Skip to main content
filterbuy
 

9x30x1 MERV 8 Pleated Air Filter

 

Actual Size: 8.75x29.75x0.75

$59.94$9.99/ea
delivery truckFree Delivery
money downFactory-Direct Low Prices, Made in the USA
editor choiceHassle-Free Returns & Free Exchanges
 
 
 
 
 
 
 
 
 
 
Standard
Standard

RESIDENTIAL AND/OR COMMERCIAL USE

Change Every 3 Months

Quantity

Top-Rated Filters. American Made. Delivered Free.

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.

USA flag flying

Proudly Made In The USA

Two delivery boxes from Filterbuy

Fast, Free Shipping on Every Order

All types of air filters from Filterbuy

Premium Materials That Go The Distance

A child and an adult holding the Filterbuy air filter

85,000+ 5-Star Reviews From Happy Customers

Stacked Filterbuy MERV-8 air filters

Save Up to 70% Per Filter with Packs

Things to Know About Filter Sizes

Finger pointing to nominal size

Nominal Size

  • The rounded size printed on your filter or HVAC unit (e.g., 9x30x1).
  • Usually whole numbers to make identifying and ordering easier.
  • A label for compatibility—not the exact measurement.
Finger pointing to actual size

Actual Size

  • The true, trimmed dimensions of the filter (e.g., 8.75x29.75x0.75 inches).
  • Filters are manufactured slightly smaller so they slide into the filter slot without forcing.
  • If you don't know your nominal size, measure your filter to get the actual size, then round up to find the nominal size to search on our site.
Help icon

Why the difference?

  • Nominal sizes simplify shopping and standardize categories.
  • Actual sizes ensure the filter fits properly inside your HVAC's filter rack.

How To Find Your Nominal Size When You Don't Know It

Air Filter Explaining Each Size
Nom 9"Act 8.75"
Nom 1"Act 0.75
Nom 30"Act 29.75"
1

Measure length × width × depth with a tape measure to find the actual size.

2

Round up each dimension to the nearest whole number to get the nominal size. Example: 8.75x29.75x0.75 in → 9x30x1 nominal.

3

Search by nominal size on our site for the best fit.

Help icon
Pro tips: If your filter is missing or damaged, measure the filter slot opening the same way.

Why Getting the Right Size Matters

  • Too small? Air can bypass the filter, reducing air quality and efficiency.
  • Too big? It won't fit—risking bent frames and airflow issues.
  • Just right? You get maximum performance, better filtration, and cleaner air.
Free Exchange Policy

Free Exchange Policy

If the filter you buy doesn't fit, we'll send you a better size.

Need a Non-Standard Size?

Need a Non-Standard Size?

Build a custom filter in just a few clicks.

Start Now

What's a MERV Rating?

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.

Swipe To See More →
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Bacteria
Odors
MERV 8

MERV 8

Comparable to:FPR: 4-7MPR: 600-1000
MERV 11

MERV 11

Comparable to:FPR: 6-9MPR: 1200-1550
MERV 13

MERV 13

Comparable to:FPR: 10MPR: 1900-2800

What Makes Our Filters Last 90 Days? Quality, From the Inside Out

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:

Pleated Design

More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.

Electrostatically Charged Media

Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.

Synthetic Beverage Board Frame

Engineered to resist warping in extreme temperatures and high humidity.

Air Filter Wit Zoom In Key Features

Aluminum Dual Wire Backing

A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.

Made in the USA

Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.

How to Install Your Filter in 4 Simple Steps

How to install your filter - Step 1 - return-vent

Turn Off Your HVAC SystemSafety first.

How to install your filter - Step 2 - return-vent

Remove The Old FilterLook for the airflow arrow and make note of the direction.

How to install your filter - Step 3 - return-vent

Slide In Your New FilterArrow should point toward the system (same direction as before).

How to install your filter - Step 4 - return-vent

Turn Your System Back OnAnd enjoy the fresh, clean air.

Auto Delivery Filterbuy

Never forget to replace your air filter again.

  • Save 5% on every order
  • Choose Your Delivery Schedule
  • Edit, Skip, or Cancel Anytime.
Learn More

Pleated Filters vs. Fiberglass—What's the Difference?

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:

Pleated Filter

Pleated Filters

Efficiency:

High (MERV 8–13) – Traps more particles

Lifespan:

90 days – Long-lasting performance

Air Quality:

Excellent – Cleaner, healthier air

Materials:

Recyclable and durable

Fiberglass Filter

Fiberglass Filters

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.

How Often Should You Change Your Filter?

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:

Calendar Illustration Every 90 days

Every 90 Days

Standard Schedule

For most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.

Calendar Illustration Every 60 days

Every 60 Days

If You Have Pets or Allergies

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.

Calendar Illustration Every 30 days

Every 30 Days

If You Have Respiratory Concerns or Live in Smog/Wildfire Zones

For households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.

Help icon
Final tip:
Want to stay on track? Set a reminder—or skip the stress with auto-delivery so fresh filters show up right when you need them.

Don't Just Take Our Word For It...

Got More Questions? We've Got Answers.

Product Specifications

Nominal Size9 x 30 x 1 inches
Actual Size8.75 x 29.75 x 0.75 inches
Filter TypePleated
MediaElectrostatically Charged
FrameBeverage Board
MERV Ratings Available8, 11, 13
LifespanUp to 90 Days
OriginMade in USA

Buy the Best 9x30x1 MERV 8 HVAC & Furnace Air Filters for Home from Filterbuy.com

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.

Top Takeaways

  • 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.

Why Choose 9x30x1 MERV 8 Filters from Filterbuy?

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.”

Why Filterbuy’s 9x30x1 MERV 8 Filters Make a Difference

We design our filters based on real-world performance and trusted research. Here’s why our MERV 8 filters are the smart choice:

1. Indoor Air Is Often 2–5× More Polluted

  • 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.

2. MERV 8 = Optimal Filtration for Homes

  • 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.

3. Upgrading from MERV 1–4 Makes a Big Impact

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.

Final Thought & Expert Opinion

Choosing the right air filter goes beyond size—it’s about performance, reliability, and real-world results.

Why We Recommend MERV 8

  • 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.

What Homeowners Are Telling Us

  • 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.”

Why Filterbuy Filters Stand Out

  • 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.

Hand holding a Filterbuy MERV 8 indoor air filter against a blue sky, showcasing standard residential and commercial HVAC filter packaging.

Next Steps: Get Cleaner Air in 5 Simple Moves

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.

Frequently Asked Questions

1. What does MERV 8 mean in air filters?

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.

2. Is 9x30x1 a standard filter size?

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.

3. How often should I replace a 9x30x1 MERV 8 filter?

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.

4. Will a MERV 8 filter affect my HVAC system’s airflow?

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.

5. Can MERV 8 filters help with allergies?

Yes. MERV 8 filters trap common allergens like pollen, dust mites, and pet dander, helping reduce allergy symptoms and improving indoor air quality.