Buy the OSKAR dehumidifier!
591426
The OSKAR is a great humidifier.  I've tried lots, from the heated steam, to just about everything else.  Easiest, cleanest, and works amazing.
4961026
I have been running a Lasco humidifier for over fifteen years. If this were my first one, it would be my last.

1) Something as simple as installing the rollers was a major task, because they do not fit properly in the plastic piece they go into.
2) Water tank (for lack of a better name) is WAY too small for a whole house humidifier.
3) Advertised as quiet . . . . really? My old one was less noisy than this one.
4) Humidistat is by guess. The old one had a digital readout where you could set it to what you want. This one you guess, and adjust, and adjust.
5) Old one you could check the water tank level at a glance, not this one.
6) Filter size is about one half that of the old one.

This one is rated as "up to 3200 square feet". I have 2/3rds that and it will not keep the humidity above 35%

Least you now be saying "WHY didn't you just get a new one, of the old model?"
BECAUSE THEY NO LONGER MARKET THEM!
If they did, I would have gotten one of those.

I do not recommend this unit to anyone that really needs humidity in their house (like CO in the Winter).

Update 12/2/16:
The web page says "3 speed evaporative recirculating humidifier for spaces up to 3200 square feet"
NOT EVEN CLOSE!
I have 2,100 square feet and this unit is . . . inadequate . . . for that.

Update 4/11/17: Downgraded from 2 to one star. Sad it doesn't go lower.
Would you believe . . . . a fifty cent part, that rusts, stopped it from working AT ALL!
A stupid little spring, that sits in the water, rusted to the point the flapper valve it controls would not open.
Valve closed and there is NO water to evaporate. Kept checking to find out why the water level was not going down... Once I found the rusted spring and managed to get it somewhat working, I got some humidity out of it. . . For one day. . .  Been going after this thing for a full week. EVERY day you have to clean the spring and free it up. A day later it is not working AGAIN!

 To me . . . . buy ANY other humidifier. This one is worthless.
3559922
Who is Square Trade??? I'm with the others who were, shall we say, confused. It's not the company bc I have no idea who they are. I purchased a Frigidaire dehumidifier and added the extended warranty. They should post somewhere who the warranty company is since I assumed it would be Frigidaire. It took me aback for a moment but I suppose all is well now - that is unless I have to do the whole confirming product and getting emails from yet another company - ugh.
2910426
Seriously?! Get the Lux WIN100 programmable outlet thermostat on here for 30 bucks and don't waste your money unless you need something with a humidity sensor built in.
4419109
I am a violin maker and humidity control is essential to my work. I purchased this dehumidifier after several disappointing purchases from other companies. I have Albert in my workshop all the time, running  intermittently. Noise was a huge deciding factor for me and at around 40 decibels at the highest setting this unit is amazing. You get what you pay for!

The U.S. representative is exceedingly helpful and professional. After three years of hard use in a dusty environment this dehumidifier continues to preform well.

It does not have an internal pump to automatically remove the water, but I bought a separate furnace condensate pump which serves the same function. The pumps in dehumidifiers are notoriously unreliable anyway, so I kind of like the idea of a separate pump that can be replaced if it breaks.

My one complaint is that the hygrometer reads about 5% high, but hygrometers are very difficult to calibrate, so I will cut them some slack. In a perfect world you would be able to match the display on the unit to a known, accurate source. I just set the dial accordingly.
3766864
This is my second Frigidaire Dehumidifier. Unfortunately the 50 Pint unit (sorry no model #) I owned prior only lasted about 5 summers. My oil burning furnace keeps the basement dry in the cold weather months. The old unit took to icing-up even though it was advertised to operate w/o icing down to 40 Deg. F. I cleaned everything as directed, but it still iced-up which was a real big pain when it came to emptying the reservoir. The float switch would shut the unit off when the reservoir was full, but then the ice would begin to melt and raise the water level in the reservoir further to a point where it was impossible to prevent significant spillage each time it needed to be emptied. So, I scrapped the old unit and bought the FAD504DWD.
To begin with, the lower power consumption on this Energy Star rated appliance is a big plus. This unit, which is used in a medium sized basement, fills the 2 Gal. reservoir twice a day with the humidistat set at 50. Next summer, I think I will attach a drain hose to it since I have grown tired of the twice a day draining the bucket routine.
The unit is very quiet and I can't hear it operating unless I am in the basement. The depth profile of the unit is very narrow which may be a plus for some applications. I wish I had hard numbers for you on these last points since it is important if you plan on operating the unit in a living space. I use mine in the basement (which I don't qualify as a living space in my house). This unit moves a lot of air. Unlike my previous Frigidaire model, this unit discharges dry air out through the top. My old unit discharged out through the side, which always seemed strange to me. So, you need a fair amount of unobstructed head room above the unit if you want the dry air to distribute efficiently throughout your living space. The discharge grille on this unit is at least 25% larger than that of my previous Frigidaire model. Finally, keep in mind that the dry air that this unit discharges is quite warm. I have not measured the temp., but I would say it is somewhere in the range of 80 - 90 Deg. This is not a problem for me with the unit operating in the basement, but I would surely choose an air conditioner over this (or any other) dehumidifier if I was going to use it in a living room or bedroom. Hope this helps.
Jimmy
4032446
I have what is known as a dry well. That's a concrete tank with slots that does exactly the same thing that a drain field does; it gets rid of water in a septic system. Years ago (maybe 8 or 10), the dry well was totally backed up; all the slots were clogged. After some frantic desperation, I decided to take a chance on an aerator. It pumps air into the the dry well just like an aquarium pump aerates the water in an aquarium. The theory is that the more aggressive bacteria that will "eat anything" CANNOT live unless there is oxygen in the water. You could search this; it's backed up by science. What do you know!?? It REALLY worked!! That dry well, that had needed to be pumped (at big expense) every two weeks or so, has now gotten rid of water and has not needed to be pumped at all since the installation (I installed it) EVEN ONCE! That original aerator had cost me close to $1000 and it was designed not to be taken apart. Only I got taken. Great customer service during business hours as long as you send the unit back to them to be repaired. I'm very glad I'll never know how much that would have cost. Fool me once.... and all that... I researched and ordered this. Consider the solution to my problem to be fine tuned!
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This thing is great in several ways. One thing I really could have used is a specification on the depth it will pump to BEFORE HAND. That's my only negative; that it wasn't listed anywhere before I bought it, making me chew my fingernails needlessly. The great thing is that is IS in the literature that comes with it!! This one is rated at seven feet. The next one up (AP-40) is rated at 10 feet. I'm sure it would pump deeper than that, but I'm also sure too much pressure (depth) would stress the rubber diaphrams in the pump. I done good!! But it was scary. It pumps more air than my old one did. It's even quieter than my old one was (until my old one broke, of course). It's all plastic outside and it appears to be more or less hermetically sealed, in any case it's fanless and self cooling. It takes about 20 watts, which is about a third to a quarter of what my old one took. The rebuild kit is available for a few bucks and the manual actually tells you how to take it apart and gives you the URL for the company and, sure enough, there's the rebuid kit. My AP-20, by the way, has been sitting outside without an enclosure (even though that is recommended in the manual) since I bought it a couple months ago. Unlike my old one, as I wrote, it doesn't have a cooling fan. There have been very hot days and it's rained and thunderstormed a couple times. You're only taking a chance in that mine hasn't been covered by snow yet. This time I didn't have to do anything else. I just connected it to the plastic tubing that already ran into the tank through a hole I had already drilled in the lid down to the aerator stone already in the tank.
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I couldn't be happier! Absolutely no complaints. So! There you have it! Here's a brand new application for this thing and my complete recommendation for the unit even as a fish pond aerator.
1899256
This has been one of the best investments that we have made for our home.  It has helped keep the humidity down in our basement and with it, the musty smells are gone, too!  Our first purchased dehumidifier 30 years ago, we paid $400, it was to be the "top of the line".  It did have power, but we paid dearly in our monthly electricity bills.  We would have done better, just keeping the air conditioner on.  This product has barely been noticeable on the monthly electric bill.  It is easy to move, easy to empty and you will not be disappointed with your purchase.
4854832
The Keystone dehumidifier is great. We a a ceiling problem due to moisture in the room. It is just amazing how much water is removed.
3493508
I bought this dehumidifier in July 2014.  It was one of the more expensive models on Amazon, but I figured, you get what you pay for, right?  Well, I got a dehumidifier that worked well for less than two years, and now is a useless piece of junk that I have to dispose of.  Winters in CT aren't humid, so my dehumidifiers don't run in the winter.  When it was time to start using it again this spring, it won't run for very long before the code "EC" shows up and it stops.  If you look at the manual, this means that the ambient temperature is too low for it to run.  Since it hit 90 last week, I thought, "That can't be right" and did some searching online.  Apparently this is a prevalent issue with this brand, and, while it probably can be fixed, it would likely cost more to fix it than it would to replace it.  So I'm replacing it.  With a different brand.
2644444
If you are ok with a dehumidifier working for less than a year, then buy this. If you prefer a higher quality device that is dependable and will actually work beyond a year's time, buy a different brand.
914621
Would recommend to a friend. This unit purchased last year was heaven sent. I set the humidity at 50% for direct drain, no need to empty bucket for use in my 80+ year old mothers condo basement, and it has operated perfectly going on two years.  I previously purchased two other name brand dehumidifiers from reputable stores. Both failed in their operation within two years.
3349527
This dehumidifier is awesome! Our basement got very damp and extremely musty/gross smelling when our old dehumidifier stopped working properly. Within 12 hours of having this running the humidity in our basement dropped by 20%. No more dampness and no more gross smells! It runs pretty quiet too (compared to ones we've had in the past) which is an added bonus. I highly recommend this dehumidifier!!!
1893737
These were a scam! My humidifier was doing fine (about 3 days), but I decided to "get my monies worth". Guess where the scum started growing first?! Yes, right where this piece of trash was. Worst yet, I cleaned my unit with vinegar and scrubbed the spot. The scum came back in a day, that's one day! 2nd cleaning and still SCUM! Finally we went out of town for a week and I laid out my unit in the bathtub to air dry. The scum finally stayed away.

I've heard a cab full of hydrogen peroxide works and I tried it. But really, I think just plain water and keeping your hands out of the unit is the best.
My unit is a Lasko and fills from the top. I really think since my hands never touch the water or tank my water stays clean much longer.
FYI I purchased the Lasko through Amazon. It's a bit more $$, but worth it!
2243672
I have done extensive research and cannot find an American made potable dehumidifier, other than commercial units. Do you know of one? This and other products like it have no long term reliability. The refrigeration section will not hold it's Freon. As with many American made products the manufactures have went to China to get there products made. They substitute cheep steel components (which corrode and leak) for the brass, aluminum and stainless used in US refrigeration products. Great design and efficiency, but it will not last. I'm on my third one in 2 years. I bought the extended warranty and a good thing. I have heard the same story from many other people and with many other brands. Before the Soleus I had an LG, same story lasted a year, the compressor would run but would not condense water. Before that I had two American made ones, they each lasted over 30 years. The fans wore right out but the compressors still worked. I decided to update to new technology, Ha! All you can do is look for the best warranty, good luck.
1656966
This dehumidifier is The Little Engine That Could. I sat it in a place that holds moisture and it sucked that water right up! You have empty it frequently but I don't mind.
3435514
I extensively researched dehumidifiers and am pleased to say that after two months of constant usage, the Comfort Aire is doing a great job. It works as promised, works quietly and efficiently. I have also found that many of the dehumidifiers that have high ratings often fail in their second or third year. Frigidaire (FAD704DWD) in particular has no service and creates a unit which is a disposable piece of junk. I have higher expectations for the Comfort Aire since they provide a service network. I'll let you know in two years.

Two years later: Ok this is junk. Their customer service is awful. Great at making you jump through hoops and then doing nothing. So here's my advice. Buy any dehumidifier and the additional warranty. Use, wait for it to break and buy a new one with the warranty money. Rinse and Repeat.