GermGuardian AC5900WCA vs Levoit Core 400S

  • Great for allergies
  • Noise level is a little high, but not too bad
  • Filter can be replaced easily
  • Easy to clean
  • Good for pets
  • Great for large rooms
  • Works well when the filters are clean but not so good when they are bad
  • It is pretty big, but not heavy enough to be difficult
  • Noise level is pretty quite for the amount of air it moves
  • HEPA units seem to be of nice quality, packaged well

Reviews by Topic

Our analysis shows how reviewers feel about different topics. Please note these are not full reviews.

Pollutant Reduction

GermGuardian AC5900WCA
So, so loud
Got this to help with my allergies, freshen room air, and to help with air quality after California fires. The only setting that I can use this on is the lowest setting. It's nice and quiet so that I can have it on while I sleep. Only problem is that I like to come home and open my bedroom window to...
3/5
Picky User
2 years ago
amazon.com
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Levoit Core 400S
I bought a Levoit Core 400S for Mother's Day and just set it up. My mom has been having bad allergies and sometimes has coughing fits, so I thought it could help with that. But apparently our PM2.5 is already very good (5 when I turned it on, then dropped to 1-2 after a while). We don't have any pets and clean the house once a month.
NegativeNegative
6
traditionallyn
reddit.com/r/AirPurifiers
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Air Quality

GermGuardian AC5900WCA
So, so loud
Got this to help with my allergies, freshen room air, and to help with air quality after California fires. The only setting that I can use this on is the lowest setting. It's nice and quiet so that I can have it on while I sleep. Only problem is that I like to come home and open my bedroom window to...
3/5
Picky User
2 years ago
amazon.com
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Levoit Core 400S
I bought a Levoit Core 400S for Mother's Day and just set it up. My mom has been having bad allergies and sometimes has coughing fits, so I thought it could help with that. But apparently our PM2.5 is already very good (5 when I turned it on, then dropped to 1-2 after a while). We don't have any pets and clean the house once a month.
NegativeNegative
6
traditionallyn
reddit.com/r/AirPurifiers
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Allergy Relief

GermGuardian AC5900WCA
Best investment ever
I’m 7 months pregnant and have been plagued by sinus problems including nose bleeds. After one weekend of using this, they’re GONE. My husband is no longer suffering from allergies during the night either. I had no idea it would help so much. We usually sleep with a fan on and this white noise has c...
5/5
Jennifer G.
9 months ago
guardiantechnologies.com
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Levoit Core 400S
Great job for those w. breathing problems
Wife has COPD/Asthma. No, this is not a cureall, but we live in central TX, home of the famous "Texas Allergens" - Nothing cures COPD but she was having some real trouble and this really seemed to help in the bedroom. GOOD - First of course, is the little blurb above. Others. They advertise the fan ...
5/5
John F Bubel
1 year ago
amazon.com
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Effectiveness

GermGuardian AC5900WCA
Best Air Purifier I’ve Ever Used
Ignore the 1 star “it didn’t turn on reviews” and the other 2 star “its too loud review” This is the best air purifier I’ve used over the last 5 years. 3 speeds. Speed 1 is silent, speed 2 only generates enough white noise that sleep is still possible with it in the same room, and speed 3 I only use...
5/5
Blake
4 years ago
amazon.com
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Levoit Core 400S
So far so good!
I have owned this product for less than 24 hours as of this writing. More updates as I have more to say/remember to do them. Also, I will be very verbose, the sort of in-depth information I want when I am researching products over $99 for purchase, so you really know what's going on. Hopefully it he...
5/5
SLM
1 year ago
amazon.com
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Allergens

GermGuardian AC5900WCA
So, so loud
Got this to help with my allergies, freshen room air, and to help with air quality after California fires. The only setting that I can use this on is the lowest setting. It's nice and quiet so that I can have it on while I sleep. Only problem is that I like to come home and open my bedroom window to...
3/5
Picky User
2 years ago
amazon.com
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Levoit Core 400S
Either defective or pointless
I smoked a cigarette and blew it at this and it didn't go up from "5". When I moved it inside, it just blew cigarette smelling air into my room. Right there I knew I was most likely returning this product. The entire time I had it it would just randomly go from 5 to 1... my allergies were the exact ...
2/5
Ryan Wilson
1 year ago
amazon.com
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Filter Replacement

GermGuardian AC5900WCA
Insane maintenance cost for what it does.
It is very noisy but does a solid job. House is slightly less dusty, but we're giving it more time. We don't mind the noise. The replacement filters are absolutely insane at $70. Even the off brand ones are $50. Luckily, the filters are somewhat cleanable and can be reused once or twice.
3/5
MB
2 years ago
amazon.com
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Levoit Core 400S
Lighter than other Levoit large room Air Purifiers BUT be careful of the bottom of this thing.
First off I have two large room Levoit Air Purifiers and I've used them for a few years. They work good when the filters are clean but not so good when they are bad. The lights don't turn off on the so I had to put gaff tape on them for night as it bugs me. The older ones are easy to change filters ...
4/5
Granny Trish
1 year ago
amazon.com
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Ease Of Use

GermGuardian AC5900WCA
youtube
Germ Guardian AC5900 - Hepa Filter with UV-C Light Germ-Virus-Mold Killing Feature
I got this because it has the UVC lamp inside the center, with a titanium dioxide plate which is supposed to actually kill germs and viruses and mold, I'm going to show you where the bulb is real, quick, so I've removed the three screws and this plate just Comes right off and you're supposed to use a cloth and you just pull this bulb straight out of the socket, and then you would replace it and put this back on and replace the screws. I replace the screws.
PositivePositive
Tech Angel
4 months ago
youtube.com
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Levoit Core 400S
Outstanding device, smart app wants too much phone access
The noise level is pretty quite for the amount of air it moves. It is pretty big, but not heavy enough to be difficult to move. Does a great job filtering the air. I liked it so much I bought a second one a few days later for my mom when she complained about her allergies. When you unpack it, make s...
5/5
Jennifer L. Riches
1 year ago
amazon.com
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Noise Level

GermGuardian AC5900WCA
Odd fan settings on this purifier -
There are 3 fan settings. Low (1) - this pulls 1watt - it is very quiet but is it doing anything. The fan is so slow it likely just keeps recirculating the air out of the unit back into the unit. Medium (2) - this pulls 40watts. It is pretty loud High (3) This pulls 64watts - really loud It seems st...
2/5
Reldnam
9 months ago
amazon.com
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Levoit Core 400S
Levoit Core 400S Review - Objective Test Data - Modern Castle
Good Purification Performance: In our tests the 400S reduced airborne particulates by 94.8%. It also improved the PM2
PositivePositive
1 month ago
moderncastle.com
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