GermGuardian Hi-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.

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.

Read a ton of great reviews for this product, so I purchased 4 of these. One arrived without filters, and I’m assuming the UV light was also missing, because the light wouldn’t stop flashing after I inserted filters from one of the other units to operate it. That unit was returned. As for the other 3 units, to be honest, they seem to work just like any other air filter. They’re fairly quiet, but noise isn’t a main concern. At the lowest setting, you can barely hear it; medium setting it sounds like water running in the next room over; at the highest setting, it’s pretty loud, and I think it would drown out the loudest snoring. One downside of these units is at night, because the lights are super bright. There’s no option to turn the lights off for nighttime sleeping, and that’s really inconvenient and annoying. We’ve had to cover the lights as best we could with thick towels. They sometimes fall off, and the lights are quite blinding bright blue/white LED looking lights. Another issue is it also doesn’t seem to help filter out smells. I’m not sure if it’s because the carbon filter inactivates after a day or two, but if smells are your goal, this is not for you. Our main reason for buying this air filter was primarily for allergies. It works fairly well compared to other air filters we have used and own. We feel the air quality has gotten a little better, but not substantially. I was hoping this would keep dust mites down to a minimum, because that’s our main allergen. It does an okay job at that, but I’m still on the hunt for a high quality filter that will be more effective on dust mites. I’d say our allergies are down by about 10% compared to using our Honeywell air filter. However, it’s not a bad filter for now. Lastly, these are quite big, and it says to keep clear a minimum of one foot around all sides for proper operation. They’re already quite large and bulky, so if you don’t have the space, these are going to be really inconvenient. Very easy to set up and change the filters though, and the rounded design of it makes it easy to clean and keep clean.