Holmes® HAP412N-U HEPA-Type Mini Tower Air Purifier

 (18 customer reviews)

I have been using this Holmes Air Purifier for several months and can give it my 5 STAR recommendation.

It has 3 speed settings for the fan and a separate switch that turns on the ionizer. At the mid or low setting the fan is nice and quiet. On high it's a bit loud but tolerable for daytime activites. I keep my unit running all the time on the medium setting and also keep the ionizer turned on.

Within a couple of hours of first setting up the unit, I noticed an immediate improvement in the air in my bedroom (12 x 14). It seemed "fresher" and easier to breathe. After a few days my dust allergies were virtually gone and breathing, while I was asleep, was much easier. Before buying it, I would wake up with a stuffy nose and a dry mouth because my nose was plugged and I was forced to breathe through my mouth. (Yuk!)

The black soot commented on by the other reviewer is due to the negatives ions which attach themselves to the smoke particles in the room and...Read more

This is the first air filter I've ever bought. After using it for 6 months, I can now testify on behalf of this product.

I've been using it in my bedroom (dimensions 16x12 ft) continuously on the middle setting. The noise level is minimal on the 2nd setting (sort of like a low hum... I don't even notice it anymore) and even quieter on the lowest setting. I have pretty severe dust allergies and even the first day, I noticed a difference. No more sneezing, stuffy nose, itchy throat, etc.

The recommendation that came with the manual said to change the HEPA-type filter every 3-4 months. After about 4 months, I opened up the unit to check on the filters. There's a washable carbon pre-filter and a replaceable HEPA-type filter. I cleaned the pre-filter. The HEPA-type filter looked pretty much like new, so I didn't buy a new filter. (there are pictures of how dirty the filter looks at various stages inside the panel after you open it up).

Last...Read more

Pretty good little unit for the bedroom. Quiet operation and reduces any oder that may be lingering. I'm a smoker and it usually clears the air pretty quickly.