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Actual Size: 17.5x19.5x.75"
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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: 17.5x19.5x.75"
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 17.5x19.5x.75"
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: 17.5x19.5x.75" in → 18x20x1 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
Comparable to:FPR: 10
MPR: 1900-2800
Dust & DebrisDust Mites & ParticlesPollenMoldLintDanderSmoke & 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 20 x 1 inches |
| Actual Size | 17.5 x 19.5 x .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 |
We’ve tested thousands of filters—because clean air isn’t one-size-fits-all. At Filterbuy.com, we know from experience that standard HVAC filters often fall short when it comes to stubborn, everyday odors. That’s why we designed our 18x20x1 Odor Eliminator Pleated Air Filter to do more than just trap dust. Backed by lab-tested activated carbon technology and real feedback from homeowners like you, this filter targets smoke, pet smells, kitchen fumes, and musty air at the molecular level, without sacrificing airflow or system efficiency. Unlike off-the-shelf options, ours is crafted with Filterbuy’s proprietary multi-layer pleating and tight-fit design for long-lasting odor control you can trust. If you’ve ever said, “I just want my house to smell clean again,” this filter was made for you.
Odor Removal: Activated carbon traps pet, smoke, and kitchen odors effectively.
Efficient Airflow: Pleated design filters without straining your HVAC or furnace.
Backed by Data: EPA and CDC support the tech behind our filter performance.
Made in the USA: Durable, moisture-resistant, and built to last.
Hassle-Free Purchase: Bulk packs, free shipping, and auto-delivery are available.
When it comes to improving indoor air quality, especially in homes affected by pets, cooking smells, smoke, or seasonal mustiness, Filterbuy’s 18x20x1 Odor Eliminator Pleated Air Filter offers a smart and effective solution. Engineered with advanced activated carbon integrated into high-efficiency pleats, this filter captures not just dust and allergens, but also neutralizes stubborn household odors before they recirculate.
Built to meet or exceed industry MERV ratings without restricting airflow, each filter is proudly made in the USA using durable, moisture-resistant frames and electrostatically charged synthetic media that traps particles down to 3 microns. This means cleaner, fresher air for your family—and less strain on your HVAC or furnace system.
Whether you’re replacing filters quarterly or customizing your air quality setup, Filterbuy makes it easy to order direct, save with bulk packs, and get fast, free shipping—all with customer support that stands behind every filter we ship.
“We developed the 18x20x1 Odor Eliminator Pleated Filter after hearing the same concern from thousands of homeowners: ‘My house is clean, but it still doesn’t smell clean.’ By combining our years of filtration engineering with real-world feedback, we created a filter that goes beyond dust capture—it actively neutralizes odors at the source. Our customers don’t just notice cleaner air—they feel the difference.”
We design our filters based on real-world air quality challenges—and the numbers support why that matters:
1. Indoor Air Can Be Dirtier Than Outdoor Air
According to the EPA, indoor air is often 2–5x more polluted than outside air.
In extreme cases, it can be up to 100x more contaminated.
Source: EPA.gov
➡️ Filterbuy’s Take: We’ve seen this firsthand in homes with poor ventilation or substandard filters. That’s why our filters are built to trap more than just dust—they tackle air quality at its source.
2. Activated Carbon Neutralizes Odors Effectively
The EPA confirms activated carbon is key to gas-phase filtration.
It removes odors, smoke, and VOCs (volatile organic compounds).
Source: EPA.gov
➡️ Filterbuy’s Take: Not all carbon filters are effective. Ours are lab-tested and formulated for residential HVAC systems—ensuring they eliminate odors without compromising airflow.
3. Particle Capture Without Airflow Loss
The CDC states that HEPA filters trap 99.97% of particles as small as 0.3 microns.
While our 18x20x1 filter isn’t HEPA, it’s inspired by similar engineering principles.
Source: CDC.gov
➡️ Filterbuy’s Take: Our pleated design balances airflow and filtration. You get cleaner air—without putting strain on your HVAC or furnace.
Cleaner air isn't just a luxury—it’s a health essential. And the right filter makes all the difference.
Why This Filter Stands Out
Built with activated carbon to eliminate odors.
Features pleated design for maximum airflow and particle capture.
Designed in response to real homeowner concerns, not just specs on paper.
What We've Learned Firsthand
Many customers don't realize how much their filter affects air quality—until they switch.
A standard fiberglass filter may trap large debris, but it won’t tackle odors or finer particles.
Based on our experience: the homes that feel fresher, smell better, and breathe easier all have one thing in common—a high-performance odor-eliminating filter.
Our Honest Take
If you want more than just “clean enough,” upgrade your filter.
The 18x20x1 Odor Eliminator isn’t just HVAC maintenance—it’s a quality-of-life improvement.
Your air should work for you—not against you.
1. Check Your Filter Size
Confirm your filter is 18x20x1 for the correct fit.
2. Pick Your Pack
Choose single or bulk packs for better value.
Consider multi-packs for easy quarterly replacement.
Add to cart.
Enjoy fast, free shipping to your door.
4. Set a Reminder
Replace every 90 days.
Use auto-delivery to never forget.
5. Install & Enjoy
Swap the filter.
Run your HVAC.
Breathe fresher, cleaner air instantly.
Pro Tip: Sign up for Filterbuy emails for expert tips, filter reminders, and exclusive offers.
Our 18x20x1 Odor Eliminator Filter features an activated carbon layer that absorbs odors like pet smells, smoke, and cooking fumes—something standard filters can’t do. It also uses a pleated, electrostatically charged media to trap fine particles, improving both air freshness and indoor air quality.
Yes. While primarily designed for odor control, this filter also captures allergens like dust, pollen, and dander. Its pleated construction offers more surface area for trapping particles, which can help allergy sufferers breathe easier.
For optimal performance, replace your filter every 90 days. Homes with pets, smokers, or allergy-prone individuals may benefit from changing it every 60 days.
Absolutely. Our 18x20x1 filter is designed to work in residential HVAC units, central air systems, and most standard home furnaces that accept this size. Always double-check your system’s required filter dimensions before ordering.
Yes! You can choose auto-delivery to get fresh filters on your schedule. We also offer multi-pack options at a discount, making it easy to stock up and save.
