Hero image 0 of PuroAir 400 Replacement Filter - HEPA Air Filter for PuroAir 400 Air Purifier, 0 of 9
PuroAir 400 Replacement Filter - HEPA Air Filter for PuroAir 400 Air Purifier
Key item features
- Genuine Filtration: These PuroAir HEPA air filters are specifically designed for the PuroAir 400 Air Purifier and are tested to filter 99.9% of common household pollutants.
- Powerful System: The filters feature a 3-layer filtration system, including a pre-filter, HEPA filter, and activated carbon, to capture dust, pollen, smoke, pet dander, allergens, and VOCs.
- Microscopic Particle: Capable of filtering particles up to 700 times smaller than the size of a human hair, enhancing air purity.
- CarbonTech Layer: Each HEPA filter incorporates an exclusive CarbonTech layer, a proprietary blend of activated carbon for effective odor and VOC filtration.
- Easy Installation: Designed for quick and hassle-free replacement, ensuring optimal air purification with user-friendly instructions.
- Durable Construction: Crafted from premium materials, these filters offer durability and reliability for consistent performance over time.
Generated by AI
Specs
- Works withPuroAir 400 Air Purifiers
- Microparticle performance rating0.1
- Height16.85 in
- Thickness1 in
- FeaturesElectrostatic
- ModelPA400
Reviews summary
Pros
- : Captures significant amounts of dust.
- : Captures unwanted smells and particles from the air.
- : Reduces allergy symptoms and related issues.
- : Captures pet hair and other particles from the air.
Cons
- : Product dimensions may not match expected measurements.
Generated by AI
Current price is USD$64.99
Price when purchased online
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Columbus, 43215
Arrives by Mon, Feb 2
Sold by PuroAir|Pro Seller
Fulfilled by Walmart
4.4772727272727275 stars out of 5, based on 88 seller reviews(4.5)88 seller reviews
Free 90-day returns
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About this item
Product details
Introducing the PuroAir 400 Replacement Filters, essential for maintaining the peak performance of your PuroAir 400 air purifier. Crafted to the highest standards and designed with precision, these filters ensure your indoor air remains clean and free of harmful particles. (Based on independent testing in an ISO 17025 certified lab.)
Crafted from premium materials, these filters are built to last, offering durability and reliability you can trust. Their high-quality construction ensures maximum filtration efficiency, delivering consistent performance over time.
Replacing your air purifier's filters is quick and hassle-free with the PuroAir 400 Replacement Filters. Designed for easy installation, simply follow the user-friendly instructions to maintain optimal air purification in your space.
Regular filter replacement is crucial for maintaining the effectiveness of your air purifier and prolonging its lifespan. With the PuroAir 400 Replacement Filters, you can rest assured knowing that your air purifier is operating at its best, providing you with clean, fresh air day in and day out.
Don't compromise on air quality – invest in the PuroAir 400 Replacement Filters and experience the difference they make in your indoor environment. Breathe easier, live healthier, and enjoy peace of mind knowing that your air purifier is equipped with top-of-the-line filtration technology.
- GENUINE PUROAIR HEPA FILTER: PuroAir HEPA air filters are proven to filter the pollutants lurking in your home’s air. These PuroAir 400 replacement filters fit your air purifier perfectly and are rigorously tested to filter 99.9% of common household pollutants.* Breathe clean, crisp air and kiss your allergies goodbye! (Based on independent testing in an ISO 17025 certified lab, 2024)
- POWERFUL AIR FILTER: PuroAir air purifier replacement filters feature a powerful 3-layer filtration system—a pre-filter, HEPA filter, and activated carbon—that filter up to 99.9% of pollutants, including dust, pollen, smoke, pet dander, allergens, and VOCs.* PuroAir HEPA filter replacements can filter particles down to 700X smaller than the size of a human hair. (Filtration data is based on filter performance standards and independent testing on inanimate particles in an ISO 17025 laboratory. Results may vary, 2024)
- BACKED BY SCIENCE: Lab tested to filter the most common household pollutants with ease. Better filtration means improved allergy symptoms and improved sleep quality.* (Based on SleepScore independent lab testing. Filtration data is based on filter performance standards and independent testing on inanimate particles in an ISO 17025 laboratory. Results may vary, 2024)
- POWERED BY CARBONTECH: Each PuroAir HEPA filter features our exclusive CarbonTech layer, made from a proprietary blend of activated carbon for odor and VOC filtration. (Based on independent testing in an ISO 17025 certified lab, 2024)
- 100 DAY CLEAN AIR GUARANTEE: We stand by our products and their performance, which is why 500,000+ families trust PuroAir to keep their air clean. Have a problem? Our team is here to make it right! Proudly based in the USA.
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Specifications
Works with
PuroAir 400 Air Purifiers
Compatible models
PuroAir 400 Air Purifiers
Microparticle performance rating
0.1
Contaminants removed
Allergens, Dust, Dust Mites, Odor, Pet Dander, Pollen, Smoke, Volatile Organic Compounds (VOCs)
Warranty
Warranty information
100 Day Clean Air Guarantee
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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
How item rating is calculated
Reviews summary
Pros
- : Captures significant amounts of dust.
- : Captures unwanted smells and particles from the air.
- : Reduces allergy symptoms and related issues.
- : Captures pet hair and other particles from the air.
Cons
- : Product dimensions may not match expected measurements.
Generated by AI
Customer images
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Showing 1-3 of 97 reviews
Jan 5, 2026
Cynthia
Item details
Sold byPuroAirDelivered byWalmartCount: 1
5 out of 5 stars review
Verified Purchase
The only filter I use!
The Puroair filter is excellent. It grabs and holds dust, dander and other contaminants that would otherwise end up in our lungs. The air in the room feels and smells fresh. It's hard to explain but the house just feels cleaner and safer. I have 3 of these Puroair purifiers and only use their filters. They are the best. They help prevent respiratory problems.
Incentivized Review
Helpful?67DTY3BSJYBR9121971136
Jan 7, 2026
Grover
Item details
Sold byPuroAirDelivered byWalmartCount: 2
5 out of 5 stars review
Verified Purchase
worth the cost. does a great job of cleaning the air in my downtown apt where the air can get quite dirty. eliminates smoke and cooking odors quickly.
Incentivized Review
Helpful?67DTY3BSJYBR9121971136
Aug 20, 2025
Norma B.
5 out of 5 stars review
Living in Arizona I suffer
Living in Arizona I suffer with terrible allergies and was doubtful any air purifier would help much but I was despaired to try one more…this has helped so much! Has no “cured” my allergies but I feel the difference and I see the difference as it cut down on dust in the house. Thank you!
Incentivized Review
Review from puroairpurifiers.myshopify.com
Helpful?67DTY3BSJYBR9121971136
