The Germ Guardian AC4825 by Guardian Technologies is a True HEPA air purifier. It relies on a UV-C light source to eradicate viruses and bacteria in the atmosphere. The three in one title describes its three phase air purification procedure, which involves the use a carbon activated pre-filter (HEPA filter) and then the UV-C light source.
Germguardian ac4825 AIR PURIFIER
EASE OF USE
DESIGN
PRICE
Likes
- True Hepa filter
- UV-C Light Filter
- Carbon Filter
Dislikes
- Replacement Filters are coslty
- Sticks out like a sore thumb
The most important advantage to using this remarkable device, with its HEPA filter and UV-C light innovation, is that this domestic purification unit lets out zero ozone.
GermGuardian AC4825 Filtration System
The Germ Guardian AC4825 has its own activated charcoal pre-filter, which is constructed out of a small piece of charcoal. The pre-filter is affixed to the HEPA filter and the two components are then positioned, on the device, close to the UV-C light source.
The dual filtration system comes as a single unit. This unit can be upgraded if an old one becomes tired, worn, or degraded – you are advised to do this approximately once per year. The Germ Guardian AC4825 replacement filter is priced at around $35.
How does the GermGuardian AC4825 three phase cleaning process function?

The first phase is the activated carbon pre-filter. The pre-filter features a thin piece of activated charcoal which grabs the bigger pieces of debris in the air; for example, dog hairs, lint, and dust. In fact, charcoal is extremely good when it comes to eradicating domestic smells too, especially kitchen smells and pet smells.
Second phase, the air is pushed through the genuine HEPA filter. According to the manufacturer, it is here when more than 99% of all bacteria, debris, or irritants in the air are eradicated (even those as tiny as three microns across). These irritants can come in the form of mold, dust mites, pet dander, and pollen.
The final phase, is passing the filtered air through a UV-C light source. For this process, the UV-C light source is designed to kill airborne bacteria (you will be glad to know that e-coli, streptococcus, and the rhinovirus are all eradicated by this machine). The UV-C light source breaks down the outer surface of the bacteria or the virus and degrades its DNA. This is the reason why the GermGuardian AC4825 Air Filter is so effective. In fact, the device is utilized in many hospitals and clinics to keep the air close to sterile.
What does a CADR ranking mean?
The Germ Guardian has a CADR ranking of 100+. This means that it has been approved by the Association of Home Appliance Manufacturers (AHAM) and confirmed as being able to provide 100 cubic feet per minute of purified air for every one of these particulates. This measurement is according to a space with an eight foot roof, in which the air is entirely replaced five times per hour.

Will the Germ Guardian clean my home?
The GermGuardian AC4825 Air Purifier is best suited to a 155 square foot space – so, a small to medium sized area. This air purification unit is perfect for a smaller bedroom or an office. According to the manufacturer, the device should be utilized in a space where the area can be simply cut off (and all windows and doors shut). This air cleaner is great at eradicating irritants, pet dander, mold spores, dust mites, pollutants, and regular domestic smalls such as kitchen odors, smoke, and pet smells. The use of UV-C light innovation is handy, because it kills germs in the atmosphere.
According to users, the unit is great to eradicating smalls, particular those from animals and kitchens. It has been said that more pungent smells, like odors from candles and incense, take a little longer to remove, but they are eradicated if given enough time.
A few users talked about noticing a smell after switching the unit on for the first time, but the majority said that the smell vanished after a couple of days. The presumption is that this odor is simply from the new plastic housing the filters – most new products have that ‘new product’ smell and it is nothing to worry about.
GermGuardian AC4825 User Experience
The GermGuardian AC4825 comes in a stylish black design – users typically described the style as being ‘contemporary’ and ‘appealing.’ It goes well with almost any kind of domestic décor, unlike a lot of other air purifiers.
The air intake and outflow valves can be found on the front of the device. This can puzzle users sometimes, because it looks like air is being pushed out of just one end of the device. However, this is not the case – it is just the way in which the purifier has been constructed. The air is pulled through on one end and pushed back out through the other end.
This air purification system is lightweight and can be transported easily – a lot of users really like this about the Germ Guardian. The handle is simple to locate, as it is positioned on the top of the device (on the back side).
The unit features an LED display with vivid blue lights. This could be a slight frustration if you are the type of person who needs to go to sleep in a completely black bedroom. However, it is possible to deactivate the UV-C light source and reduce the blue lights to one reduced red one – you cannot switch this light off without unplugging the unit. If the single red light is still a problem, placing a strip of tape over it could help.
How much Does the GermGuardian AC4825 Cost?
The Germ Guardian has an Energy Star rating and it deserves it too. It uses just 55 watts, even when performing in ‘high’ mode. Plus, keeping the unit clean is very easy – all you need to do is gently wash the exterior surface with a dry material. If you need to remove dried on stains, use a little water.