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Filterbuy 18x36x1 Air Filter MERV 11 Allergy Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
Key item features
- UNIVERSAL COMPATIBILITY: 18x36x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 17.50" x 35.50" x 0.75")
- MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
- LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for optimal performance)
- SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
- MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes
Specs
- Air filter size18 x 36 x 1
- Minimum efficiency reporting values (merv)11
- BrandFilterbuy
- FeaturesElectrostatic
- Microparticle performance rating1200
- Thickness1 in
Current price is USD$81.99
Price when purchased online
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4.586409190906869 stars out of 5, based on 4091 seller reviews(4.6)4091 seller reviews
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About this item
Product details
The Filterbuy replacement air filter 18x36x1 (actual size: 17.50" x 35.50" x 0.75") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 11 synthetic media (comparable with Micro Allergen Defense MPR 1200 & FPR 7) is recommended if you have pets or allergies with its capability to trap 95% of dust particles while protecting your home or business from smoke, smog, lint, pollen, mold, dander, and other forms of debris without impacting air flow. High quality construction features an electrostatically charged design with 14 pleats per foot that captures more harmful particles and prolongs the products lifespan by three times that of fiberglass models (replace every 90 days for best results). Plus, our industrial grade beverage board frames are paired with dual wire backings that significantly outperform traditional cardboard compositions by improving structural integrity with their ability to endure temperatures up to 200 degrees Fahrenheit and withstand exposure to moisture. Installation is also made simple with the addition of easy-to-understand arrows that help identify the direction of air flow and subsequently the way the filter needs to be placed. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.
- UNIVERSAL COMPATIBILITY: 18x36x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 17.50" x 35.50" x 0.75")
- MERV 11 PERFORMANCE: Protect your home or business from allergens, pets, and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
- LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for optimal performance)
- SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
- MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes
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Specifications
Air filter size
18 x 36 x 1
Minimum efficiency reporting values (merv)
11
Brand
Filterbuy
Features
Electrostatic
Warranty
Warranty information
Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues.
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Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Customer ratings & reviews
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Showing 1-3 of 11 reviews
Mar 21, 2020
Walmart customer
5 out of 5 stars review
MERV 11/GOLD A/C Filters
Rec'd. my pack of 4 filters and immediately noticed the quality of the material. These are NOT your typical see through filters; they are well constructed and should give the almost 3 month use before replacement, unlike the typical 30 day ones. Very pleased with my purchase and the product!
Review from Filterbuy
Helpful?5XHED7MAXSPW334930508
Jul 24, 2025
Walmart customer
5 out of 5 stars review
Yes, the right tool for cleaning your air
I have used this product for years. The best way to stay healthy is to breathe fresh clean air.
Review from Filterbuy
Helpful?5XHED7MAXSPW334930508
Jul 28, 2023
Walmart customer
5 out of 5 stars review
Quick, Easy & Great Prices!
Wish I knew about Filterbuy for my previous homes. Website makes it easy to find exactly what you need. Shipment was quick too! I am now ready with all the correct filters for my next scheduled filter change. :-)
Review from Filterbuy
Helpful?5XHED7MAXSPW334930508
