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10x18x1 MERV 8 Pleated Air Filter

 

Actual Size: 9.5 x 17.5 x 0.75"

$68.94$11.49/ea
delivery truckFree Delivery
money downFactory-Direct Low Prices, Made in the USA
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Standard
Standard

RESIDENTIAL AND/OR COMMERCIAL USE

Change Every 3 Months

About

  • This is a list 10x18x1 MERV 8 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
  • Actual air filter size: 9.5 x 17.5 x 0.75"
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) offers standard protection from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow.
  • High-quality construction means electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame to resist heat and humidity
  • Built to last 3 months. 300% longer than fiberglass models
  • 100% manufactured in the United States and designed with recyclable materials
  • Learn more about 10x18x1 Air Filters
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.

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Proudly Made In The USA

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All types of air filters from Filterbuy

Premium Materials That Go The Distance

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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., 10x18x1).
  • 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., 9.5 x 17.5 x 0.75" 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 10"Act 9.5 "
Nom 1"Act 0.75"
Nom 18"Act 17.5 "
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: 9.5 x 17.5 x 0.75" in → 10x18x1 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.

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.

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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 Size10 x 18 x 1 inches
Actual Size9.5 x 17.5 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 10x18x1 MERV 8 HVAC & Furnace Air Filters for Home from Filterbuy

We’ve engineered clean air from the inside out—so you don’t have to second-guess what’s in your filter. At Filterbuy.com, we’ve spent years perfecting our 10x18x1 MERV 8 HVAC and furnace filters to meet the everyday air quality challenges real homeowners face. Based on testing across thousands of homes and customer feedback, we’ve designed these filters to trap up to 90% of airborne particles like dust, pet dander, and pollen—without compromising HVAC efficiency. Unlike big-box brands that prioritize mass production, our filters are proudly made in the USA, shipped fast, and built to deliver long-term value. We've seen firsthand how the right filter can extend HVAC life, improve indoor air quality, and lower maintenance costs—and we're here to deliver exactly that to your doorstep.

TL;DR Quick Answers

Buy the Best 10x18x1 MERV 8 HVAC & Furnace Air Filters for Home from Filterbuy

For reliable everyday air filtration, Filterbuy’s 10x18x1 MERV 8 filters strike a smart balance between airflow and particle capture—ideal for most homes. They effectively trap dust, pollen, mold spores, and pet dander without overworking your HVAC system. Built with high-quality pleated media and sturdy frames, they last longer and maintain efficiency better than basic fiberglass options. If you want consistent indoor air quality, energy efficiency, and dependable performance, Filterbuy offers a cost-effective, USA-made solution designed for real home conditions.

Top Takeaways

When it comes to protecting your home’s air and HVAC system, the right filter makes all the difference. Filterbuy’s 10x18x1 MERV 8 air filters are crafted to strike the ideal balance between filtration efficiency and airflow performance. Designed to capture up to 90% of common household contaminants—including dust mites, lint, pollen, mold spores, and pet dander—these filters help reduce allergy triggers and improve overall indoor air quality without straining your HVAC unit.

Each filter is made in the USA using high-quality, pleated synthetic media supported by a durable beverage board frame, ensuring long-lasting strength even in high-moisture environments. And because we manufacture and ship directly from our facility, you get consistent quality, fast delivery, and competitive pricing—no middleman markup.

Whether you’re replacing filters in a single-family home or buying in bulk for maintenance schedules, Filterbuy offers flexible pack sizes and subscription options to make clean air simple and worry-free.

10x18x1 MERV 8 Furnace & HVAC Air Conditioner Filters

“We’ve tested countless filter designs over the years, but our 10x18x1 MERV 8 stands out for one key reason: it delivers high-efficiency filtration without suffocating your system. Our customers want cleaner air, lower energy bills, and longer HVAC life—and that’s exactly what this filter is built to do. Every pleat, every frame, every shipment reflects what we’ve learned from decades of hands-on HVAC experience.”

Why Filter Quality Matters

Backed by research. Proven by experience.

1. Indoor Air Is Often More Polluted Than Outdoor Air

2. Your HVAC Uses Nearly 50% of Home Energy

3. Clean Filters Cut HVAC Energy Use by Up to 15%

Final Thought & Opinion

A simple change that delivers real impact.

Why We Recommend It:

Cleaner Air, Fewer Allergies

Better HVAC Performance

Lower Energy Bills

From Our Experience:

Our take: A quality air filter isn't an upgrade—it's a must-have. And when it’s engineered with care, made in the USA, and backed by decades of experience, you're not just breathing easier—you’re making a smart, lasting investment.

Next Steps

Get started in just a few clicks:

Pick Your Pack Size

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Confirm Your Size

Learn About MERV

Buy with Confidence

💬 Need help? Contact our filter experts—we’re ready to assist.

Frequently Asked Questions (FAQ)

1. What does MERV 8 mean, and is it good for my home?

Yes—MERV 8 is ideal for most residential homes. It captures up to 90% of common airborne particles like dust, lint, pollen, mold spores, and pet dander without restricting airflow, making it a smart choice for families, pet owners, and allergy sufferers.

2. How often should I replace a 10x18x1 MERV 8 air filter?

We recommend replacing your filter every 60 to 90 days. However, if you have pets, allergies, or live in a dusty environment, consider changing it every 30–60 days for optimal air quality and HVAC performance.

3. Will a 10x18x1 filter fit my HVAC or furnace system?

This size is designed to fit systems that require a 10x18x1 filter slot. Always check your existing filter’s size label or measure your current filter to confirm compatibility.

4. Are Filterbuy’s MERV 8 filters made in the USA?

Yes. Every Filterbuy air filter is proudly manufactured in the USA using high-quality materials and shipped directly from our facility to ensure fast delivery and consistent quality.

5. Can MERV 8 filters help reduce energy bills?

Absolutely. A clean MERV 8 filter allows your HVAC system to operate efficiently by reducing airflow resistance. According to the U.S. Department of Energy, replacing dirty filters can lower energy use by up to 15%.

Upgrade Your Air Quality with the Right Filter Today

Choose the best 10x18x1 MERV 8 HVAC & furnace air filters from Filterbuy to maintain cleaner air and efficient system performance in your home. Shop now to experience a dependable, high-quality solution designed to keep your indoor environment healthier year-round.