GermGuardian AC4825 3-in-1

GermGuardian AC4825 3-in-1 Quick Review

The latest 22 inch GermGuardian AC4825 is considered one of the entry-level tower air purifier from its AC series. Featuring a 4-stage filtration with robust level of purifying depth, GermGuardian AC4825 is an admirable tower air purifier that would not cost you a bomb. With few convenience features to be compromised for its low price tag, does GermGuardian AC4825 offer enough filtration performance in the likes of AC5000 or AC5250pt? Continue read to find out more.
+- 149.99
     Annual filter ^    
+- 72 - 100
Online price*
    Latest Amazon price    
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GermGuardian AC4825 Specification

ProductGermGuardian AC4825
RSPRetail suggested cost +- 149.99
5.5 x 21.5 x 9 in
(14 x 54.6 x 22.9 cm)
Weight7 lb (3.2 kg)
Coverage (up to)155 sq. ft. (14 m2)
Dust free (CADR)
Pollen free (CADR)
Smoke free (CADR)100 cfm (170 m3/h)
Airflow speed
A filterAnnual filter cost ($)+- 72 - 100
- Lifespan
- Replacement cost ($)
Charcoal pre-filter
6 - 9 months
HEPA filter
- Lifespan
- Replacement cost ($)
True HEPA filter
6 - 9 months
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ Technologies
>UV-light/ PCO
LB4000 UV-C Light
10 - 12 months+- 24.99
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
FLT4825 Filter-B True HEPA
6 - 9 months
+- 34.99
Optional/ Addon
FLT22CB4 Carbon Filter (4 pack)
+- 14.99
FLT4850PT Filter-B-Pet True HEPA
6 - 9 months+- 39.99
Noise level
Power consumption
Timer/ Scheduler
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty3 years
Email/ Phone support

Product images

GermGuardian AC4825 key features

  • 4-stage filtration with 3 speed
  • True HEPA filter with 99.97% filtration rate and capture particles as small as 0.3 microns
  • Charcoal pre-filter
  • Optional UV-C light technology with Titanium Dioxide
  • Quiet operation
  • 3 years warranty
GermGuardian AC4825 dimension
5.5 x 21.5 x 9 in
(14 x 54.6 x 22.9 cm)
GermGuardian AC4825 weight
7 lb (3.2 kg)

Resembles to other GermGuardian Tower Air Purifier, GermGuardian AC4825 3-in-1 22 inch size is not compact but not overly bulky either. Made with black plastic housing with front air vent, the overall appearance is modern and practical for everyday use. Build quality is good with no no askew parts or filter gaps. Controls is located at top with one dial knob to control on/ off and the 3 fanspeed. With no digital display, timer or any other addon function, GermGuardian AC4825 3-in-1 only comes with passive features like ENERGY STAR rate, Safety certified by Intertek (Nationally Recognized Testing Laboratory) and 3 years warranty.

Airflow effectiveness and purifying coverage

Despite the inclusion of charcoal pre-filter, True HEPA filter and UV-C light, GermGuardian AC4825 3-in-1 is still essentially a tower air purifier so the airflow coverage will fall at a restrained level. Appropriate for small room size like bedroom even though living hall could do with it as well. Moving forward with the purifying capability, GermGuardian AC4825 3-in-1 100+ smoke CADR means it can pull in a good amount of air-borne particles within its radius. The steady airflow delivery rate would take up and halt nearby dust, bacteria or odor from flowing around the home.

Noise level and power consumption

GermGuardian AC4825 3-in-1 noise level is significantly lower due to the silent technology and well enclosed body framework. Virtually no noise at low fan speed, light noise at medium fanspeed and distinct noise at high fanspeed. Compare with other quite similar tower air purifier, you would have no problem with GermGuardian AC4825 3-in-1 produced noise level.

Carrying on with the power usage, not only GermGuardian AC4825 3-in-1 is ENERGY STAR rated, the moderate airflow distribution means it will not hurt your wallet on utility bills even in long-run. Electricity consumption is fairly low across all fanspeed although you do have to manually adjust the speed as Auto mode is not included in the feature. By comparison with other home appliances power consumption, GermGuardian AC4825 3-in-1 monthly electricity usage level is reasonably low.

noise graph

Final thoughts on GermGuardian AC4825 3-in-1

In short, we love GermGuardian AC4825 3-in-1 low price tag, consistent airflow output and 4-stage filtration. In comparison with the upsides and downsides, the higher grade and more expensive GermGuardian AC4825 would probably be a safer buy if you are not entire sure what type of air purifier you are looking for.

GermGuardian AC4825 is covered against

GermGuardian AC4825 VS Dust



GermGuardian AC4825 VS Pollen



GermGuardian AC4825 VS Hair

Hair/ Pet hair


GermGuardian AC4825 VS Dust mite

Dust mites


GermGuardian AC4825 VS Mold/ Mildew

Mold/ Mildew


GermGuardian AC4825 VS Pet dander

Pet dander


GermGuardian AC4825 VS Virus/ Germ

Virus/ Germ


GermGuardian AC4825 VS Tobacco smoke

Tobacco smoke


GermGuardian AC4825 VS Chemical



GermGuardian AC4825 VS VOCs



GermGuardian AC4825 VS Smoke/ Gas

Smoke/ Gas


GermGuardian AC4825 VS Odor



GermGuardian AC4825 4-stage filtration and 155 sq. ft. purifying applicable area is excellent when take on irritants, allergens, viruses and bacteria. It is very efficient on typical airborne particles example dust, pet hair. On the one hand against micron-size particles, GermGuardian AC4825 3 speed airflow distribution + True HEPA filter is good at capturing pet dander, dust mites, fungi, pollen, mildew, mold, spores and germs.  On smokes, odors and fumes, GermGuardian AC4825 filtration is below par in handling chemicals, odors, cooking smell, fire, VOCs, tobacco smokes, cigarette, vapor, radon and ammonia.

In conclusion......

  • Inexpensive especially after the online discounted price.
  • Decent but not over the top CADR return for an air purifier of its price range.
  • Use True HEPA filter instead of HEPA-type filter like most tower air purifier.
  • UV-C light is effective in eliminating airborne mold, bacteria, germs and viruses.
  • 3 years warranty.
  • The total annual filter replacement cost is close to the price of a brand new AC4825.
  • The combined charcoal pre-filter smoke filtration is less effective than a pure granular activated carbon filter.
  • Uses a smaller UV-C light compare with AC5000 series.
  • Slightly troublesome to replacing UV-C light as you are require to unscrew 2 screws to pull out the bulb.
  • No timer, Auto mode and air quality display.
Build quality
Airflow delivery
Particle Filtration
Smoke Filtration
GermGuardian AC4825 3-in-1

Frequently Asked Questions (FAQ)FAQ

GermGuardian AC4825 Troubleshooting

Safety Tips


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