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

1,063 ratings
GERMGUARDIAN 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820GERMGUARDIAN 743 Sq ft Tower Air Purifier with HEPA Pure Filter Gray AC48202 pack GERMGUARDIAN 743 Sq ft Tower Air Purifier with HEPA Pure Filter Gray AC4820
Pack SizeSingle

Key item features

  • Pure HEPA Filtration: True HEPA filter captures 99.97% of smoke, dust, pollen, and pet dander as small as 0.1 microns, effectively reducing allergy and asthma triggers.
  • Effective Odor Control: Activated carbon pre-filter traps larger particles and absorbs volatile organic compounds, significantly reducing odors from smoking, cooking, and pets.
  • Broad Room Coverage: Cleans air in rooms up to 743 sq. ft. per hour (153 sq. ft. in 12.5 minutes), ideal for large bedrooms and living rooms.
  • Whisper Quiet Operation: Three speed settings, with the lowest providing gentle white noise, ensuring a quiet and restful environment for sleep.
  • Genuine Filter Compatibility: Requires GermGuardian HEPA Filter B (FLT4825 series) and carbon filter FLT22CB4 for certified fit and optimal performance.
  • Verified Air Purity: The 22" AC4820 Tower Air Purifier is performance verified to filter 0.1 micron particles, trusted since 2005, and CARB/ETL certified.
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Specs

Filter type, HEPA, Activated CarbonCoverage area, 743 sq ftClean air delivery rate, 99 CFMContaminants removed, Dust, Odor, Pet Dander, Pollen, Smoke, Volatile Organic Compounds (VOCs)Microparticle performance rating, 0.1Brand, GERMGUARDIAN

About this item

Product details

Purify your space with confidence. The GermGuardian AC4820 22" Tower Air Purifier circulates and cleans the air in rooms up to 743 sq. ft. per hour, making it an ideal large room air purifier for bedrooms, living rooms, and open spaces. Featuring True HEPA Pure protection, it captures 99.97% of dust, smoke, pollen, and pet dander as small as 0.1 microns*, helping reduce allergy and asthma triggers for healthier breathing. With 3 speed settings and whisper-quiet operation, this HEPA filter air purifier doubles as gentle white noise at night, making it one of the best air purifiers for bedrooms. A pre-filter and activated carbon layer trap larger particles and neutralize odors from pets, cooking, and smoke for fresher air. For lasting performance, use only genuine GermGuardian replacements: HEPA Filter B (FLT4825 series) and carbon filter FLT22CB4. Designed and performance-tested, GermGuardian has been trusted since 2005 to deliver cleaner air you can count on. *Initial efficiency value. As small as 0.1 microns from air passing through the filter media.
  • True HEPA Protection: HEPA filter captures 99.97% of smoke, dust, pollen, and pet dander as small as 0.1 microns*, helping reduce allergy and asthma triggers for cleaner, fresher air.
  • Reduces Odors: Activated carbon pre-filter traps dust, pet hair, and other large particles while extending the life of the HEPA filter. Treated carbon absorbs volatile organic compounds from the air and reduces odors from smoking, cooking and pets.
  • Whole Room Coverage: Cleans a 153 sq. ft. room in just 12.5 minutes or up to 743 sq. ft. every hour—ideal for bedrooms, living rooms, and large open areas.
  • Quiet Operation: 3 speed options with the lowest setting being utilized as gentle white noise for a quiet, restful night's sleep
  • Genuine Replacements: Use only GermGuardian filters for certified fit and performance. Compatible with HEPA Filter B (FLT4825, FLT4825SM, FLT4825VO, FLT4850PT) and carbon filter FLT22CB4.
  • Performance Verified: *Initial efficiency value. As small as 0.1 microns from the air passing through the filter media. Trusted since 2005, GermGuardian purifiers are certified by CARB and ETL.
info:
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Specifications

Filter type

HEPA, Activated Carbon

Coverage area

743 sq ft

Clean air delivery rate

99 CFM

Contaminants removed

Dust, Odor, Pet Dander, Pollen, Smoke, Volatile Organic Compounds (VOCs)

Warranty

Warnings

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Customer ratings & reviews

4.5 out of 5 stars
stars
1,063 ratings296 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars79% (836)
  2. 4 stars9% (91)
  3. 3 stars4% (42)
  4. 2 stars2% (23)
  5. 1 star7% (71)

Reviews summary

Pros

  • : The product offers low-cost options for masks and purifiers.
  • : The unit has three speeds, quiet operation and accessible filters.
  • : The unit removes airborne germs and smells.
  • : Improves sleep with constant air filtration.
  • : The unit freshens air in hours and reduces smoke and pet smell.

Neutral

  • : Can be quiet, but may produce high-pitched sounds.
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Showing 1-3 of 296 reviews

Sep 5, 2026
Reviewer name: Alesia
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great air filter!

I bought 2 of these to filter the air while my house was being renovated. They work very well. I like the washable filter. There is a paper filter you have to replace occasionally also. I am very pleased with these filters. They are quiet but powerful. I recommend them.

Helpful?0XHM9FFN1QRD399196436
Aug 6, 2026
Reviewer name: Dominique
Item details
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Love

Love this air purifier especially for the price and the size! Works well in my living room space.

Helpful?0XHM9FFN1QRD399196436
Aug 7, 2026
Reviewer name: Kody
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Good little Home Item

I like it, it works. Simple to use, the air blows out of the side rather than forward blowing, so the draft is a little funky. Have to dust the back here and there. Speed is good, better than I thought.

Helpful?0XHM9FFN1QRD399196436
Current price is $79.99
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