GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820
GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820
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GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820

4.5 stars out of 624 reviews
(4.5)|
624 ratings
GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820GermGuardian Air Purifier AC4820 with HEPA Filter Removes Odors Smoke Mold 740 sq ft2 pack GermGuardian Air Purifier AC4820 with HEPA Filter Removes Odors Smoke Mold 740 sq ft
Pack Size:Single

Key item features

  • Advanced Filtration: Features a Genuine HEPA Pure filter capturing 99.97% of airborne particles as small as 0.1 microns, including dust, pollen, pet dander, and mold spores.
  • Odor Reduction: An activated carbon pre-filter traps larger particles and effectively reduces odors from smoking, cooking, and pets.
  • Efficient Airflow: Circulates and filters air in a 743 sq. ft. room every 60 minutes, or a 150 sq. ft. room in 12.5 minutes.
  • Quiet Operation: Offers three speed options, with the lowest setting providing gentle white noise for a restful environment.
  • Certified Performance: Independently tested and certified by ENERGY STAR, CARB, and ETL, ensuring adherence to strict energy efficiency and air quality standards.
  • Genuine Components: Utilizes Genuine Germ Guardian replacement filters (FLT4825 HEPA Filter B) for certified fit and maximum filtration efficacy.
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Current price is $79.99
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Comparison Chart:
Minimum Efficiency Reporting Values (MERV)0GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC48200GermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC15118LEVOIT Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne Particles8LEVOIT Core 200S-P 675 Sq Ft Smart Air Purifier17Homedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,Grey12Honeywell HEPA Air Purifiers for Home, 990 Sq Ft in 1 Hour, Auto Mode, Air Quality Indicator, Reduces Dust, Pollen, Smoke, Odors, Black, HPA180B10ConairPure Portable HEPA Air Purifier, 3 Fan Settings, Sand-Bionaire Desktop True HEPA Air Purifier for Small Rooms up to 345 sq. ft20Homedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium Rooms0Honeywell Air Purifiers for Home, 465 Sq Ft, Tabletop, Reduces Dust, Pollen, Pet Dander, Odors, Compact Allergen Reducer, White HHT270
Contaminants RemovedDustGermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820MoldGermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC151PollenLEVOIT Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne ParticlesSmokeLEVOIT Core 200S-P 675 Sq Ft Smart Air PurifierAllergensHomedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,GreyAllergensHoneywell HEPA Air Purifiers for Home, 990 Sq Ft in 1 Hour, Auto Mode, Air Quality Indicator, Reduces Dust, Pollen, Smoke, Odors, Black, HPA180BDustConairPure Portable HEPA Air Purifier, 3 Fan Settings, SandDustBionaire Desktop True HEPA Air Purifier for Small Rooms up to 345 sq. ftAllergensHomedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium RoomsDustHoneywell Air Purifiers for Home, 465 Sq Ft, Tabletop, Reduces Dust, Pollen, Pet Dander, Odors, Compact Allergen Reducer, White HHT270
Maximum Room Size158 sq ftGermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820-GermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC151-LEVOIT Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne Particles-LEVOIT Core 200S-P 675 Sq Ft Smart Air Purifier-Homedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,Grey-Honeywell HEPA Air Purifiers for Home, 990 Sq Ft in 1 Hour, Auto Mode, Air Quality Indicator, Reduces Dust, Pollen, Smoke, Odors, Black, HPA180B-ConairPure Portable HEPA Air Purifier, 3 Fan Settings, Sand-Bionaire Desktop True HEPA Air Purifier for Small Rooms up to 345 sq. ft-Homedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium Rooms100 sq ftHoneywell Air Purifiers for Home, 465 Sq Ft, Tabletop, Reduces Dust, Pollen, Pet Dander, Odors, Compact Allergen Reducer, White HHT270
FeaturesFilter Change IndicatorGermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820Filter Change IndicatorGermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC151Variable SpeedLEVOIT Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne ParticlesAutomatic Shut-OffLEVOIT Core 200S-P 675 Sq Ft Smart Air PurifierFilter Change IndicatorHomedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,GreyFilter Change IndicatorHoneywell HEPA Air Purifiers for Home, 990 Sq Ft in 1 Hour, Auto Mode, Air Quality Indicator, Reduces Dust, Pollen, Smoke, Odors, Black, HPA180BVariable SpeedConairPure Portable HEPA Air Purifier, 3 Fan Settings, SandFilter Change IndicatorBionaire Desktop True HEPA Air Purifier for Small Rooms up to 345 sq. ftFilter Change IndicatorHomedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium RoomsFilter Change IndicatorHoneywell Air Purifiers for Home, 465 Sq Ft, Tabletop, Reduces Dust, Pollen, Pet Dander, Odors, Compact Allergen Reducer, White HHT270
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Customer ratings & reviews

4.5 out of 5 stars
stars624 ratings215 reviews
How item rating is calculated
  1. 5 stars78% (487)
  2. 4 stars8% (52)
  3. 3 stars5% (29)
  4. 2 stars2% (12)
  5. 1 star7% (44)

Reviews summary

Pros
  • : Operates quietly during rest.
  • : Provides odor-free air in surroundings.
  • : Made with high-quality materials.
  • : Has a visually appealing design.
  • : Effectively removes unpleasant smells from the air.
Neutral
  • : Can be quiet on low settings, but may produce high-pitched noise at higher levels.
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Showing 1-3 of 215 reviews

Jan 18, 2025
anna
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I already had two of these. during the wildfires from Eaton and Pacific Palisades I bought another one. I can't say enough about this air purifier. the air in your house smells clean instantly. plus it's low profile which I appreciate. I have two other brand air purifiers that are so huge they are an eyesore. I will stick with this one every time it's on sale

Helpful?0XHM9FFN1QRD399196436
Oct 11, 2025
brittany
Item details
Multipack quantity: 1
Sold byHome StoreDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Best air purifier for cat owner - hands down!

Best HEPA air purifier I've ever used, hands down. I only have 1 cat, but have multiple litter boxes around the house for her. I've bought different HEPA air purifiers over the years looking for one that will be good for the air quality and will cut down on kitty litter dust and scent in the room where her litter boxes are. Most HEPA purifiers will cut down on kitty litter dust really well, but I've never found one that actually takes away the kitty litter smell from the room. I clean her litter multiple times a week, but you can still generally tell that there is a litter box in the room. This is the first air purifier I've used that actually makes the room smell like there isn't a litter box in the room. This obviously doesn't apply to when the litter box needs to be cleaned, but with my regular sifting routine, I can step into the room with one of her litter boxes and it usually smells just like a room that doesn't have a litter box in it. I also like how it's small and pretty slim. It's really powerful and pretty quiet for such a small air purifier. As long as it's in a room that's around the recommended room size for the machine, this little guy is the best.

Helpful?0XHM9FFN1QRD399196436
Nov 18, 2025
Gloves
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Works well

My son has asthma and allergies so I bought one for his bedroom. I liked it so much I bought one for my bedroom as well. At the highest setting, it does have a noticeable sound. However, I got rid of my white noise machine as it this provided a pleasant background sound for sleeping.

Helpful?0XHM9FFN1QRD399196436

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GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820 $79.99

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