Air Purifier with Humidifier Combo – Covers up to 1,230 sqft in one hour, True HEPA Filter Air Purifier for Medium Rooms, Home Nursery, Dust, Smoke, Pollen - KC850U

We have used this for years in our bedrooms and it really helps with our allergies. I've got the smaller version for my daughter's room. Make sure to get some good quality citric acid to clean the humidifier filter monthly and this thing will last forever. Good food grade citric acid is available here on Amazon and that's what I use, along with a 5 gallon HD bucket. I use the water tank for this thing to weight down the filters carefully so they stay fully submerged. Its not very loud and creates a light white noise for you that isn't too obtrusive. The filters all last a pretty long time and have different change frequencies outlined in the manual. You can get all of the filters from here on Amazon. My allergies are so bad I have to get weekly allergy shots and this really helps. I was also able to get a letter of medical necessity from my allergist so we could claim this on our medical FSA.

I think this air purifier/humidifier is worth the money. You can barely hear it running. The air is so much cleaner. I've noticed my husband and one of our house pets has stop sneezing. Very simple easy to use controls (that I love) easy to fill water reservoir. We have two lap dogs and a cat in the house and its so hard to keep the pet hair swept up. The hair was always blowing around but with the humidity being higher its easier to sweep and keep house cleaner. Love it.

Greatly improves air quality. Purchased via Amazon Prime two months ago, new, for 299. Prices fluctuate a lot on these, and other vendors charge even more. In a dry climate, on high fan speed (I have it in a larger bedroom and as such it really only works on high) you have to refill the H2O tank twice a day. It's worth the hassle. Over the years I've tried Winix, Honeywell, Friedrich, Austin Air, Holmes, and others too cheap to mention. This Sharp has worked the best of the bunch. Not a miracle worker, but does what it says it will. Vastly superior to Winix, no contest. Filters - expensive & not available everywhere. Wish the unit came with at least one extra charcoal filter. 3-5 year filter life seems impossible, could happen if your air is already pretty clean. I'll be surprised if I get two years out of this filter set. Looks great, which is a nice bonus. The color-changing air quality indicator is a very nice feature. The clicking of the Plasmacluster is noticeable on lower fan speeds. The unit is designed & built well. Plastic, but doesn't feel cheap. Recessed handles make it easy to move. Really has improved the quality of sleep in the bedroom.

I bought one Sharp KC850 U and the larger KC860U. Both did a nice job to clean and humidify the air in my music room. They are quiet and decent looking. HOWEVER, the units exhibit an error message "E2" which relates to an "abnormal humidity filer". After cleaning the units, installing brand new filters, the rror message comes back after ca. 2 minutes of use. The customer service guy whom I called is incompetent to explain the reason and remedy for this issue beyond assuring me "so sorry for the inconvenience". It's one of those who live and work somewhere in a telephone center near the Bollywood productions, you know what I mean... The suggestion to go to a "repair center" is an insult as everyone knows that smaller appliances like this trash can't be repaired, but become obsolete quickly. THIS IS REALLY SHARP!

I have had this product for about a month now, and it works quite well. I live in Salt Lake City, which is basically a desert environment at an altitude. It gets quite dry. I bought a humidistat, hygrometer, or rather, a device that measures the moisture in the air. I have tested this device and in about an hour, it took a 200 sq ft room from 20% humidity to 45%. I have no real way to tell if it cleans the air better than just a normal HEPA filter. However, I do seem to wake up less congested. That could be an artifact of the humidity. The filter it uses to generate the humidity is also cleanable. Most humidifiers will calcify from the hard water, or leave a fine white residue all over your house. This filter I guess can calcify slowly (haven't cleaned it yet). Normal household science would dictate to let it sit in some vinegar and/or ascorbic acid (lemon juice) to clean it up and return it back to normal functioning. Why is this not 5 stars then? Two main reasons: 1.) How is a 350 dollar item NOT programmable? I have a cheaper air filter device from Honeywell that is programmable, and this feature is amazing and works well, saves, energy, etc. A giant let down in my opinion. 2.) At night, this things plasma generator starts to harmonize in its plasma job. Kind of hard to explain, but you can hear the plasma device working when you first turn it on. It sounds like little clicks and sometimes a low level buzz. However, at night, these sounds go from being separate and every few seconds, to all at once and it has woken me up more than a handful of times, forcing me to stop running it at night. Running it at night is probably ok since it generates low levels of ozone, which is how it destroys the mold/spores/etc. Ozone also can destroy tissue at high levels...just a heads up. Other than that, it is a nice little device.

So many air purifiers in the $100 to $300 range are essentially the same thing: fan + HEPA filter + carbon pre-filter. You'd think for that much money there would be more to it. On top of that the designs are typically more industrial than consumer oriented. While Sharp KC-850U at its core is still just HEPA + carbon prefilter, it's leaps and bonds better in all the other regards than the market norms. Pro: * The embossed front panel design looks clean and modern * It has sensor that monitors air quality and humidity and adjust itself accordingly * LED light's brightness can be adjusted and turned off Con: * The humidifying functionality is rather weak, it's not enough to replace my stand alone humidifier in the living room * replacement filters are expensive, according to the manual the HEPA filter (around $100) and carbon filter (around $60) good for 5 years, humidification filter ($35) is good for 2 years. You can wash the carbon filter and humidification filter, but in my experience they can only be washed so many times before they wear out. * These Sharp air purifiers are far from mainstream, makes me worried how long I'll be able to purchase the filters before they are discontinued I'm tempted to -1 star for the lackluster humidification performance, but the unit is so well designed with great attention to detail comparing to everything else I've seen, it deserves a 5.

We moved from FL to NV and the humidity change really affected us as well as just being in a dusty environment. We put this in our master bedroom and it does a great job to clean the air and add humidity which has made it much easier to sleep. It meets our needs. For reference, bedroom is roughly 20' x 18' with 16' ceilings and a joining 20' x 8' sitting / media room.

This is certainly a high quality product than can filter the air well. My problem is with the humidifier function, it features a spinning wheel type filter which absorbs the water, you can hear this spinning at night very clearly and there is no way to get rid of the sound without turning off the humidifier function. Couple that with the loud "gurgling" sounds of the water tank every so often and it just was too much to hear at night. We ended up returning the product and going with the Brondell Revive.

The Sharp humidifier has been an exceptional addition to my home. It’s quiet, powerful, and keeps the air perfectly balanced without feeling damp or stuffy. The water tank lasts a long time, the controls are simple, and the air just feels cleaner and more comfortable. It also runs smoothly with no weird smells or noises. Overall, it’s a reliable, high-quality humidifier that works exactly the way it should, and I’m extremely happy with it.

Half garbage. I bought it in November 2023 and I'm using it only during the winter as a filter and humidifier. Now there's a noise coming from the electric motor that is used for spinning the water filter inside. Due to that noise I can't sleep in the room when using the humidifier function. For a 700 dollar device that was used intermittently for 2 years, I consider that is a piece of crap. Shame on you Sharp.

This is is my second unit and is needed to keep humidity at desired levels. The design appears to be exactly the same although my first unit is well over 10 years old. It is built well, works well and worth its relatively high cost if you are thinking you will need its functions for many years. It does have some drawbacks: there are several filters and some (HEPA) are expensive and you have almost no choices in where to get them; there is routine maintenance required (anything with water almost always does) at least every two or three months; and, the water tank needs refilling twice a day (could be bigger). Final thought, I snapped it up when I saw it available and had the money.

Had cough and stuffy nose for two weeks which I suspect was due to very dry air inside house with the heater being on 24hr. When the humidifier arrived, immediately turned it on and after 2hrs my room had fresh smelling air. Had a good night sleep and when I woke up my palate did not hurt like it usually did before the humidifier. Very helpful with getting rid of kitchen odour, too.

It is extremely quiet, but you do notice the difference in air quality.