How often do I need to replace the filter?

The HEPA filter typically lasts 6 to 8 months, depending on use and air quality. The pre-filter should be cleaned monthly.

Does it have an auto mode or air quality sensor?

No, it has three manual fan speeds and no air quality sensor or auto mode.

Is it good for a bedroom?

Yes, it is quiet on low speed and compact, making it suitable for bedrooms. Many owners use it while sleeping.

What is the UV-C light for?

The UV-C light is designed to help reduce bacteria and viruses in the air. It requires periodic bulb replacement.

How large a room can it handle?

It circulates air once per hour in rooms up to 743 sq. ft, but for effective purification, it is best for rooms around 150-200 sq. ft.

Does it produce ozone?

The UV-C light may produce a small amount of ozone, but it is within FDA limits. If you are sensitive, you can run it without the UV mode.

Where is the GermGuardian AC4825E Air Purifier cheapest?

At Quill, for $99.98, as of our latest check.

What do buyers say about the GermGuardian AC4825E Air Purifier?

Rated 4.6 out of 5 from 1,319 ratings.

Where can I buy the GermGuardian AC4825E Air Purifier?

5 stores we checked sell it, including eBay, The Home Depot, Amazon, Walmart, Quill.

GermGuardian AC4825E Air Purifier

Best price now

$99.98at QuillChecked 11 h ago

Compared across 5 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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What reviewers say

4.6 / 51,319 ratings

Owners generally find the AC4825E effective at reducing dust and allergens, especially in bedrooms, and appreciate its quiet low setting. Some complain about the cost of replacement filters and the need to replace the UV bulb, and a few find the higher fan speeds loud.

What people mention

Filter costCriticisedOwners say replacement HEPA filters are expensive and add up over time.
NoiseMixedReviewers find low speed very quiet but high speed noticeably loud.
Allergy reliefPraisedMany report fewer allergy symptoms and less dust after use.
UV bulbCriticisedSome complain the UV-C bulb needs replacement and is an extra cost.
Build qualityMixedWhile generally sturdy, some find the plastic housing feels basic.

About the GermGuardian AC4825E Air Purifier

Introducing the GermGuardian Air Purifier, a high-performance clean air purifier for home that ensures effective air circulation and thorough purification. This air cleaner is a powerful tool for any large room in your household. It especially stands out as one of the premier air purifiers for bedroom use, assuring comforting sleep while reducing allergens. Equipped with True HEPA filtration, our home air purifier can capture 99.97% of microscopic particles as small as 0.1 microns*, including dust, pollen, and pet dander. This HEPA filter air purifier proves ideal for those struggling with allergies and dust sensitivities, firmly establishing itself as a prime house air purifier. The inclusion of UV-C light technology in our air purifier HEPA provides an extra layer of defense and helps to further clean the air. Thus, our air purifier HEPA filter stands tall as a formidable line of defense in your home. This dust removing air purifier also features a pre-filter that traps larger particles, extending the life of the HEPA filter and ensuring long-lasting efficiency. Ideal as both large air purifiers for home and room air purifier for bedroom, this cleaner can circulate air 1x per hour in 743 sq. ft rooms, and 4.8x per hour in smaller 153 sq. ft rooms. The air purifier also features 3 speed settings and an ultra-quiet mode for peaceful sleep. Breathe in refreshed, clean air with GermGuardian, the ultimate tool among air purifiers and air cleaners for home. For best results, please use only genuine GermGuardian replacements. Embrace a new breath of fresh life with our air cleaner. *Initial efficiency value. As small as 0.1 microns from the air passing through the filter media.