GermGuardian AC4825 3-in-1 Review

The 3-stage operating of this air purifier allow it to remove every impurity in the air, including bad odors, germs, mites, and allergens. Therefore, the benefits on your health will be countless and if you add to that the stunning design and the ease of use, you have an air purifier that can outcome many other models.

GermGuardian AC4825 3-in-1 Ratings

DESIGN - 92%



The 3-stage operating of this air purifier allow it to remove every impurity in the air, including bad odors, germs, mites, and allergens. Therefore, the benefits on your health will be countless and if you add to that the stunning design and the ease of use, you have an air purifier that can outcome many other models.

User Rating: 4.29 ( 20 votes)

If the air in your house is constantly causing you sneezing and difficulties in breathing, it is like that it is filled with allergens and bacteria that can pose a risk to your health. To solve the problem, you will need an air purifier that will manage to remove all the impurities from the air and allow you to breathe easily. An example that could improve the way you breathe is the GermGuardian AC4825 3-in-1, a high-quality model designed to handle most of the impurities that travel through the air. For a reasonable price around $90, you can relax knowing that your family will breathe clean and fresh air at home with the help of this efficient purifier.


This is a 3-stage air purifier that uses 3 different technologies to ensure maximized air filtration. The first stage is the carbon filter that eliminates common household odors caused by pets, cooking or smoking, meaning you can use it in any room of the house, even in the kitchen. The second stage is the True HEPA filter, which is the top type of filter that can remove up to 99.97% of all the impurities existing in the air. This type of filter can handle the smallest particles as small as 3 microns in size so that even the tiniest mites get trapped inside the unit. Being able to capture dust mites, pet dander, mold spores, and pollen makes a great difference in air quality and turns out to be very useful in easing asthma symptoms. The third technology is the UV-C light that kills airborne germs and bacteria that can pose a risk to your health, especially who suffer from respiratory diseases. The UV-C light captures and destroys the DNA of a wide range of viruses including rhinovirus, E.coli, and streptococcus, leaving the air completely clean and sanitized. This complex operating makes the GermGuardian AC4825 3-in-1 one of the most efficient air purifiers that can fight plenty of health threats. Besides its high efficiency, this model is also energy efficient, as it meets the standards set by the US EPA, which proves that using this air purifier will reduce your energy costs. Furthermore, it is also a CADR rated 100+ unit that has been tested and measured based on a ratio between its consumption and the CADR for dust, and it has successfully passed all tests.

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Specifications Sheet

Specs AC4825 3-in-1
Dimensions 21.5” x 9” x 5.5”
Weight 10 Lbs
Area Coverage 155 Square Feet
Noise Level N/A
Power 62W, 120V, 60Hz
CADR Rating for Smoke 100+
CADR Rating for Pollen 100+
CADR Rating for Dust 100+
Fan Speeds 3
Filter Type True HEPA, UV-C Technology
Odor Reducing Filter Yes
Control Panel Electronic
Timer Function No
Warranty 3 Years


You could not ask for a more beautiful design in an air purifier, so if you are looking for a unit that you won’t have to hide away, this is the perfect choice to complement your living room or bedroom. The stylish shape matches the most modern of interior designs, with a matte black housing and sleek stainless steel insertions. The LED light at the top is what really makes it stand out and you will love how small and easy to carry it is, with only 22” in height, 10“ in thickness and weighing 10 lbs. The On/Off button and the fan adjustments are conveniently placed on top of the unit, so you can easily operate it from standing.

Other Features

The LED on top of the unit is not only a design hack meant to make it looking good, but it also serves as a reminder for when it is time to replace the filter or the UV-C bulb. If this LED starts blinking the first time to turn the unit on, you simply have to hold the UV button for a few seconds and the system will reset. Then the product is ready to start working at its best. It uses a fan that can be set to 3 speeds, namely low, medium, and high, which not only determines its power but also the noise level. The first two speeds are so silent that you cannot even tell whether or not the unit is working, and the high speed barely emits a low noise, but this speed will hardly ever be needed. The high-quality technologies and materials used in manufacturing this unit guarantee its optimal functioning and the 3-year warranty will solve any problem with the unit withing the first 3 years of use.

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Effective 3-stage filtration
Removes up to 99.97% of contaminants
True HEPA filter can remove particles as small as 3 microns
UV-C light kills germs and bacteria
High CADR rating
Modern tower design
Quiet operation
3-year warranty


NO real downsides to this product  

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Final Thoughts

The top of the line GermGuardian AC4825 3-in-1 air purifier is a perfect example of how big of a difference a unit of this kind can make when it comes to your health if it is made with attention to detail. The 3-stage filtration that it features ensures that not only will the air be cleared of impurities, bacteria, and viruses, but that unpleasant odors won’t ever linger in it either. What makes it so great performance-wise is the fact that it features a True HEPA filter, a carbon filter, and a UV-C light. Another aspect that has impressed us when reviewing this air purifier is the fact that it boasts an incredibly low energy consumption, being certified by Energy Star for its efficient operation. Other elements that have impressed us when reviewing it are its great design, durable construction, and whisper quiet operation that allows the user to even place it in the bedroom or the nursery.

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  • Ted

    Is this unit silent enough to keep it in the bedroom at night? Or will it wake me up with a buzzing sound?

  • Hank

    I see that this model can handle removing unpleasant odors from the air. Does it mean that it will eliminate the nasty smoke smell as well?

    • The activated carbon filter that it features is capable of effectively removing smoke particles and odors from the air. Therefore, it’s a great solution for you to go with in case there are smokers in your household.

  • Valerie

    Are there any ozone emissions involved in operating this air purifier? I want to get it for the nursery and I want to be sure it won’t cause more harm than good.

  • Megan

    I like the UV light feature, it sounds great for sanitizing the house for the children.

  • Abby

    Will it keep the air in my child’s room clean enough? He is only 8 years old and he suffers from allergies, so I’m concerned that the air in his room might not be so great for him.

    • The UV-C light that this model comes with sanitizes germs by permanently destroying their DNA, while the unit’s overall performance ensures that allergens, dust mites, bacteria, and any other pollutants won’t linger in the air either. This makes it perfect for a child who suffers from allergies, this being the reason why we strongly recommend it for you.

  • Rufus

    I was aware of the fact that GermGuardian is one of the best brands on this market, so my interest in this model was even higher due to this reason. I’m definitely going to buy one for myself as soon as possible as I am confident that what’s in the review is actually true. My mom actually owns a GermGuardian air purifier, and she’s happy with it and wouldn’t change it for the world.

  • Benny

    For how long is it backed by a warranty?

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