This thing is amazing. Our 2 bedroom apartment was at 81% humidity ...
583476
This thing is amazing. Our 2 bedroom apartment was at 81% humidity and because of this tends to have some pretty intense mildew issues. this got the humidity level down to 45% in a matter of hours. We were amazed by how much water it sucked out of the air (it almost filled up the first day). It's also pretty quiet. My partner turns it off when he sleeps because he likes complete silence but it doesn't bother me at all.
330372
I decided to purchase this item while deployed to an extremely hot and humid foreign country. The humidity was so bad that air conditioning condensed water vapor all over every surface of my 10 foot by 10 food accomodations, leaving a film of moisture on everthing and my sheets and blankets DAMP, 24/7. Sleeping in a wet bed is not fun. This small dehumidifier changed all that. After it arrived, I turned it on and left for work and came back to a whole different situation. From that day on my sheets were warm and comfortable and my room bone dry.

It runs extremely quietly - you can hear it if the room is quiet and you pay attention, but otherwise you'll forget it's there. As for how often you have to dump the water, even under this heavy workload I only have to change it every 4 days or so, and it takes all of about ten seconds. When it's full, it stops running and an easily-noticeable red light comes on. Dump the water, slip the tray back in and bam, it's going again.

I don't think it's going to dehumidify your whole house (...or would it? I'd be interested to find out), but it performs an excellent job very quietly for single rooms.

Easy 5 stars between price, convenience and effectiveness.
732793
I've in the second season of using this humidifier (I only use it late fall through early spring) and I really love it.  It works great and I love that you can set it where you want it - I leave it on all day on a very low setting and come home to a comfortable apartment - it helps save on turing up the heat, too.  It's safe and reliable, and seeing that mist come out really soothes my soul!  Just a few caveats:

1) Expensive accessories - silver stick that is supposed to replaced yearly (tempted to skip), cartridges.
2) White dust
3) Cleaning is a bit of a production with EZ Cal packets - nothing too horrible, but adds to your "to do" list.

This machine is quiet and it does a terrific job of keeping our air in our entire apartment from becoming painfully dry.  I think it even prolonged the life of our Christmas tree last year.  We have a small apartment and I use it in the main living area during the day and bring it into our bedroom at night.  It's not the prettiest, but it's not the ugliest, either.  I can't say how it would work in a larger space, but I only use it on the low mist setting and it quickly brings the humidity in the room up.

Like the previous reviewer, I have started using distilled water and ditched the demineralization cartridge, because our water is so hard.  No more white dust!  True, we have to pay for the water, but we save on the cartridges - and the machine works more efficiently, too.  (This is also recommended in the manual if you are worried about voiding your warranty or damaging your machine).
2207004
if you live in the northeast of the us you're likely familiar with the devil's handiwork, aka "summer". it's been so disgustingly hot and humid and my family recently moved into a duplex home where the must and wetness and heat rise straight to the bedrooms. my room is small and i only have one window i wanted to keep the freedom of opening/closing said window as i pleased while also not suffocating from the lack of air flow. this fan, this is a gift from heaven.

it has a remote so i don't have to lift my sweaty body off the comfort of my bed to receive salvation from the heat. it has so many settings with little beeps and lights that distract me from the fact that the sun is trying to kill us six months out of the year. i love that it's compact and rotates without rotating. ive been recommending this thing to everyone i know despite the price fluctuating so aggressively here on amazon. either way, it's worth a try because i literally wouldn't have survived this long without this fan to protect me from the brutal heat global warming has brought.
2482558
I am very happy with this unit.  I bought it for my 450 sf basement apartment in Washington DC which has hot and humid summers.  It easily keeps my apartment at a chilly 72 degrees even when its 96 degrees outside.  Of course being in a basement helps.  The condesation mister seems to work very well.  I have been running it for a month and haven't had to empty the tray even once.
2979187
I bought this product August 20th, and I can tell you it has made this humidity a reason to come home. I can now stand being in my room all day. My room temp is between 80-92 and with my new product it stays between 76-78, perfect temp!!!! I'll keep an update in a couple of months. It also helps, to keep your room dark, so cover your windows for example: I covered mine with the very box it came with so, portable A/C + Dark room = tolerable room.
138375
We bought this the beginning of summer here in Phx,  Az. We saved about 40 to 50 bucks the first month we didn't need to use the ac. we live in a very small apt and it cooled almost to the point of being cold... we used the fan only as the humidity crept up and it was a life saver. we normally have lots of fans on the floor but we were able to do away with all that mess on the floor here and there. It is easy to fill with water and easy to move. Even though our apt is very small it is a great investment in comfort in the early summer. Its now october still using the fan and starting to use evap as the humidity creeps back down.  Would recommend highly.
2193056
My apartment is under 300 sq feet and this brings the humidity up a lot during the dry winter months. Very easy maintenance and looks great. Very quiet and lasts well throughout the night.
1922797
This thing is amazing! Highly Recommend! Can't believe how fast it goes up! No issues at all keeping all this space warm! Windows galore, plenty of space...I think we're gonna put cots inside to take our afternoon siesta's! I'm 6'3" and can stand up inside as long as I don't walk to the outermost edges...
4397479
WOW!! This little unit is awesome! I can finally feel comfortable in my home again! My living area has an open floor plan with the majority of it having 10 ft ceilings and this thing had ~600 sq ft of living space feeling nice and cool in a matter of minutes! I do not find it to be as noisy as some complain it is; unfortunately, unless you have a heat pump, you're going to have to deal with some noise from an AC unit. I set it up by myself in a matter of only about 20 minutes - although it was pretty heavy, but I didn't have to lift it too far. My only complaint is that I didn't purchase it sooner!
2853972
We are on our 2nd winter with this and it keeps the bedroom nice and humid.
1104407
This stuff is awesome for a small apartment! Really saves the air quality. I had my doubts but it really works wonders. We have been using this bottle for almost 2 months and it is about half gone. I will be buying more when it runs out. Well worth the money. We will be getting this for everyone for Christmas.
3533652
So let me start by saying my living room and kitchen has NEVER been cooler and more pleasant when we have had some 80 degree days and my apartment heats up hot.. I am so happy to have been given the opportunity to review this air conditioner as I have not used one in my place before.  There are some issues though and although I have the perfect sliding sideways window there was a large gap at the top where I had to have my handyman install a insulated panel and also had to anchor it to the ledge as my ledge was a little narrow to hold the width of this unit. Now that I have the installation details out of the way and a great process for removing in the non-warm months I am a happy camper! ( not taking away stars, as that is my issue not a flaw with the air conditioner )

The instructions are easy to follow and I am surprised with how quiet it is for the cool air it outputs.  It cools fast and when I come home, turn on within 15 minutes my front room is nice and cool and I am finding myself turning the temperature up fast as it cools that quick..  I haven't used the remote wifi settings yet, I will update my review when I get more use this summer with it.  I included a picture of the way it looks in my front room window and will update with any changes or issues as always
2182449
Best $20 I've ever spent. We are on the second floor, and this summer in New York has been horrible. Our house is like an oven. And this air circulator is fantastic. The house was a lot cooler afterwards.
2924338
I live in the Pacific Northwest, an area known more for its incessant rain (at least that is what we tell the Californians) then prolonged heat waves.  No more.  Like the rest of the planet, we are having record breaking and substained highs in the nineties.  Thus, my husband and I began to research portable air conditioner units.  The WynterARC-148MS had the most positive reviews, is made in the US, and promises the most coverage under a thousand bucks.
It came on a Monday.  After setting it right side up for the recommended four hours, we turned it on.  It has been running ever since. We have a fifteen foot ceiling in our living/dining room area, and have yet to install a ceiling fan in this area. However, with some judiciously placed floor

fans, I have been able to route the cool air into other rooms in our condo.  It just hums away, cranking out that delicious cold air
Notice, I said hums. No, it doest clank, clatter, walk across the room, or sound like a landing Concorde.  It is a white noise that disappears with softly played music, the television, or conversation.  Because I am using it to cool exponentially more area then the factory promises,  it never cools to the temperature selected, nor is it supposed to.  I looked at many portable air units and they have all became a jumble, but a review I read regarding some unit of this ilk, complained that his or unit wasn't as good as central air.  That comment makes as much sense as saying  You cant drive it anywhere..The specs are clearly stated in the units description.
The unit comes with a window kit that is good for a four foot opening. There are two pieces that slide up and down, or in and out. They will fit on a four foot window.  If your window is larger, you may want an extra window kit, or make your own extension.  The unit has casters, so one can roll it to the desired location.  It does weigh close to eighty pounds. I drained the unit today (Friday) and only got a half a cup of water out of it.  I do not live in a humid climate.  If one does live where humidity is a problem, the unit will have to be drained more frequently
So, in conclusion, I must say that I am more then pleased with the Wynter ARC-148MS.  I can not find one thing wrong with it.  It performs better then its expectations in a quiet manner.  Still cant drive it.
2949128
When my 4 year old portable AC broke during a heatwave, I was forced to buy a new unit. And i am kind of glad it happened. This is much more efficient than my previous unit. It is 95 degrees outside and about 78 in my 550 sq ft apartment. I am very impressed with it so far, but since I have some previous experience with portable AC's i'd like to give a more through review.

-Packaging - This AC is very well packacked. It came double boxed with thick/ rigid carboard cornergards inside. If you cut the straps and  open it from the top you can lift the boxes up from the base making it very easy to get out of the box. I have back problems and i am not supposed to lift heavy items, so this was ,much appreciated.

-Instructions - They were incredibly deatailed, very clear to understand, and even came with a list of trouble shooting suggestions if you have problems down the road. They also make it clear that all of the parts can be repurchased. And it has an overall 1 year warranty, and a 3 year warranty for the compressor.

-Bonus - It comes with a dust cover an two plastic caps to cover the holes in the window if you are like me and like to leave in the window panel, but put away the AC for winter.

-Self Evaporating - This has two hoses, an intake and and exhaust. And the self evaporation means you don't have to deal with constantly dumping the water that collects inside the unit. If you have experiences with portable AC's you probably know it is a huge pain to constantly empty. This unit only has to be emptied if it is running over 80% humidity outside and the unit cant keep up. It will turn off and light up to tell you i needs to be emptied.

-Ease of cleaning and getting to filters - They have made the filters very accessible and easy to remove and put back in. And they give all the information on how to get replacement filters and how often they should be cleaned / changed.
2148399
My husband and I love this machine!  It probably reads the humidity a tad high (since the moisture comes out right there by the sensor) but it has improved our breathability, our plants and pets love it, and it's good for musical instruments (especially the piano)!  We put it in our great room and it fills that and the adjoining kitchen nicely with comfortable air.  I love the large amount of water it holds.  We changed the filter and rinsed the whole water areas with vinegar after about 4 months of use, but the filters are affordable so we don't mind.

Husband even points it out to guests and brags about what a great purchase I made.  RAVE review!