Pure True HEPA Air Purifier
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Effective Purifier for Airborne Allergies

The GermGuardian AC5250PT is an extremely effective air purifier that will give relief to even severe allergy sufferers. It includes a 3-in-1 air cleaning system using a PetPure Filter, UV-C light, and a HEPA filtration system. It is one of the more expensive air purifiers on the market today, but it lives up to its price point and is a worthwhile investment for anyone who suffers from severe allergies. It is suitable for small or medium sized rooms, but not for large ones.

125+ CADR rating

The CADR rating measures how effectively a purifier can remove certain particles from the air of differently sized rooms. If a purifier has a CADR less than 2/3rds the size of the room you want to use it in, it will not be effective. With a 125 CADR rating, the GermGuardian AC5250PT is suitable for rooms measuring 190 square feet and less.

5 fan settings, fairly quiet

The GermGuardian AC5250PT does produce a white noise affect while running. It has five fan settings; settings 1 and 2 produce almost no noise, while settings 3 through 5 will be noticeable. Most users have not complained that the noise is overpowering or disruptive to their sleep, and you can use settings 1 or 2 during the night if the higher settings bother you. If you decide to turn it to lower settings at night, it is recommended that you run the purifier at 4 or 5 throughout the day. This model also comes with a timer that will automatically shut the unit off after a preset number of hours.


True HEPA Filter

The GermGuardian AC5250PT includes a HEPA, or high-efficiency particulate air, filter. This is the same type of filter used in hospitals and airplanes and must conform to specific regulations set by the US Department of Energy; this regulatory oversight means that HEPA filters are among the most reliable in the industry.

PetPure Filter

The PetPure Filter on this model is treated with antimicrobial agents to halt the growth of mold and bacteria within the unit and your home. Since mold and bacteria are leading causes of unpleasant odors, this helps keep your home smelling fresh even with multiple pets. With multiple filtration levels, the PetPure Filter is able to remove allergens, viruses, mold, bacteria, and mildew from the area.

UV-C light

The GermGuardian AC5250PT’s UV-C light uses UV rays to kill bacteria, viruses, and mold spores; however, it does emit a visible light so it may not be ideal to use this feature in a room where it could disrupt your sleep. You do have the option to turn it on and off at your discretion.


Unpleasant odor

Users have reported that this model gives off a chemical or ozone-like smell, especially within the first days of use. While the strength of the odor does weaken over time, it may continue to emit a faint odor when in use over time. Users have reported that the smell mostly emits from the UV light, which can be turned off.

Expensive filters

The replacement filters for the GermGuardian AC5250PT are one the pricier side, and it is recommended that they be replaced every 6-8 months. Consider the extra cost when you are thinking about purchasing this model. You can slightly extend the life of your filters by vacuuming them regularly.

Overall Review

The GermGuardian AC5250PT lives up to its price range in terms of output. While some users may ultimately find the faint smell to be a deal breaker, the majority of people will find that the relief they experience easily outweighs this. It is advertised as being suitable for large rooms, but you will find it is most effective in small or medium-sized rooms. The 3-in-1 filtration system is the GermGuardian AC5250PT’s greatest asset, because it ensures that the purifier removes 99.97% of airborne contaminants as per USDE regulations as well as odors from mold and bacteria via the antimicrobial-treated PetPure filter.