GermGuardian Air Purifier with HEPA Filter, UV-C, Removes Smoke, Odors, Mold, 338 Sq. ft., AC4100
GermGuardian Air Purifier with HEPA Filter, UV-C, Removes Smoke, Odors, Mold, 338 Sq. ft., AC4100
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GermGuardian Air Purifier with HEPA Filter, UV-C, Removes Smoke, Odors, Mold, 338 Sq. ft., AC4100

Key item features

  • Advanced Filtration: Features True HEPA filtration, capturing 99.97% of airborne particles as small as 0.1 microns, including dust, pollen, and pet dander.
  • UV-C Sanitization: Incorporates UV-C light technology to further clean the air by reducing airborne bacteria, viruses, and mold spores.
  • Odor Reduction: An activated charcoal filter effectively reduces unwanted odors from pets, smoke, and cooking fumes.
  • Multi-Layer Trapping: A pre-filter traps larger particles like dust and pet hair, extending the lifespan of the main HEPA filter.
  • Efficient Coverage: Circulates air 1x per hour in 338 sq. ft. rooms and 4.8x per hour in 78 sq. ft. rooms, ensuring thorough purification.
  • Simple Maintenance: Requires replacement of a single filter (filter E, model FLT4100) every 6-8 months, depending on usage.
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Customer ratings & reviews

4.3 out of 5 stars
stars141 ratings108 reviews
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Reviews summary

Pros

  • : Designed for small rooms and space-efficient.
  • : Ideal for small spaces with high airflow.
  • : Offers suitable size at affordable price.
  • : Captures unpleasant smells in small rooms.

Neutral

  • : Can be soothing white noise, but also loud on high speeds.
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Showing 1-3 of 108 reviews

Dec 24, 2025
Felicia C.
5 out of 5 stars review

Seller Verified Purchase

We own 7 of this air purifier. It's a simple machine but does a great job filtering the air. Carbon pre filter plus the hepa filter is all that's necessary for a good filtration job. Doesn't take up a lot of space but does a job as good as a larger one. The easy filter changing does not take a lot of time, simply easy change! We owned a lot of air filtration up systems including very expensive towers and this remains to our favorite. We have more than one in opposite ends of the rooms, works great!

Review from http://GuardianTechnologies.com
Helpful?3CX3NBRSNOCM2693443229
Aug 21, 2025
Photobuff42
Item details
Color: Silver
Sold byHome StoreDelivered byWalmart
5 out of 5 stars review

Verified Purchase

It works

I bought this for our boat. We also have a GermGuardian purifier in our bathroom that works well. I wish this was a little quieter, but overall it works to minimize odors.

Incentivized Review
Helpful?3CX3NBRSNOCM2693443229
Aug 8, 2025
Rett
5 out of 5 stars review

Seller Verified Purchase

Great tabletop air cleaner

I have purchased three over the last five years. I use two of them in each of my large closets and one in my office near my desk. The filters are checked and changed usually every 4 months or so. Shipping is super quik when I need filters and the company offers multiple paks which is convenient. Cant wait to try the new version, with the current set up I am never sure if the UV lite is on or off ( at this point they probably need to be replaced). Thanks!

Review from Guardian Technologies
Helpful?3CX3NBRSNOCM2693443229