Hero image 0 of GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820, 0 of 9
Overall pick
GermGuardian 743 Sq. ft. Tower Air Purifier with HEPA Pure Filter, Gray, AC4820
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.
Generated by AI
Specs
- Coverage area743 sq ft
- Filter typeHEPA, Activated Carbon
- Clean air delivery rate99 CFM
- FeaturesFilter Change Indicator
- Decibel rating55 dB
- ConfigurationTower
Reviews summary
Pros
- : Offers similar quality at a lower cost.
- : Convenient operation with intuitive settings.
- : Improves sleep with constant air filtration.
- : Made with high-quality materials and solid build.
- : Captures and eliminates strong odors and smells from the air.
Neutral
- : Can be quiet, but may produce high-pitched sounds.
Generated by AI
Current price is USD$79.99
Price when purchased online
- Free shipping
Free 90-day returns
Walmart Protection Plan by Allstate
(Only one option can be selected at a time)
How do you want your item?
Plus, get 50% off an annual plan at checkout!
Ships to
Arrives by Today
.Order within 9 hr 55 min
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible
More seller options (1)
Starting from $79.99
Get 50% off a year of Walmart+
Exclusions, T&C apply. Claim offer
Similar items you might like
Based on what customers bought
In 50+ people's carts Winix Air Purifier, C535, 4-Stage Cleaning with 2 Years of Filters. Max Room Capacity 1776 sq ft. $158.00
In 50+ people's carts
Sponsored$15800current price $158.00Winix Air Purifier, C535, 4-Stage Cleaning with 2 Years of Filters. Max Room Capacity 1776 sq ft.
25244.6 out of 5 Stars. 2524 reviewsBionaire True HEPA Air Purifier for Small Rooms Up to 345 sq. ft with 3-Speed, 360° Air Intake, Digital Controls and Removes 99.97% of Airborne Particles - White $68.00
Sponsored$6800current price $68.00Bionaire True HEPA Air Purifier for Small Rooms Up to 345 sq. ft with 3-Speed, 360° Air Intake, Digital Controls and Removes 99.97% of Airborne Particles - White
1574.5 out of 5 Stars. 157 reviewsRollback Shark NeverChange Compact Pro 250 Sq Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP070 Black $99.00 Was $119.00
Rollback
4 optionsAvailable in additional 4 options$9900current price $99.00, Was $119.00$119.00Shark NeverChange Compact Pro 250 Sq Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP070 Black
6324.3 out of 5 Stars. 632 reviewsIn 100+ people's carts Levoit Core 200S-P 675 Sq Ft 3-Stage Filtration Smart Air Purifier, Gray $68.94 Was $89.88
In 100+ people's carts
$6894current price $68.94, Was $89.88$89.88Levoit Core 200S-P 675 Sq Ft 3-Stage Filtration Smart Air Purifier, Gray
19434.6 out of 5 Stars. 1943 reviewsGermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC151 $79.00 $79.00/ca
$7900current price $79.00$79.00/caGermGuardian 1095 Sq. ft. Air Purifier with HEPA Pure Filter and UV-C Light, White, AC151
3404.6 out of 5 Stars. 340 reviewsBest seller DREO HEPA Air Purifier for Room up to 1500 sq.ft/2h, Air Purifier for Allergies and Asthma with PM2.5 Air Quality Display, 3-in-1 Filter Removes 99.97% Pet Hair, 25 dB Sleep Mode $84.00
Best seller
$8400current price $84.00DREO HEPA Air Purifier for Room up to 1500 sq.ft/2h, Air Purifier for Allergies and Asthma with PM2.5 Air Quality Display, 3-in-1 Filter Removes 99.97% Pet Hair, 25 dB Sleep Mode
2414.8 out of 5 Stars. 241 reviewsAir Purifier for Large Bedrooms & Homes 2400 Sq Ft- Quiet 15dB Sleep Mode, Smart App Control, 2 Filters for Pet Hair, Dander, Odor, Smoke & Dust $83.99 Was $119.99
SponsoredNow$8399current price Now $83.99, Was $119.99$119.99You save $36.00You save$36.00Air Purifier for Large Bedrooms & Homes 2400 Sq Ft- Quiet 15dB Sleep Mode, Smart App Control, 2 Filters for Pet Hair, Dander, Odor, Smoke & Dust
54 out of 5 Stars. 5 reviewsSave with
Shipping, arrives tomorrowWINIX A231 Air Purifier for Bedroom Up to 1,180 Ft² in 1 Hr With Air Quality Monitor, True HEPA, Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke, Dust $98.00
Sponsored$9800current price $98.00WINIX A231 Air Purifier for Bedroom Up to 1,180 Ft² in 1 Hr With Air Quality Monitor, True HEPA, Carbon Filter and Auto Mode, Captures Pet Allergies, Smoke, Dust
4684.6 out of 5 Stars. 468 reviewsIn 50+ people's carts Shark Air Purifier 3-in-1, Nanoseal HEPA, Air Purifier, Purified Heat, Purifed Fan, 500 Sqft, HC452 $128.00 Was $149.00
In 50+ people's carts
$12800current price $128.00, Was $149.00$149.00Shark Air Purifier 3-in-1, Nanoseal HEPA, Air Purifier, Purified Heat, Purifed Fan, 500 Sqft, HC452
16954.6 out of 5 Stars. 1695 reviewsBest seller Levoit Core 300-RAC-P 1073 Sq Ft 3-Stage Filtration Living Room and Bedroom Air Purifier, Gray $99.00
Best seller
2 optionsAvailable in additional 2 options$9900current price $99.00Levoit Core 300-RAC-P 1073 Sq Ft 3-Stage Filtration Living Room and Bedroom Air Purifier, Gray
10264.5 out of 5 Stars. 1026 reviewsClearance Honeywell Compact Tabletop Air Purifier for Home, 465 Sq ft, White, Reduces Dust, Pollen, Odors $35.34 Was $53.00
Clearance
$3534current price $35.34, Was $53.00$53.00Honeywell Compact Tabletop Air Purifier for Home, 465 Sq ft, White, Reduces Dust, Pollen, Odors
8054.6 out of 5 Stars. 805 reviewsBest seller Levoit Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne Particles $109.99 Was $149.00
Best seller
$10999current price $109.99, Was $149.00$149.00Levoit Vital 100S-P Smart Air Purifier for Medium Rooms, 3-Stage Filtration for Airborne Particles
2934.5 out of 5 Stars. 293 reviewsFrida Baby 3 in 1 Air Purifier and Sound Machine, HEPA Air Purifier for Allergies, 150 Sq Ft $83.00
$8300current price $83.00Frida Baby 3 in 1 Air Purifier and Sound Machine, HEPA Air Purifier for Allergies, 150 Sq Ft
2334.6 out of 5 Stars. 233 reviewsHomedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,Grey $52.00
$5200current price $52.00Homedics Total-Clean 3-in-1 Air Purifier-360-Degree HEPA Filter for 447 Sq. ft., Activated Carbon, Essential Oil Aromatherapy, AP-T65-GY,Grey
1284.5 out of 5 Stars. 128 reviewsHomedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium Rooms $98.00
$9800current price $98.00Homedics 3-1 Air Purifier, 975 Sq. ft of Coverage/Hour. True HEPA Filtration, Activated Carbon Odor Filter, Pre-filter, Reduces Airborne Allergens, for Medium Rooms
2154.6 out of 5 Stars. 215 reviewsShark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray $168.00 Was $205.00
$16800current price $168.00, Was $205.00$205.00Shark NeverChange 500 St Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP150 Gray
3894.5 out of 5 Stars. 389 reviewsShark MAX 1000 St Ft True HEPA Air Purifier, NanoSeal, Clean Sense IQ Technology, Captures Pet Hair, Pet Dander, Allergens, HP200 White $168.00 Was $248.00
$16800current price $168.00, Was $248.00$248.00Shark MAX 1000 St Ft True HEPA Air Purifier, NanoSeal, Clean Sense IQ Technology, Captures Pet Hair, Pet Dander, Allergens, HP200 White
5834.6 out of 5 Stars. 583 reviewsShark NeverChange MAX 1200 Sq Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP300 Charcoal Gray $248.00 Was $299.00
$24800current price $248.00, Was $299.00$299.00Shark NeverChange MAX 1200 Sq Ft HEPA Air Purifier, 5-Year HEPA-Exceeding Filter, Captures Pollutants, Pet Dander, Dust, and Smoke, HP300 Charcoal Gray
2594.4 out of 5 Stars. 259 reviewsBionaire True HEPA Air Purifier for Medium Rooms Up to 428 sq. ft with 3-Speed, 360° Air Intake and Removes 99.97% of Dust, Smoke & Allergens - White $88.00
$8800current price $88.00Bionaire True HEPA Air Purifier for Medium Rooms Up to 428 sq. ft with 3-Speed, 360° Air Intake and Removes 99.97% of Dust, Smoke & Allergens - White
554.4 out of 5 Stars. 55 reviewsBlueair Mini Max Air Purifier for Bedroom & Small Rooms, HEPASilent Air Cleaner for Pets, Allergies, Smoke & Dust - Limestone $59.00
$5900current price $59.00Blueair Mini Max Air Purifier for Bedroom & Small Rooms, HEPASilent Air Cleaner for Pets, Allergies, Smoke & Dust - Limestone
About this item
Product details
BREATHE FRESH AND CLEANER AIR The Germ Guardian AC4820 air purifier, equipped with Genuine Germ Guardian® HEPA Pure™ filtration technology, effectively captures 99.97% of germs, viruses, and allergens as small as 0.1 microns. Customize your at-home comfort with 3 speed settings and an ultra-quiet mode available at the lowest speed setting. This air purifier circulates the air in a large 743 sq. ft. room every 60 minutes or in a medium 150 sq. ft. room every 12.5 minutes, making it ideal for bedrooms, offices, basements, and other open concept spaces. Designed, engineered, and independently tested in the United States, it exceeds industry standards. Your purifier is only as powerful and effective as the filter you put inside, and our Genuine Germ Guardian replacement parts are essential for maintaining product performance. Each filter or bulb is designed specifically for a particular unit. Not only will genuine replacement parts fit perfectly, but they also match the combination technology of the unit, allowing you to get the most out of your air purifier. This product earned the Energy Star label by meeting strict energy efficiency guidelines set by the EPA. WARRANTY: Germ Guardian offers reassurance with a 5-year limited warranty in addition to your purchase."
- GENUINE HEPA PURE™ FILTRATION: Germ Guardian AC4820 features a Genuine HEPA PURE™ air filter that captures up to 99.97% of harmful germs, dust, pollen, pet dander, mold spores, and other allergens as small as 0.1 microns from the air. With over 140 pleats and 9.0 square feet of filter surface area, our Genuine HEPA PURE™ filtration technology offers certified fit and maximum performance, meeting HEPA tested standards.
- 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.
- CLEAN AIR IN 12.5 MINUTES: Circulate and filter the air in a large 740 sq. ft. room every 60 minutes or in a medium 150 sq. ft. room every 12.5 minutes. To ensure accurate and replicable results in real life conditions, efficacy testing is conducted in 30 cubic meter testing chambers with a HEPA filter installed.
- QUIET OPERATION: Three speed options with the lowest setting being utilized as gentle white noise for a quiet, restful night's sleep
- GENUINE GERM GUARDIAN FILTERS: Search for FLT4825 HEPA Filter B. Genuine Germ Guardian replacement filters for certified fit and maximum filtration. Off-brand filters often fail HEPA testing standards, fit incorrectly, reduce efficacy, and may cause damage to the air purifier.
- INDEPENDENTLY TESTED: Cleaning air since 2005, our Ohio-based team is dedicated to revolutionizing the air purifier industry by creating top-notch air quality products. At Guardian Technologies, our products undergo rigorous scientific testing conducted by reputable, independent laboratories and we exceed industry standards. Germ Guardian air purifiers are ENERGY STAR CERTIFIED, CARB (California Air Resource Board) Certified, ETL Certified and Zero Ozone Verified!
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Coverage area
743 sq ft
Filter type
HEPA, Activated Carbon
Clean air delivery rate
99 CFM
Features
Filter Change Indicator
Warranty
Warranty information
3 year warranty
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
WARNING: This product can expose you to chemicals including lead or lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.State Chemical Disclosure
This product can expose you to chemicals including lead or lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Check out these related products
GermGuardian Air Purifier with HEPA Filter and UV-C Sanitizer, 743 Sq. ft, AC4825DLX, Gray $99.99 Was $115.00
$9999current price $99.99, Was $115.00$115.00GermGuardian Air Purifier with HEPA Filter and UV-C Sanitizer, 743 Sq. ft, AC4825DLX, Gray
7644.6 out of 5 Stars. 764 reviewsGermGuardian 915 Sq. ft. HEPA Pure Tower Air Purifier with UV-C, Gray, AC5000E $139.99
$13999current price $139.99GermGuardian 915 Sq. ft. HEPA Pure Tower Air Purifier with UV-C, Gray, AC5000E
2684.6 out of 5 Stars. 268 reviewsGermGuardian Air Purifier with HEPA Pet Pure Filter, UV-C, Removes Pet Dander, 915 Sq. ft, AC5250PT $151.55
2 optionsAvailable in additional 2 options$15155current price $151.55GermGuardian Air Purifier with HEPA Pet Pure Filter, UV-C, Removes Pet Dander, 915 Sq. ft, AC5250PT
2214.6 out of 5 Stars. 221 reviewsGermGuardian Air Purifier with HEPA Filter, UV-C, Removes Odors, Smoke, Mold, 728 Sq. ft., AC4900CA $140.00
$14000current price $140.00GermGuardian Air Purifier with HEPA Filter, UV-C, Removes Odors, Smoke, Mold, 728 Sq. ft., AC4900CA
394.2 out of 5 Stars. 39 reviewsGermGuardian 743 Sq. ft. HEPA Pet Pure Filter Air Purifier with UV-C, Black, AC4300BPTCA $129.99
$12999current price $129.99GermGuardian 743 Sq. ft. HEPA Pet Pure Filter Air Purifier with UV-C, Black, AC4300BPTCA
644.5 out of 5 Stars. 64 reviewsGermGuardian 743 Sq. ft. HEPA Pet Pure Filter Air Purifier with UV-C, White, AC4300WPT $179.90
$17990current price $179.90GermGuardian 743 Sq. ft. HEPA Pet Pure Filter Air Purifier with UV-C, White, AC4300WPT
214.5 out of 5 Stars. 21 reviewsGermGuardian 338 Sq. ft HEPA Pure Filter Tabletop Air Purifier, with UV-C, Silver, AC4100 $211.63
$21163current price $211.63GermGuardian 338 Sq. ft HEPA Pure Filter Tabletop Air Purifier, with UV-C, Silver, AC4100
1474.3 out of 5 Stars. 147 reviewsGermguardian 728 Sq. ft. HEPA Filter Air Purifier with UV-C Light, 15", White, AC4711W $102.24
$10224current price $102.24Germguardian 728 Sq. ft. HEPA Filter Air Purifier with UV-C Light, 15", White, AC4711W
184.4 out of 5 Stars. 18 reviewsGermGuardian Air Purifier with HEPA Filter, UV-C, Removes Odors, Smoke, Mold, 1620 Sq. ft., AC9200WCA $149.99 Was $299.24
$14999current price $149.99, Was $299.24$299.24GermGuardian Air Purifier with HEPA Filter, UV-C, Removes Odors, Smoke, Mold, 1620 Sq. ft., AC9200WCA
224.8 out of 5 Stars. 22 reviews
Customer ratings & reviews
How item rating is calculated
Reviews summary
Pros
- : Offers similar quality at a lower cost.
- : Convenient operation with intuitive settings.
- : Improves sleep with constant air filtration.
- : Made with high-quality materials and solid build.
- : Captures and eliminates strong odors and smells from the air.
Neutral
- : Can be quiet, but may produce high-pitched sounds.
Generated by AI
Customer photos
+48 images
Sort by |
Showing 1-3 of 241 reviews
Jan 20, 2026
Dawna
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review
Verified Purchase
Affordable, cleaner indoor air
We used it the first few days on low. It did a nice job of keeping the air circulated and making the room feel fresher being closed up during the winter. The medium and high settings are loud, much like having a fan running in the summer. The high setting did a fantastic job of clearing out a smoky kitchen from an indoor grill in just a few minutes. After an hour or so you'd never be able to smell what was cooked. Running daily on the low setting has made a noticeable difference in pet hair and dust and in our breathing. It's something I should have bought a long time ago.
Helpful?0XHM9FFN1QRD399196436
Jul 7, 2023
AlexB
5 out of 5 stars review
Noticeable reduction in allergy symptoms
To set the stage, I frequently suffer from allergy symptoms of watery eyes, runny nose, stuffy nose and chronic cough. I had the whole series of allergy testing done and the allergist recommended I purchase a HEPA-filtered air purifier. Now that I own this Germ Guardian 22" Tower Air Purifier with HEPA and carbon filter, my only regret is not owning this sooner. It has been a difficult year of very high pollen levels, lots of dog hair shedding and pet dander in my household with the heat of the Summer, and severe air-quality issues from all the wildfires. I can honestly say that since using this air purifier my symptoms have improved. This is not a medical claim, by any means, but I do feel better now than before I began using it. It does make sense, however, due to the HEPA filters' ability to capture dust, pet hair, pet dander, and smoke. It is also simple to use, easy to tuck away in an inconspicuous corner of the room, and relatively quiet. When used on the low speed, I couldn't even tell it was on. The high speed is very noticeable, but not more than your standard fan or bothersome. I also feel more confident using this GermGuardian Air Purifier due to not having to worry about checking the filters at all; instead the LED light on the unit will tell me when it's time to replace the filter. All in all, I am extremely pleased with the ease of use and results, and will make it part of my everyday life.
Incentivized Review
Helpful?0XHM9FFN1QRD399196436
Dec 17, 2025
Gale
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review
Verified Purchase
Finally Smoke Free
My husband is a lifelong smoker, and although he doesn’t smoke in the house, the smell still seeps in from our attached garage. It’s been on my mind to get an air purifier. I bought this one to help freshen the air during the winter when I can’t open windows. The very first day I noticed a big difference. Right out of the box all you do is plug it in. The controls are simple, which I love. It runs quietly and does the job. It is attractive, as well.
Helpful?0XHM9FFN1QRD399196436
