Does the HEPA filter really capture 0.1-micron particles?

The HEPA layer is rated to capture 99.97% of particles as small as 0.1 microns, including dust, pollen and pet dander. That is finer than the 0.3-micron standard most HEPA filters are tested against.

What does the UV-C light actually do?

It is aimed at reducing airborne bacteria, viruses and mold spores, and the maker tested it against Staphylococcus Albus, E. coli, Aspergillus Niger and Phi-X174. It supplements filtration rather than replacing it.

How big a room will it handle?

It is rated for rooms up to 150 square feet, so a bedroom, office or small living room. Larger or open-plan spaces need a bigger unit or more than one purifier.

How often do the filters need changing?

The filter change indicator tells you when to replace it; most owners swap the HEPA and charcoal filter every six to eight months with regular use. The UV-C bulb typically lasts about a year.

Is it quiet enough to sleep next to?

On low speed it runs ultra-quiet and most owners keep it in bedrooms overnight. Medium and high are noticeably louder, so run those while you are out of the room.

Does it remove odors as well as particles?

Yes. The activated charcoal layer is there for odors from cooking, pets and smoke, while the HEPA layer handles particles.

GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA

Best price now

$137.05at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA

Best price now

$137.05at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $137.05 at Walmart on Nov 10.

Our take on the GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA

The GermGuardian AC4900CA is a 22-inch tower air purifier that combines a HEPA filter, an activated charcoal layer and a UV-C lamp. It is rated for rooms up to 150 square feet, so it suits bedrooms, offices and small living areas rather than open-plan spaces. The three-speed fan has a low setting meant to run quietly overnight, and a filter change indicator takes the guesswork out of maintenance. Against larger tower purifiers it trades room coverage for a slim footprint and a lower upfront outlay; owners rate it well overall, though some find the higher speeds loud and the replacement filters a recurring cost.

Best forBedrooms and small offices up to 150 sq. ft.Allergy sufferers wanting HEPA plus odor controlBuyers who want UV-C treatment in a slim towerLight sleepers who will run it on low overnight

Pros

True HEPA layer captures 99.97% of particles down to 0.1 microns
Charcoal layer reduces cooking, pet and smoke odors
UV-C lamp targets airborne bacteria, viruses and mold spores
Three speeds with an ultra-quiet low setting
Filter change indicator shows when to swap the filter
Slim 22-inch tower fits tight corners

Cons

Covers only up to 150 sq. ft., small for a tower
Medium and high speeds are noticeably loud
UV-C bulb and replacement filters add ongoing cost
No air quality sensor or auto mode
UV-C output is modest compared with dedicated sanitizers

GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA prices at every store

WalmartNew
In stockSold by Variable ServicesReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$137.05Free shippingChecked Nov 10
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What reviewers say

4.5 / 578 ratings

Owners rate the AC4900CA highly, praising its effect on dust, pollen and pet odors in small rooms and its quiet low setting. Complaints center on noise at higher speeds and the cost of replacement filters and UV bulbs.

What people mention

NoiseMixedOwners find the low speed nearly silent but say the higher speeds are loud enough to notice in a bedroom.
FiltrationPraisedReviewers report less dust, pollen and pet dander in small rooms after running it.
Odor controlPraisedThe charcoal layer is credited with cutting cooking and pet smells.
Filter costCriticisedOwners say replacement filters and UV bulbs are a recurring expense.
CoverageMixedIt works well in bedrooms and offices but is seen as too small for large open rooms.
SetupPraisedBuyers describe unboxing, filter installation and daily use as straightforward.

About the GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA

The GermGuardian AC4900CA is a 4-in-1 tower air purifier that stands 22 inches tall. It combines a HEPA filter, a charcoal filter and UV-C light to clean indoor air. It is lightweight and made for rooms up to 150 sq. ft.

The HEPA filter captures 99.97% of dust and allergens as small as 0.1 microns. The charcoal filter reduces odors. UV-C light helps reduce airborne bacteria, viruses and mold spores, and works to reduce volatile organic compounds.

It has 3 fan speeds, including a low speed that runs ultra-quiet. A UV-C control lets you manage the UV-C light, and a filter change indicator shows when the filter needs to be changed.

Type: 4-in-1 portable tower air purifier
Color: Black
Height: 22 inches
Filtration: HEPA filter, charcoal filter, UV-C light
HEPA performance: Captures 99.97% of dust and allergens as small as 0.1 microns
Room size: Up to 150 sq. ft.
Fan speeds: 3, including an ultra-quiet low speed
Controls: UV-C control, filter change indicator
Tested with: Staphylococcus Albus, Escherichia Coli, Aspergillus Niger, Phi-X174

Specifications

color: BlackSource
size: 22" TowerSource

Questions and answers

Does the HEPA filter really capture 0.1-micron particles?: The HEPA layer is rated to capture 99.97% of particles as small as 0.1 microns, including dust, pollen and pet dander. That is finer than the 0.3-micron standard most HEPA filters are tested against.
What does the UV-C light actually do?: It is aimed at reducing airborne bacteria, viruses and mold spores, and the maker tested it against Staphylococcus Albus, E. coli, Aspergillus Niger and Phi-X174. It supplements filtration rather than replacing it.
How big a room will it handle?: It is rated for rooms up to 150 square feet, so a bedroom, office or small living room. Larger or open-plan spaces need a bigger unit or more than one purifier.
How often do the filters need changing?: The filter change indicator tells you when to replace it; most owners swap the HEPA and charcoal filter every six to eight months with regular use. The UV-C bulb typically lasts about a year.
Is it quiet enough to sleep next to?: On low speed it runs ultra-quiet and most owners keep it in bedrooms overnight. Medium and high are noticeably louder, so run those while you are out of the room.
Does it remove odors as well as particles?: Yes. The activated charcoal layer is there for odors from cooking, pets and smoke, while the HEPA layer handles particles.
Where is the GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA cheapest?: At Walmart, for $137.05, as of our latest check.
What do buyers say about the GermGuardian Air Purifier with HEPA Filter, UV-C, AC4900CA?: Rated 4.5 out of 5 from 78 ratings.