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Actual Size: 17.25x26x1"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.25x26x1"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.25x26x1"
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: 17.25x26x1" in → 17.25x26x1 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 | 17.25 x 26 x 1 inches |
| Actual Size | 17.25 x 26 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 |
At FilterBuy, we're not just about selling filters—we’re about empowering you to protect your home and family with cleaner, healthier air. Our 17.25x26x1 MERV 13 HVAC and furnace air filters are a direct result of our passion for better air and years of experience in manufacturing. These filters are designed to tackle hidden air quality issues, capturing allergens, dust, and harmful particles that affect your family's health.
With insights gained from real-world testing and millions of satisfied customers, we’ve fine-tuned our filters to provide unmatched filtration power. Built with pride using American-made quality, our MERV 13 filters deliver superior performance you can rely on. Whether you're addressing seasonal allergies or just striving for better air purity, these filters offer a proactive, effective solution for a healthier home and more efficient HVAC system.
Let us help you take control of your indoor air quality. At FilterBuy, we make the invisible visible, ensuring your home and HVAC system are protected with the most effective air filtration. Feel confident in your choice—your family deserves it.
MERV 13 Filters for Cleaner, Healthier Air: Captures dust, pollen, pet dander, and other harmful particles to improve air quality.
Boost HVAC Efficiency & Longevity: Increases HVAC system efficiency by up to 15%, extending its lifespan and reducing maintenance needs.
Simple Installation & Low Maintenance: Just select the right size (17.25x26x1) and replace every 1–3 months for optimal performance.
Expert-Backed Performance: Backed by years of experience and in-house testing, FilterBuy filters ensure reliable, high-quality results.
A Healthier Home for Your Family: Reduces allergens, creating a cleaner, fresher atmosphere for a healthier home environment.
When it comes to improving your home's air quality, MERV 13 filters strike the perfect balance between strong filtration and efficient airflow. Designed to capture airborne particles like dust, pollen, and pet dander, MERV 13 filters effectively remove a significant percentage of pollutants—providing cleaner, fresher air for your family. With their optimal filtration performance and ability to maintain airflow, MERV 13 filters are the smart choice for better air quality.
Benefits of MERV 13 Filters:
Improved Air Quality: Effectively removes a higher percentage of airborne pollutants, creating cleaner air in your home.
Healthier Living Space: By reducing allergens, MERV 13 filters support better respiratory health, especially for those with allergies or asthma.
Extended HVAC Life: Captures harmful particles that could damage your HVAC system, helping it last longer and operate more efficiently.
Choosing MERV 13 filters is an investment in a healthier, more comfortable home environment.
Selecting the correct air filter size is essential for maintaining HVAC efficiency and ensuring optimal air quality. To find the right fit, simply check your current filter’s dimensions—typically listed as width, height, and depth. Common filter types, including pleated, fiberglass, and HEPA, each offer varying levels of efficiency.
Steps to Choose the Right Filter Size:
Measure Accurately: Use a tape measure to verify the dimensions of your existing filter.
Consider Efficiency: Higher MERV ratings (like MERV 13) capture more particles, improving filtration performance.
Ensure a Proper Fit: A snug fit ensures no air bypasses the filter, maximizing its effectiveness.
By choosing the correct filter size, you help improve HVAC performance and ensure better air quality throughout your home.
Regularly replacing your air filters is crucial for maintaining indoor air quality and ensuring your HVAC system works at peak performance. Filters typically last between one and three months, depending on factors like home conditions and filter usage.
Neglecting regular replacements can lead to clogged filters, which restrict airflow and force your HVAC system to work harder. This not only increases energy bills but also decreases air quality, impacting your health. By following a consistent replacement schedule, you help your system run smoothly and keep the air in your home cleaner.
When it comes to improving air quality, FilterBuy’s MERV 13 air filters are a top choice. These filters are designed to trap indoor allergens like dust, pollen, and pet dander, creating a healthier environment for your family.
Key Benefits:
High Filtration Power: MERV 13 filters capture particles as small as 0.3 microns, improving air quality.
Long-Lasting Performance: These filters maintain their efficiency longer, reducing the frequency of replacements.
Improved Airflow: The design of our filters allows for optimal airflow while ensuring excellent filtration.
Choosing FilterBuy means investing in better air quality and a cleaner, healthier home environment for you and your loved ones.
Customer feedback plays a vital role in understanding the effectiveness of our products. Filterbuy consistently receives high ratings, with many homeowners sharing positive experiences. Here’s why customers rave about our filters:
Product Reliability: Customers appreciate that FilterBuy’s MERV 13 filters consistently capture dust, pollen, and allergens, improving air quality.
Easy Ordering Process: Our simple online ordering system makes it easy for customers to find the right filter size and type without any hassle.
Fast Delivery: Quick shipping ensures customers receive their filters when they need them most.

"At FilterBuy, we’ve witnessed the powerful impact the right filter can have on your home’s air quality. Our MERV 13 filters are designed with a perfect balance in mind—capturing harmful particles like dust, pollen, and allergens, while ensuring your HVAC system operates smoothly and efficiently. With years of experience and a strong commitment to American-made quality, we understand that selecting the right filter goes beyond just cleaner air—it’s about safeguarding your family and home for the long term."
Health Benefits of MERV 13 Filters
Captures Particles as Small as 0.3 Microns: Effectively traps dust, pollen, smoke, and other harmful airborne particles, significantly improving air quality.
American Lung Association: Proper filtration can reduce airborne allergens by more than 50%, providing relief for allergy sufferers and those with asthma.
Real-World Impact: MERV 13 filters make a tangible difference in homes like yours, offering a healthier environment for your family.
Source: American Lung Association
Impact on Indoor Air Quality
EPA: MERV 13 filters capture up to 80% of indoor pollutants, including fine dust and allergens, significantly improving air quality.
Creates a Healthier Home Environment: With a proven track record from both customer experiences and FilterBuy testing, these filters help reduce allergens and airborne irritants.
Source: EPA
HVAC System Efficiency and Lifespan
Improves HVAC Efficiency by Up to 15%: MERV 13 filters help your HVAC system run more efficiently, reducing strain and lowering energy costs.
Increases Lifespan & Reduces Maintenance Costs: By preventing debris buildup, MERV 13 filters extend the lifespan of your HVAC system and reduce the need for costly repairs.
Source: U.S. Department of Energy
At FilterBuy, we believe the right air filter is more than just a piece of equipment—it’s an essential investment in both your home’s air quality and the longevity of your HVAC system.
MERV 13 Filters: Balanced Filtration for Your Home
Captures Harmful Pollutants: Effectively traps airborne particles like dust, pollen, and pet dander, improving air quality for your entire family.
Perfect for Allergy Sufferers & Pet Owners: Provides significant relief by reducing allergens and pet-related particles, creating a healthier living space.
Strikes the Ideal Balance: MERV 13 filters offer excellent filtration power while maintaining optimal airflow for your HVAC system.
Long-Term Benefits for Your HVAC System:
Extends HVAC Lifespan: By reducing strain on your system, MERV 13 filters help protect and prolong your HVAC's life.
Improves Efficiency by Up to 15%: Enhances your system’s performance, lowering energy costs and reducing the need for maintenance.
Our Expertise:
We’ve seen firsthand how upgrading to MERV 13 filters leads to cleaner air, more efficient HVAC systems, and long-lasting results.
Choosing MERV 13 isn’t just a smart decision—it’s a proactive step toward a healthier home environment.
FilterBuy’s MERV 13 filters are a practical, long-term solution to enhance indoor air quality while protecting your HVAC system. They’re the essential choice for homeowners who value both performance and family protection.
1. Check Your Filter Size
Measure your current filter dimensions or refer to the size listed on your existing filter.
2. Choose MERV 13
Opt for MERV 13 filters for optimal filtration, capturing allergens, dust, and pet dander, creating a healthier home environment.
3. Order Now
Visit our store and select the 17.25x26x1 MERV 13 filters to ensure your home gets the clean air it deserves.
4. Install & Breathe Easy
Replace your old filter with your new MERV 13 filter for cleaner air and improved HVAC performance.
5. Set a Reminder for Replacement
To maintain air quality and HVAC efficiency, set a reminder to replace your filter every 1–3 months.
The best MERV rating for most residential applications is between 8 and 13. MERV 8 to 13 filters offer excellent filtration for dust, pollen, and other common allergens while maintaining optimal airflow for your HVAC system.
No, MERV 13 is not too high for residential use. It offers top-tier filtration for dust, pollen, pet dander, and other allergens without significantly restricting airflow, making it a great choice for homes that prioritize air quality.
MERV 13 filters capture particles as small as 0.3 microns, including dust, pollen, mold spores, and pet dander. These filters provide high-efficiency filtration, especially beneficial for households with allergy sufferers or individuals with sensitivities.
Yes, MERV 13 filters are compatible with most residential HVAC systems. Just be sure your system can handle the slight airflow restrictions, especially in older units. If you're unsure, consult your system's manufacturer for guidance.
For most residential AC systems, MERV 8 to 13 filters are ideal. MERV 13 filters provide the highest level of filtration without sacrificing airflow, making them a solid choice for homes needing superior air quality.
No, MERV 11 is a great choice for residential use. It offers strong filtration, particularly for allergy and respiratory concerns, without causing significant strain on your HVAC system.
Yes, MERV 13 filters are effective at capturing mold spores, helping to improve indoor air quality, especially in homes with mold issues or high humidity.
MERV 13 filters typically last between 1 and 3 months, depending on the air quality and how much the HVAC system is used. Regular replacement ensures optimal efficiency and air quality.
While MERV 13 filters are highly efficient, they may slightly reduce airflow compared to lower-rated filters. However, most modern HVAC systems are designed to handle this level of filtration without significant issues.
Filtrete offers several MERV 13 filters, including their Healthy Living series, which are designed to capture allergens and improve indoor air quality, making them a great option for households with sensitive individuals.
Yes, filters with very high MERV ratings (above 13) can restrict airflow, especially in older or less powerful HVAC systems. This can reduce system efficiency and potentially cause strain. Always check your system's compatibility before choosing a filter with a high MERV rating.
While MERV 13 filters capture larger particles that may contribute to odors, they are not designed to remove smells. For odor removal, filters with activated carbon or specialized filtration systems may be more effective.