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Actual Size: 8 7/8 x 29 7/8 x 3/4
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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: 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 low-quality filters that clog too quickly or fail to protect your indoor air? At Filterbuy.com, we’ve seen firsthand how the right air filter can make a big difference. That’s why our 9x30x1 MERV 8 HVAC and furnace air filters are engineered in-house for lasting performance—trapping dust, pollen, and other irritants without restricting airflow. Built in the USA and rigorously tested in real home environments, our filters are trusted by families who care about air quality and HVAC efficiency. When you choose Filterbuy, you're choosing filters made by people who understand what clean air really means.
MERV 8 is the best home filter and airflow.
Designed in the USA using such high-quality, durable materials.
Traps 90 percent of dust, pollen, pet dander, and mould spores.
Trusted by homeowners, research endorsed by the EPA.
Rapid delivery, simple installation, and automatic delivery.
In terms of guarding the air quality of your house and HVAC system, the 9x30x1 MERV 8 filters are trustworthy and will serve you well. These filters have been designed to collect up to 90 percent of common airborne particles, such as dust, pollen, pet dander, and mold spores and are the ideal balance between airflow and filtration efficiency. They are perfect to use with residential HVAC and furnace systems, and they also assist in decreasing allergens, as well as promoting the life of your unit and energy efficiency.
All Filterbuy filters are produced in the USA using high quality, durable materials that are heavily tested in regards to performance and fit. Whether it is seasonal filter replacement or the need to control indoor allergies all year round, our 9x30x1 MERV 8 filters offer clean air with convenience, shipped quickly and at no cost to your doorstep.
“After years of helping homeowners improve indoor air quality, we’ve learned that not all filters are created equal. Our 9x30x1 MERV 8 filters are engineered to balance airflow and filtration—so you don’t sacrifice HVAC efficiency for cleaner air. We design, build, and test every filter ourselves because we know what it takes to protect the air your family breathes.”
We design our filters based on real-world performance and trusted research. Here’s why our MERV 8 filters are the smart choice:
Americans spend ~90% of their time indoors.
Indoor air can be 2 to 5 times more polluted than outside.
Source: EPA.gov
💡 We’ve seen how switching to higher-efficiency filters dramatically improves air quality in homes where families struggle with dust and allergies.
Captures large particles like dust, pollen, pet dander, mold spores (3–10 µm).
Balances strong filtration with proper airflow.
Source: EPA.gov Tech Bulletin
💡 Our in-house tests confirm that MERV 8 offers superior performance without overloading HVAC systems.
Basic filters often miss common indoor pollutants.
MERV 5–8 filters greatly reduce airborne contaminants.
Source: AirNow.gov
💡 Many customers report immediate relief from allergies and cleaner air after switching to Filterbuy MERV 8.
✅ Built in the USA, rigorously tested, and trusted by families nationwide—Filterbuy filters are made by people who understand what cleaner air means.
Choosing the right air filter goes beyond size—it’s about performance, reliability, and real-world results.
Excellent balance of filtration and airflow.
Traps dust, pollen, mold spores, and pet dander.
Keeps HVAC systems efficient without airflow restriction.
💡 From our experience, this is the ideal level for most homes.
Noticeable drop in allergy symptoms.
Cleaner vents and improved airflow.
HVAC units run more smoothly and last longer.
💬 “We’ve seen firsthand how fast customers experience cleaner air after upgrading from basic filters.”
Made in the USA with durable, high-performance materials.
Rigorously tested in real residential environments.
Shipped fast and free to your doorstep.
✅ Bottom Line: If you want a dependable filter that delivers clean air and protects your HVAC system, Filterbuy’s 9x30x1 MERV 8 is a proven, trusted choice.
1. Pick Your Quantity
Decide how many filters you need.
Bulk orders save money and reduce future hassle.
2. Set Delivery Preferences
Choose one-time purchase or auto-ship.
Never forget a filter change again.
3. Checkout Securely
Fast, safe online payment.
Orders ship quickly—straight to your door.
4. Install with Ease
Simple, tool-free installation.
Fits perfectly into your HVAC or furnace system.
5. Enjoy the Results
Breathe cleaner, fresher air.
Support your system’s efficiency and your family’s health.
MERV 8 is a mid-level filtration rating that captures 90% of airborne particles like dust, pollen, mold spores, and pet dander—ideal for most residential HVAC systems.
While not the most common, 9x30x1 is an available size for specific HVAC and furnace units. Always check your system’s manual or current filter size before ordering.
Replace your filter every 60 to 90 days for optimal performance. Homes with pets, allergies, or high usage may need more frequent changes—every 30 to 60 days.
No. MERV 8 filters are designed to provide strong filtration without restricting airflow, making them a safe and efficient choice for home HVAC and furnace systems.
Yes. MERV 8 filters trap common allergens like pollen, dust mites, and pet dander, helping reduce allergy symptoms and improving indoor air quality.
