GermGuardian® AC4020CA 3-in-1 Table Top Air Purifier by Guardian Technologies

3-speed control

By germguardian

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Description & Features+

This Table Top Air Cleaning System is more than just a filter, many levels of cleaning help improve your indoor air quality. UV-C light helps fight the growth of bacteria, germs and mold. Also decomposes odour molecules caused by smoking, cooking and pets. UV-C light sanitizes by permanently damaging the DNA of germs.
• Captures Allergens – HEPA captures 99% of pollen, dust mites, pet dander and mold
• Fight Germs – UV-C power kills airborne bacteria, viruses and mold spores
• Reduces odours – Charcoal filter reduces common odours from pets, smoking and cooking
• Compact Size – Fits great in small places
• 3-speed control
• 9 inches
• On/ Off UV-C control
• Filter replacement reminder
• 1-year limited warranty


Available for Shipping to Canada Post
Assembled Height
9 in
Assembled Length
7.25 in
Assembled Weight
3.7 lb
Assembled Width
5.75 in
Clean Air Delivery Rate
Fan Speed Settings
90% plastic, 10% electric
Supplier Warranty Type
1-Year Limited Manufacturers
Product Identifiers
Walmart Item #
Model #

Return Policy+

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You can return this item within 90 days from the day you receive your online order.

There are two easy ways to return this item:

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  • Return this item by mail

From the Manufacturer +

Ratings & Reviews+

GermGuardian® AC4020CA 3-in-1 Table Top Air Purifier by Guardian Technologies is rated 3.8 out of 5 by 6.
Rated 5 out of 5 by from Love it! It made a difference for me during allergy season. If I recall correctly, it is designed for around 200 s.f. My new efficiency is 410 s.f. I am finding one unit enough for my needs. It is great for someone that needs a filter in a small place that is compact and attractive. Serendipitously, another air purifier with similar features arrived without my knowledge and I opened this one first. This one differed as it has a vacuumable HEPA option, extending the life of the HEPA filter, reducing the longterm costs. Given the size and price, I could actually buy two of these for slightly less one of the other, but the other would have covered 2.5 times the space, it was over twice the size for space required, over twice the price, more money to replace HEPAs and ugly as sin. So, yes, I recommend this product. Thank you GermGuardian!
Date published: 2015-10-26
Rated 1 out of 5 by from Disappointing Pulls odors in the back & spews them out the front. Returning it.
Date published: 2016-10-21
Rated 3 out of 5 by from A Tale of Two Guardians or Three I bought the AC4020 for my tiny bathroom, and it fits in a tight space well. But I really can't tell if it's doing anything, because I still have the AC4100 in an adjacent room, and another being delivered tomorrow. If you have space for that one, I'd recommend it over the AC4020, if you don't mind a louder fan. There is an additional reason I prefer the AC4020, and you'll probably get a kick out of this. I use that one for air circulation and air quality, but it doubles for white noise. I live in the city, and the nights get louder all the time. Two of these will do double duty in the bedroom....better than ear plugs! I love the Guardian products. My first one, a floor model, AC4825 I've had about 2 years; when the noise ratcheted up, I discovered it was also a good white noise machine. The AC4100 actually has a better fan than it's larger cousin, the AC4825, but I still use it in other rooms to circulate the air conditioning. It's rated about twice the square footage for air purifying. Overall, I love the products.
Date published: 2017-09-07
Rated 5 out of 5 by from Thought it was hype, the UV really works!! Works great for odors, smoke, vapor, and dust. I purchased an expensive Whirlpool without the UV and all it did was circulate smelly air. This machine really made a difference, a noticeable difference. You won't be disappointed, you'll know its working right away.
Date published: 2017-06-29
Rated 4 out of 5 by from Piece and quiet This unit probably cycles a small room 5-6 times a day, it is reasonably quite. The only thing I don't like is you can't turn off the UV lamp (not a big deal) Good buy for the price.
Date published: 2017-04-08
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