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Actual Size: 17.38x23.38x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.38x23.38x0.75"
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months





Actual Size: 17.38x23.38x0.75"
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: 17.38x23.38x0.75" in → 18x24x1 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
Comparable to:FPR: 10
MPR: 1900-2800
Dust & Debris
Dust Mites & Particles
Pollen
Mold
Lint
Dander
Smoke & Smog
Odors
































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 | 18 x 24 x 1 inches |
| Actual Size | 17.38 x 23.38 x 0.75" inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13, Carbon |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
From years of helping thousands of homeowners breathe easier, we know that the right air filter does more than just trap dust — it protects your family’s health and saves you money long-term. That’s why our 18x24x1 MERV 13 HVAC & furnace air filters at Filterbuy.com are crafted to capture up to 98% of airborne particles others miss — including pollen, smoke, pet dander, and microscopic allergens.
Unlike mass-produced filters, every Filterbuy filter is proudly made in the USA, tested to meet strict performance standards, and shipped directly from our facility to your doorstep. Based on what we’ve seen in real homes, upgrading to a high-efficiency filter like ours can help your HVAC run smoother, last longer, and keep your indoor air healthier, season after season.
1️⃣ Breathe Cleaner
MERV 13 filters trap up to 98% of dust and allergens.
2️⃣ Save Money
Better filters cut energy bills and protect your HVAC.
3️⃣ Trusted & Proven
Backed by EPA, ALA, DOE — plus years of Filterbuy experience.
4️⃣ Fast Delivery
Made in the USA. Shipped to your door, hassle-free.
5️⃣ Stay Protected
Easy ordering. Auto-Delivery keeps you covered year-round.
When it comes to your home’s air quality, not all filters are created equal. Filterbuy’s 18x24x1 MERV 13 HVAC and furnace air filters are engineered to capture up to 98% of airborne particles — including pollen, pet dander, mold spores, fine dust, and smoke — without restricting airflow. This means cleaner air for your family and better performance for your HVAC system.
Our filters are made in the USA with high-quality pleated material that lasts up to three months, giving you better filtration and more value with every replacement. Many homeowners who switch to MERV 13 notice fewer allergy symptoms, less dust buildup, and lower maintenance costs over time.
Ordering from Filterbuy.com means you get fresh, factory-direct filters shipped straight to your door on your schedule. Whether you need a single pack or bulk quantities, it’s simple to keep your home’s air fresh, safe, and energy-efficient year-round.

“After working with thousands of homeowners nationwide, we’ve seen first-hand how upgrading to a high-efficiency MERV 13 filter can make a noticeable difference — not just in cleaner air, but in fewer allergy flare-ups, lower energy bills, and longer HVAC lifespan. At Filterbuy, we build every filter to perform reliably in real homes like yours — because your family’s health and comfort deserve nothing less.”
At Filterbuy, we see it every day: most homes have hidden air quality issues. Here’s why the right filter matters — backed by real data and our experience.
1️⃣ Indoor Air = 2–5× Dirtier
Many families don’t realize their indoor air can be worse than outside.
EPA: Indoor air is often 2 to 5 times more polluted than outdoor air.
Our MERV 13 filters trap tiny particles that ordinary filters miss.
2️⃣ Fewer Allergens at Home
We hear it from customers: better filters mean fewer sniffles.
American Lung Association: High-efficiency filters remove up to 85% of allergens like pollen, mold, and dust mites.
We design our filters for families with allergies and asthma.
3️⃣ Save Energy & Money
Dirty filters cost you more. We see it all the time.
DOE: Replacing filters can cut HVAC energy use by up to 15%.
Cleaner filters = lower bills and longer system life.
Bottom line: Trusted research — and our own experience — show that Filterbuy MERV 13 filters protect your air, health, and wallet.
At Filterbuy, we believe clean air is a must, not a luxury.
Here’s what we’ve learned after years in real homes:
1️⃣ The right filter matters.
A MERV 13 filter means healthier air and fewer allergy days.
Better filters help your HVAC run longer and smoother.
2️⃣ Cheap filters cost more later.
Skimping on filters can mean:
More dust and allergens
Higher energy bills
More repairs and breakdowns
3️⃣ Real families see real results.
We hear it daily: customers notice cleaner air fast.
Less dust, fresher rooms, better peace of mind.
Our opinion: Don’t settle for the cheapest filter. Invest in quality you can feel in every breath — and trust Filterbuy to deliver it to your door, hassle-free.
Ready to upgrade your air? Here’s how:
1️⃣ Pick Your Pack
Choose the right quantity.
Single or bulk — your call.
Swap filters every 90 days.
Set a reminder or use Auto-Delivery.
3️⃣ Order from Filterbuy.com
Fast, free shipping.
Made in the USA.
Backed by our satisfaction guarantee.
4️⃣ Breathe Better, Save More
Enjoy cleaner air, fewer allergies, and lower bills.
Order Now — and feel the Filterbuy difference!
MERV (Minimum Efficiency Reporting Value) rates how well a filter traps tiny particles.
A MERV 13 filter captures up to 98% of airborne particles — including pollen, pet dander, dust, smoke, and mold spores.
For best results, replace every 90 days.
Homes with pets, allergies, or heavy HVAC use may benefit from more frequent changes.
No — Filterbuy’s MERV 13 filters are designed to balance high filtration with proper airflow.
Just make sure your system is compatible with MERV 13 (most modern residential HVAC systems are).
Yes! Every Filterbuy filter is proudly made in the USA in our facilities.
This ensures quality, consistency, and fast shipping straight to your door.
Absolutely. Filterbuy offers Auto-Delivery so you never forget to replace your filter.
Save time and protect your home year-round without the hassle.