters is intimidating, yet it is only a simple task. To start with, make sure that you have the right size of the filter. Take our MERV 11 air filters, for instance, which are 17x27x1 in size and fit perfectly. Always ensure that you take the measurements twice before you start the installation.
It would be best if you turned off your HVAC system before you begin your work to be on the safe side. The filter compartment can be found either in the return air duct or the blower compartment. After removal of the old filter, it is advisable to check the airflow direction, which is usually indicated by an arrow on the frame. The same direction is the one in which the new filter has to be oriented.
It is good to put the new filter in place securely by sliding it in carefully. You should be replacing the filters of your air system if you are doing it regularly, once every 90 days, and you should be checking it every 30 days. On the other hand, if you have pets, are suffering from an allergy, or live in a highly polluted area, it is recommended that you change your filters more often.
Putting new filters in your device is a brief operation that leads to quite important advantages for the air in your home. The correct size of the filter and the right direction of airflow are the main factors on which the success of the installation depends. By regular maintenance of the filters, you will make sure that your HVAC will last longer and will be able to provide you with cleaner, fresher air.

“After building and testing millions of filters in real homes across America, we’ve learned that the best air filter isn’t just about a high MERV rating—it’s about balance. A well-made MERV 11 filter delivers cleaner air, steady airflow, and lasting system protection. That’s the standard we build into every Filterbuy filter—because your home’s air deserves nothing less.”
At Filterbuy, we’ve tested millions of MERV 11 filters in real homes—and the data backs up what we see every day.
Proven Filtration Efficiency:
MERV 11 filters capture 65–80% of particles sized 1.0–3.0 microns, including dust mites, pet dander, and mold spores.
Verified by ASHRAE, the leading HVAC standards organization.
We design our filters to meet or exceed this benchmark for consistent airflow and performance.
EPA on Air Quality:
The U.S. EPA states that upgraded HVAC filters significantly reduce indoor air pollutants.
Filtration works best when paired with proper ventilation and source control.
We regularly test our media against EPA guidance to confirm real-world performance.
CDC Guidance:
The CDC recommends using the highest MERV rating your system can handle—ideally MERV 13 or higher for hospital-grade protection.
For most homes, our MERV 11 filters offer the ideal balance of air quality and system efficiency.
Bottom line: A well-made MERV 11 filter—like those built and tested by Filterbuy—delivers verified filtration power, steady airflow, and healthier indoor air without the hassle.
After we have produced and tested millions of filters in various homes all over the country, the one thing that we have discovered is: purified air is actually a matter of balance rather than complexity.
MERV 11 is the best point.
Captures ultrafine dust, pollen, and pet dander.
Does not cause any resistance to the air flow; thus, the HVAC system is kept clean and safe.
Perfect for people who want clean air without having to pay more for electricity.
Real results we have seen:
Within a couple of weeks, houses that have changed from using basic fiberglass to MERV 11 filters demonstrate less dust and fewer allergy triggers.
The air flow remains normal—there is no overloading of the system, hence, no performance drop.
Our viewpoint:
The “best” air filter means not only having the highest rating but also the most suitable, well-designed, and effective daily.
Each Filterbuy unit is made in the U.S., is tested under real-life situations, and is durable.
In essence, a MERV 11 filter is what you need if you want to have a good and reliable protection, clean air, as well as long-term HVAC efficiency—i.e., perfect equilibrium for comfort and peace of mind.
Get cleaner air and protect your HVAC system in just a few easy steps:
Check Your Filter Size
Look for dimensions on your current filter’s frame.
Need a custom fit? Use our Custom Size Tool.
Pick Your MERV Rating
MERV 8: Basic dust protection.
MERV 11: Best for most homes; captures pollen, pet dander, and fine dust.
MERV 13: Maximum defense for allergies or asthma.
Order Direct from Filterbuy
Fast, free U.S. shipping and factory-direct pricing.
Add Auto-Delivery to stay on schedule.
Install & Maintain
Turn off your system.
Match airflow arrows on the frame.
Replace every 90 days (or more often with pets/allergies).
Enjoy Cleaner Air
Relax knowing your home and HVAC system are protected by U.S.-made Filterbuy filters designed for real-world performance.
No. MERV 11 is ideal for most homes—it captures pet dander, pollen, and fine dust without restricting airflow in properly maintained systems.
MERV 8–13 is generally best. MERV 8 suits standard dust control, while MERV 11–13 provides better allergy and pet protection.
Yes. Very high MERV filters (above 13) can restrict airflow if the HVAC system isn’t designed for them, causing strain and reduced efficiency.
Top-rated brands include Filterbuy, 3M Filtrete, Honeywell, and Nordic Pure—known for quality materials, consistent performance, and U.S. manufacturing.
A MERV 11 pleated filter is a strong all-around choice—it balances airflow, efficiency, and allergen removal for most residential systems.
Trane typically recommends MERV 8 to 13 filters, depending on the system model and the home’s air quality needs.
Hospitals generally use MERV 14–20, with surgical suites and isolation rooms often using HEPA (MERV 17+) filters.
Not directly. It improves air quality and reduces dust buildup in coils and ducts, which can improve efficiency—but very high MERV filters may increase energy use if too restrictive.
Bryant recommends MERV 8 to 13, depending on system design and filtration needs. Always check your model’s specs.
Cheap fiberglass filters only catch large debris and protect equipment. Higher-quality pleated filters trap smaller particles, last longer, and improve indoor air quality.
MERV 11 or higher is recommended to capture airborne mold spores effectively.
For HVAC systems—none. “High-flow” performance filters that add horsepower apply to car engines, not home HVAC systems.