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Actual Size: 8 7/8 x 29 7/8 x 3/4
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: 8 7/8 x 29 7/8 x 3/4
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 8 7/8 x 29 7/8 x 3/4
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: 8 7/8 x 29 7/8 x 3/4 in → 9x30x1 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 | 9 x 30 x 1 inches |
| Actual Size | 8 7/8 x 29 7/8 x 3/4 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 |
Tired of generic air filters that barely make a difference? At Filterbuy.com, we don’t just sell 9x30x1 MERV 13 hvac and furnace air filters—we engineer them for real results. Built in our family-owned U.S. facility, these filters are crafted to meet the same high-performance standards we use in our own homes. From testing airflow resistance to optimizing particle capture for allergens, we’ve fine-tuned every detail to deliver cleaner, healthier air. Experience the Filterbuy difference—trusted by homeowners who expect more from their filters.
MERV 13 filters capture 90%+ of allergens, dust, and particles.
Trusted by Filterbuy experts and used in their own homes.
Made in the USA with premium, long-lasting materials.
Ships fast and direct from our U.S. facility.
Easy to install and lasts up to 90 days.
Filterbuy 9x30x1 MERV 13 air filter is professionally manufactured to safeguard your residence against air-borne contaminants such as pollen, dust, molds, pet dander, as well as virus-laden particles. They have the hospital-grade filtration strength and sturdy build, making them suitable in a household with allergies, asthma, or with an emphasis on healthier indoor air.
The filters are manufactured in the USA out of the high-quality, moisture-resistant materials with the electrostatically charged synthetic media that traps 98 percent of the airborne particles without inhibiting airflow. These filters are easy to install and have a life of up to 90 days and they fit standard HVAC and furnace systems and assist in making the system more efficient and reduce energy costs.
“We build every 9x30x1 MERV 13 filter the way we’d want it in our own homes—reliable, long-lasting, and engineered to trap even the finest airborne particles. After years of testing airflow, materials, and real-world performance, we’ve fine-tuned our filters to deliver hospital-grade protection without compromising your HVAC system’s efficiency.”
We don’t just manufacture MERV 13 filters—we use them ourselves. Here's why they work, backed by trusted research and real-life experience:
Confirmed by the EPA.
We see this in homes with sealed windows, pets, and HVAC recirculation.
Source: EPA.gov
Includes mold spores, pet dander, pollen, and fine dust.
Based on ASHRAE standards and our lab testing.
Source: ASHRAE.org
Linked to asthma, allergies, and respiratory infections.
We hear from customers who notice real health improvements.
Source: Lung.org
Choosing the right air filter goes beyond specs—it’s about real-life performance. Here’s what we’ve learned from first-hand experience:
MERV 13 filters make a noticeable difference.
We’ve seen cleaner air reduce allergy symptoms, improve sleep, and protect HVAC systems.
We use what we sell.
Our team installs these same 9x30x1 MERV 13 filters in our own homes. That’s how much we trust them.
Made for peace of mind.
Every Filterbuy filter is crafted with care, tested for quality, and backed by trusted research.
Cleaner air = better health. Especially for families with allergies, asthma, or pets.
Better filters = longer HVAC life. Reduced strain and improved efficiency.
Trusted quality = confident choice. You’re not just buying a filter—you’re investing in your home’s air quality.
👉 Cleaner air isn’t a luxury—it’s a decision. And we’re here to help you make it with confidence.
Follow these simple steps to get started:
1. Pick Your Quantity
Choose how many filters you need (replace every 3 months).
2. Add to Cart
Click “Add to Cart” to begin a fast, secure checkout.
3. Get Fast Shipping
Shipped directly from our U.S. facility to your door.
4. Install Easily
Swap out your old filter in seconds. No tools needed.
5. Breathe Easier
Enjoy cleaner air, fewer allergens, and a healthier home.
MERV 13 refers to the filter’s ability to trap particles as small as 1.0–3.0 microns, including pollen, mold spores, dust mites, pet dander, and even virus-carrying particles. It offers superior filtration for residential use without significantly restricting airflow.
If your HVAC or furnace system uses a 9x30x1 filter size, then yes. Always check the size printed on your current filter or your system manual to confirm compatibility.
We recommend replacing it every 90 days for most homes. If you have pets, allergies, or poor air quality, consider changing it every 60 days for optimal performance.
Yes. MERV 13 is considered the highest-rated filter that most residential systems can handle safely. It balances strong filtration with efficient airflow. Always check your system’s specifications to ensure compatibility.
It helps reduce allergens, improve indoor air quality, protect your HVAC system, and support better respiratory health—especially in homes with kids, pets, or asthma sufferers.
