GermGuardian AC4825E

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Overall

#102 in

Air Purifiers

according to Reddit Icon Reddit

Sentiment score58% positive
11
5
3

Top Pros

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Last updated: Jun 29, 2026

Reddit Reviews

Reddit Iconendoftwilight
6 months ago

The GermGuardian Air Purifier AC4825W works great for our home of 5 cats and 2 dogs. It is tall and may take up more space than you want however. It advertises that it purifies up to 743 sq ft but I think it does a larger area. It runs under $100.

Reddit IconHindsightisUnclear
3 months ago

I’ve been running germ guardians in all three bedrooms, the living room, dining room(which kids use for crafting and Lego mostly) and finished basement pretty much 24/7 since we bought our house 11years ago. I vacuum the prefilters every week or so and change the filters probably every 3 months, sometimes longer if they look clean but never more than 6months. (We also use a merv13 in our HVAC system) We ran 2 in our tiny two bedroom apartment for years before that. I’m still in the process of figuring out whether I officially have MCAS. (Still waiting on test results.) How did I spend 10+ years not realizing that it’s not ‘normal’ to need air purifiers running in one’s house 24/7? 🤦🏻‍♀️

3 months ago

The little one we have is AC4150BLCA and the big ones are AC4825DLX or I think a couple are a very slightly different older version but they’re almost identical. I believe we replaced two of the oldest ones around a year ago after almost 10 years of continuous use eventually wore out the motors and made them start getting noisy.

Reddit IconLeather__sissy
7 months ago

To answer your question you are exactly right. It’s literally just a fan and a filter. Might be too loud or not moving enough air for the size of the room but that’s it

Reddit Iconncilexie12
7 months ago

My germ guardian 4825 is decently loud on high. Hepa filter which covers all sorts of allergens. I bought it due to mold I found in my dining room, but I also have pets so it's working overtime.

Reddit Iconpassionateunicorn
3 months ago

Do you have the small white ones or the tall black ones..how do you vacuum it..I have the white ones..just changed the filter yesterday after five months .my bf thinks I'm nuts lol we have three one in the bedroom one in the living room and one in the guest room.. moving soon because of mold so wondering how to set up the new place ..

3 months ago

Is that the one with the UV? I didn't want uv.. super sensitive? I have that black one dlx without uv and I have two of the white ac3000.. honestly I don't know the difference

Reddit IconSea-Blueberry-4973
3 months ago

https://a.co/d/02oWu3ML I have had this one for at least 6 years and it’s on 24/7 and is still running! We moved to a bigger place last year and now we have 4 of these, change the filter when the light flashes and it keeps going!

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