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GermGuardian AC4825 Ideal for small or medium sized homes


One of the most popular air purifiers on the market is the AC4825 made by GermGuardian. Many stores will offer you GermGuardian AC4825 air purifier as the best solution to clear air in the room. And there are many reasons behind that. One of the most important reasons why this little device is a best buying air purifier is the GermGuardian company. GermGuardian as an air purifier manufacturer is the leader in the field of air purification. Because of that GermGuardian AC4825 deserves its own review on this site.

GermGuardian AC4825 22” 3-in-1 Full Room Air Purifier

GermGuardian AC4825 Features

q? encoding=UTF8&ASIN=B004VGIGVY&Format= SL250 &ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=airpurifierfi 20&language=en USGermGuardian AC4825 Ideal for small or medium sized homes
AHAM VerifiedThis mark means the air cleaner’s CADR has been independently tested for its ability to remove tobacco smoke, pollen and dust and it recommends a room size based on the CADR calculation.
HEPA, UV-C and CharcoalHEPA Filter captures 99.97% of dust and allergens as small as .3 microns such as household dust, pet dander, mold spores and plant pollens.
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Clean Air with Style and Efficiency

GermGuardian is best for people who live in small to medium-sized homes. If you are tired of smelly air, AC4825 is all you need. One of the best air purifiers that ensure that air in your home is free from a variety of contaminants so you can breathe and feel fresh.

It is 3 in 1 air purifier with UV-C light available at a lower end price scale. The combination of UV-C, HEPA, and odor reduction mechanisms helps at eliminating dust, allergens and bad odor from the air. It is capable of covering an extensive range of air pollutants.

Three Stage Filtering Ability

At the first stage, airborne particles need to get past the charcoal filter. A charcoal filter will trap everything that is large and may damage the HEPA filter too fast. But the primary function of the charcoal filter is to remove odors and bad smells. Unfortunately, AC4825 does not have a large charcoal filter which means that it will take more time to remove odors from the air. Air purifiers with larger charcoal filters are faster at removing unwanted odors, but then that means you need to place a big box in your room.

The second filter in the three-stage filtering system is the most important filter, HEPA filter. HEPA filter in GermGuardian AC4825 is powerful and is able to remove pollen, mold, bacteria, pet dander, dust mites, and everything down to 0.3 microns. HEPA filters get dirty with time and need to be replaced for the best performance.

The last stage in fighting the pollution is UV-C light with titanium dioxide combination. Now, this unique technology that is not that common in air purifiers is able to remove viruses, bacteria, mold spores and germs from the air. You would think that this air purifier must emit something bad, but the California Air Resources Board gave the green light to the GermGuardian model. Certificate from CARB is very important because not all air purifiers can be used in California. California has strict health laws, and GermGuardian AC4825 have passed them all, and that means something.

Certificates and Efficiency

Like I already mentioned California gave the green light to this model and the air purifier is verified by the California Air Resources Board. The air purifier also got energy star which means that the energy consumed by the device will not make your power bill go up. You can without a problem let the GermGuardian AC4825 run for a whole day. 

GermGuardian AC4825 have great rates and is AHAM verified. It got CADR for a smoke at 108, dust over 118 and pollen over 125. The tests are made in 167 square feet room. If you place the air purifier in smaller room CADR scores will be higher, and the air purifier will be more effective.

Good for Health

Three-stage filtering is what makes this air purifier attractive. Many air purifiers will remove allergens such as pollen, dust, pet dander, mold spores, and even smoke. But only a few air purifiers on the market have the ability to combat the bacteria and viruses. Thanks to the UV-C light technology GermGuardian AC4825 has powers to kill those villains. Because of that, I am highly recommending this air purifier to the people who have a weak immune system and are very sensitive to allergies, viruses, and bacteria. With spending a hundred dollars, you can boost your health by using an air purifier who will eliminate things that may harm you.

Fancy Options and Cool Modern Design

The GermGuardian is an absolute stunner. It is one of the most good-looking air purifier available at low price scale. The air purifier looks like a tower that is high as 22 inches, and that structure allows the air purifier to be placed in any spot. Lightweight and blue LED light with black casing to make it a beauty. It is capable of increasing attractiveness of the room in which is placed.

On top of that, it does not require too much of maintenance. All you need to do is clean it with a soft dry cloth. The filters need replacement every eight months depending on the usage.

Indicator lights and Options

A small but smart feature like indicator lights makes AC4825 the best purifier. The lights start to blink automatically when filter and UV-C bulb requires replacement, so you do not have to remember the date when you last changed the filter. 

AC4825 is not the complex device, and it is pretty simple to use. You can turn it on and let it run on a default speed, or you can change the speed from three different speeds. Also, there is a button for UV-C usage. UV-C light is not needed all the time because once it kills all the unwanted and hazardous things in the air, you can turn it off.

Replacement Filter

Filters in such an advanced device need to be replaced regularly. Actual replacement period will be determined by the use of the air purifier. The more you use an air purifier, the sooner you will need to replace filters. Also if you use the air purifier in extremely polluted environment, then the HEPA filter will need replacement sooner.

q? encoding=UTF8&ASIN=B0055521W0&Format= SL250 &ID=AsinImage&MarketPlace=US&ServiceVersion=20070822&WS=1&tag=apfpi 20&language=en USGermGuardian Air Purifier Filter FLT4825

Reduces odorsCharcoal filter layer reduces common odors from pets, smoking and cooking. Acts as a pre-filter to capture large dust particles, helping to extend filter life.
Multiple Levels of CleaningMultiple levels of cleaning include HEPA, Pre-Filter and a Charcoal layer to help improve indoor air quality.

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But there is a period of 6-8 months when most of the people change their filters. You can last longer if you are not using air purifier all the time, but then you are gambling with the best performance of the AC4825, and that is not a smart choice. It is always best to use an air purifier that is working at maximum effectiveness. Everything below that and you risk the low quality of the air, and that can drag other unwanted consequences like health problems.


  • Extremely Affordable Air Purifier
  • Three Stage Filtration
  • Energy Star Efficiency
  • HEPA Filter
  • GermGuardian Quality
  • One of The Most Popular Air Purifiers on the Market


  • AC4825 is a small device and is not meant to be used in large rooms. If you for whatever reason put it in a room that is larger than 170 square feet you will notice that the air purifier is struggling with the air filtration. It is highly recommended to use the air purifier in small to medium size rooms.

Final Verdict

This is one of the best-looking air cleaners with an efficient air filtering system. It ensures different types of contaminants are eliminated before they can reach you. GermGuardian AC4825 is ideal for small sized homes. It is not at all difficult to use, and the purifier is affordable as well. It can help your family with allergies and asthma. On both low and medium it gets so quiet that no one can hear it. The silent work allows this air purifier to work at night while you are sleeping. With such low noise pollution, you will not have trouble concentrating on work or taking a nap. It’s a complete package with a quick sense of cleanliness in the air and strong air rotation. Once you buy this product, you will use it for several years, keep in mind to come back here and write a report and your satisfaction with the product, I am sure your view on the product will be positive.

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