Actual Size: 19.5x35.5x1.75"
3 month filters
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Made in the USA
Ships in 24 hours
Available In MERV Rating: 8, 11, 13
Made in the USA
Ships in 24 hours
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 MERV 8 |  MERV 11 |  MERV 13 | |
|---|---|---|---|
| Best for | Standard Residential/Commercial Healthy Families | Superior Residential/Commercial Allergy Sufferers | Optimal Residential/Commercial Hospital Grade |
| Comparable ratings | MPR 600 & FPR 5 | MPR 1000-1200 & FPR 7 | MPR 1500 - 1900 & FPR 10 |
| Filtration | Captures 90% of Airborne Particles | Captures 95% of Airborne Particles | Captures 98% of Airborne Particles |
| Dust, lint & debris | |||
| Mold, pollen | |||
| Dander, dust mites | |||
| Smoke & Smog | |||
| Bacteria | |||
| Odor, vocs |
Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
Change your filter every
6 weeks
to ensure indoor air quality is at its best.
Change your filter every
2 months
to avoid shedding and odor buildup.
Change your filter every
2-3 months
as having clean air is even more important with children in your home.
At Filterbuy, we've helped thousands of customers tackle persistent odors and allergy triggers with custom-fit carbon air filters. We know what truly works to capture VOCs, neutralize household smells and block airborne irritants like pet dander and pollen. In this guide, we’ll share what most generic options miss: what actually matters when selecting the right filter for long-lasting freshness and relief, and how Filterbuy filters are built to outperform.
A 20x36x2 air filter measures 20 inches by 36 inches by 2 inches and fits HVAC systems with larger return grilles, common in older homes and light commercial buildings. Filterbuy builds this size in pleated and carbon-pleated versions, with the carbon layer trapping odors and VOCs that standard fiberglass filters pass right through.
Key facts:
Nominal size: 20" x 36" x 2" (actual dimensions run slightly under for a proper seal)
MERV options: 8, 11, or 13 depending on filtration needs
Replacement: every 60 to 90 days
Made in the USA with custom sizing available
Pull your current filter and confirm the printed size before ordering, since a half-inch gap lets unfiltered air bypass the media.
Filterbuy 20x36x2 carbon air filter reduces odors and allergens fast.
Activated carbon + pleated media = odor control + allergen capture.
Users notice air quality improvement within 24–48 hours.
Made in the USA and custom-sized for a perfect fit.
Replace every 60 to 90 days for best ongoing performance.
When it comes to improving indoor air quality, not all filters are built to handle both odor elimination and allergen reduction effectively. That’s where Filterbuy 20x36x2 carbon air filters stand out. These air filters are equipped with a modern activated carbon layer, which gives them superior function than merely capturing dust. Air is actively pulled through these filters.
Made in the USA using high-efficiency pleated materials
Larger surface area helps capture more airborne particles
Filterbuy 20x36x2 allergen air filters are custom-made for a precise fit
Designed to last up to three months with consistent performance
In-house testing and customer feedback support reliable results
Fresher air becomes recognizable even in 24 hours
Most effective in the case of homes with animals, smokers or people with allergies
The performance of HVAC is enhanced while the required airflow is also maintained
Filterbuy air filters are designed to offer proven results without compromising the airflow, and whether you are a user who wants to upgrade your HVAC system’s performance or you just want the air to be cleaner.
Filterbuy filters aren’t just built for performance—they’re proven in real homes and businesses.
Improved air quality
Family members' comfort significantly improved
Homes with pet odors and smoke reported fresher air in 24–48 hours.
Allergy-prone customers noticed reduced symptoms after one filter change.
“I have a long-haired dog, but don't want my house to convey that the second you walk in the door. I'm making extra sure the dog doesn't get stinky AND the odor eliminator air filters are making sure the house stays sweet-smelling.” - Teri B.
“I felt a difference in my condo with this filter. I wasn't sneezing or have allergies anymore. Thank you!” - Doris P.
Here’s how proven research lines up with what we see every day at Filterbuy.
Filters based on carbon do a great job of trapping VOCs and odors.
Source: National Institutes of Health
The activated carbon is a very efficient substance that absorbs the whole range of chemicals and gases that other filters simply ignore.
Our carbon-infused pleats are very effective in controlling odors as our in-house testing reveals.
We optimize this process by providing larger surface area for the absorption of VOCs and odors but we do not restrict the airflow.
60 million+ Americans suffer from allergies
The most common triggers are: dust mites and mold spores, pet dander which all come from the indoor environment.
Customers frequently mention a significant decrease in their allergy symptoms within a few days.
Filterbuy pleated carbon filters are designed to trap microscopic allergens and ease symptoms.
Filterbuy doesn’t just follow the science, we build filters that solve real indoor air problems, backed by data and real customer results.
These tips are easy to follow and help your air filters work well all year, keeping your indoor air clean.
Change filters on time
Get a new air filter every 90 days. In case you have pets, suffer from allergies or use the HVAC a lot, then changing the filter should be done even more frequently.
Check filters monthly
Look at your filter once a month. Replace it if it looks dirty or clogged.
Use the right filter size
Make sure the filter fits snugly. Gaps let dirty air pass through.
Keep spare filters ready
Having extras on hand makes timely replacement easy.
Clean your air vents regularly
Dirt build up is prevented by dusting and vacuuming.
Adhere to HVAC rules
Always follow your system’s recommendations for filter type and replacement.
Use auto-delivery if available
Automatic delivery is a great help to maintain consistency without missing your schedule.
All these simple steps contribute to the efficient operation of your HVAC system and the supply of fresh indoor air all year long.
Free, Super Fast Shipping — Sometimes next-day.
Buy packs, get up to 70% off each filter.
These filters actually last for 90 days — way longer than cheap fiberglass versions.
Made right here in the USA with super high quality materials.
Auto Delivery option —save another 5% and you'll never forget to replace your filters again.
Super Easy, Super Affordable.
Don’t settle for generic. Choose a filter built with intention and tested with care. Trust experience—from people who manufacture, test and use these filters every day.
Filterbuy 20x36x2 air filter combines particle filtration and odor control. It traps dust, allergens and airborne particles. It also absorbs odors and harmful gases using an activated carbon layer.
We recommend replacing it every 90 days for best performance. Changing it every 60 days is more effective in homes with pets, smokers or allergy sensitive individuals.
Yes. While the carbon layer targets odors and VOCs, the pleated design in Filterbuy 20x36x2 pleated air filter also captures allergens like dust mites and pet dander.
Not all HVAC use this size. So always measure your current filter or check your HVAC unit’s specifications. Filterbuy offers custom sizing to ensure a perfect fit.
Unlike standard fiberglass, Filterbuy carbon version includes an activated carbon layer that neutralizes odors and VOCs. This makes it ideal for households with strong smells, pets or chemical exposure.
Choose the correct size
Turn off the power supply
Remove the old air filter
Dispose the old product
Insert best 20x36x2 air filter from Filterbuy
Replace the cover
Buy in bulk
Buy directly from trusted online suppliers. Filterbuy.com is a great source. This saves you time. You do not have to search many stores.
Filterbuy.com is your most reliable source. They specialize in a wide variety of air filter sizes, including the best 20x36x2 air filter and offer direct shipping.
Order your custom-fit, USA-made 20x36x2 carbon air filter at Filterbuy.com and start breathing cleaner, fresher air within 48 hours of installation. Add Auto Delivery to save another 5% and keep your home protected without ever missing a replacement.
