GermGuardianHi-Performance Air Purifier with HEPA Pure Filter, Timer, Ionizer, Removes 99.97% of Pollutants, Large Rooms up to 1620 Sq. Ft., UV-C Light Helps Reduce Germs, 27”, White, AC9200WCA

I have owned a handful of other HEPA filters, and this is an excellent model. We have been cooped up inside for a while and my allergies are getting a little worse due to our pets, vintage rugs, house dust, and wood dust. This unit deals with everything, and my nasal and eye allergies are manageable again without eye drops and nose spray. This filter has a very low noise level. Easy to move around despite the weight, because the top part is a handle. Moves a high volume of air pretty quietly. The high setting sounds like a box fan on medium, and is muffled by the plastic housing. The middle setting is as quiet as a moderate outdoor breeze, and the lowest setting is nearly inaudible. My upstairs unit deals with pet allergies and old carpet dust very well - also the uvc light and airflow will hopefully help with COVID-19 safety when quarantine is over and we are having guests again. I just bought my second unit for my basement workshop and it has made a dramatic difference in the dusty air down here. I own two other small germguardian models for the bedrooms,and they're effective at rooms. This one is undeniably much more powerful at moving and cleaning air, and keeps the air clean in our connected living room, dining room, hallway, etc. Between this model and a good fan to distribute HEPA-filtered air, our living space has great quality air now. I would recommend this unit, and would buy this again myself.

This is the business.Finally, a product which meets our needs. What are our needs?Our needs are a mix of needing solid air filtration due to living in a downtown environment and cooking odor mitigation. Plus, we have two cats. In our high rise, with giant dual glazed windows, etc., there is air exchange via a plenum. The air enters via a pocket door in our second (guest) bathroom which is pretty central to the (850 sq ft) apartment. So, outside downtown air is coming into our space this way. Then there are random cooking odors which manifest via this same air exchange point. OF COURSE this should be fixed by the building. But have you ever tried to get something like this fixed when all you do is lease the space and there is a waiting list? ha ha ha haThis device includes the tech to deal with the odors (charcoal, UV and Ozone) AND a HEPA filter. On medium it is a gentle white noise. On low it is inaudible. I invoke both the UV and Ion generation and this unit scrubs the air very clean. Previously, using only a HEPA device, the smells saturated the filter quickly, rendering it stinky. It sits in the hallway across from the pocket door from which streams the outside (and other) air.Highly recommended. As you can toggle the UV and Ions, it represents a high degree of flexibility. It is well made, practical with the built in handle, and effective.

Super quiet in comparison to my old filter. It's actually quieter than my A/C as well. My dust problem has virtually gone away, and it is pleasant to use. My friend keeps saying it's 'from the future', because while the buttons do not have a feed back to them, the device not only changes lights but also makes a pleasant chime to indicate something is changing. The filters were easy to install (just make sure they are pointed the right way). I've been using this for almost a month running nearly constantly.It is one of the largest they make, but it isn't much larger than the Holmes unit I have in the sense of the depth and width, what makes it larger is the height, which for this kind of sit against a wall filter you don't even think about.YES the UV and the ION turn off.The only thing I would ever want to change is the color of the LED lights, I'd want to change them to a red for use in a bedroom (in general red is better for dark adjusted eye sight, thus red bulbs in photographic darkrooms). But even though the blue lights are bright and clear, I hardly notice them when not looking directly at the unit when it is in my living room.EDIT: After 5 months of near constant use. My house has remained wonderful to come home to. I live in an rented space and have some pretty unpleasant allergies (grass, mold, mildew, dust...etc), this has continued to help all winter, and into allergy season. I have a cat, and have had friends who are more allergic to cats than I am come here with no problem. Keeps the dander, dust, and odors down. Even helps with cooking smells. Still pleased. Looking forward to seeing how it does this summer.