This dehumidifier is extremely POWERFUL. Easy to move around with the wheels and can be picked up with the straps. I love the double filter so the MERV 10 can last longer. I haven't used them yet, but the back connections (see my pictures) are very nice to have.

I purchased 2 of these units after my basement flooded from a sump pump failure. These arrived fast and we're packaged very securely. These really soaked up alot of water and my basement was dry in a about 6 days running continuously. Most of the area was carpeted and these units really worked well.

I splurged for a high end Alorair dehumidifier after my consumer grade unit gave up the ghost. The unit appears to be well made and perfect for my basement application. I installed the unit with the drain line to my sump pump - the unit has no holding tank to empty.The unit ran fine for a couple of hours, then locked up. Power switch, up/down humidity setting buttons were all inoperative. I could reset the unit with a power fail and it would run again for a few hours until it locked up again.I contacted Amazon with the intention of returning the defective unit. Much to my dismay, the 50 pound paperweight return trip was on MY Nickel - Alorair does not pay for return shipping.I then contacted Alorair through the Amazon messaging channel - and immediately got an automated response from Alorair Service. They asked for additional information and if possible a video of the symptoms that I experienced. I filmed a short video detailing the problem with the locked up unit, and after a day or so, Sam from Alorair Service contacted me to ask if I was willing to take the unit apart to replace the circuit cards inside rather than incur the inconvenience of shipping a 50 lb unit back and forth.As a retired service tech, this is no problem for me. It was very straight forward, and Sam from Alorair provided YouTube videos covering disassembly.However, if you are squeamish about unplugging and replacing electronic circuit cards, it may be a bit of a challenge - see photo's of the circuit card and the plugs attached. Once I replaced the circuit cards, the unit started running normally.One item of note - the Humidity setting has a +/- 3% tolerance, so if you set the unit to 45%, it will turn on when the humidity sensor reaches 48% and off when it reaches 42%. Sam from Alorair explained this operation to me in a separate email.Overall, the unit appears to be a very good unit, I look forward to a drier and more comfortable basement.

In spite of some problems that I initially encountered, I believe that for its operating capacity the Alorair H55 (Blue) Sentinel dehumidifier is one of the best products on the market place today.Why do I think this dehumidifier is so good? To be honest my past experience with the entire dehumidifier manufacturing industry has not been a happy one. In the past 10 years I have bought (and obtained through warranty exchanges) over 8 dehumidifiers. I have a relatively small encapsulated crawl space (1,400 SF) which I kept dehumidified using residential 35 Liter per day units. The units that I bought were manufactured by Frigidaire, Friedrich, and Hense. They are all junk! They are designed to fail within 12 to 24 months. Although one would think with the vast choice with the plethora of various manufactures of residential dehumidifiers that quality would vary; having removed the cover off of these failed units it appears that the functioning components (compressor, condensing, and evaporating coils) are all the same and probably come from the same factory located somewhere in China. Why do they fail within such a short period? Bad design. (1) The evaporator coils operate under high pressure 410 Freon, with thin walled copper tubing (environmental and energy efficiency improvements), packed with aluminum cooling fins for condensing room humidity, all held together with carbon steel plates on the ends of the coil unit. The high pressure Freon environment within the thin copper tubing fails within 24 months due to formicary corrosion caused by the dissimilar metals (aluminum, copper, and carbon steel) in contact in a damp environment setting up a corrosion voltage differential on the evaporator coil. (2) Placement of the humidity sensor directly in contact with the evaporating coil in the upper corner, insures multiple and repeated false starts for the dehumidifier compressor. When the unit shuts down after reaching proper humidity levels, the evaporator coil is still wet, and as it drys out the humidity released will send a false signal that the room humidity is too high and thus trigger the unit to start up. Worse when moisture evaporates, the resulting water vapor is lighter than air and rises and triggers the sensor. Excessive cycling on and off results. Lastly it is impossible to repair the units when they fail. They are intended to be disposal products. When I hauled them off the the landfill (as hazardous waste) it was shocking how many failed dehumidifiers were stacked together at the landfill.I finally decided to quit buying junk and started researching crawl space dehumidifiers. Most crawl space dehumidifiers are overpowering for my needs (100 ~ 200 pints per day). The Alorair HD55 is one of the smallest crawl space dehumidifiers on the market. And it is a quality design. This unit has a coated coil (in which the aluminum fins and copper tubing are coated) and is held together with stainless steel plates all of which protects against premature evaporator coil failure due to formicary corrosion. Secondly the humidifier sensor is separated from the evaporator coil and is located on the lower end of the unit to minimize triggering by evaporating moisture from the evaporator coil. Additionally a remote controlling sensor is available as an option with a 25 foot cable to enable full separation from the senor from the evaporator coil. The unit has a MERV 8 removable filter to keep the coils clean. It is very quiet when operating. The only way for me to tell if the unit in the crawl space is running, I have to put my ear against the floor to hear it as the sound is too faint. Additionally, I highly recommend the hanging unit when installing. The rope system minimizes the conduction of vibration, and it raises the unit to get more height when running the gravity drain pipe. Additionally operating the unit directly below the floor joists is more efficient as humidity rises and can be more effectively removed during operation, than if the unit is located on the crawlspace or basement floor. Another plus is that while the humidity sensor operates to the nearest 5%, the actual humidity setting can be set within 1% intervals. I have a separate hygrometer sensor in the crawlspace which measures humidity within 1% intervals. This unit is able to keep a steady humidity level of 41% with a variation of only 1 % +/- when using the remote controller and keeps a steady 40% with no variation when using the sensor on the unit. None of the other junk units that I used to own could keep a steady humidity level, as they operated with variations of +/- 5% at a 45% setting.Yes I did have some problems as the first unit delivered failed almost immediately It is not clear whether the unit was defective or whether it was damaged in shipment. I suspect that damage in shipment is a common problem. The support staff was very responsive and arranged to get a replacement unit shipped to me in two days. I was also given a return label for me to ship the defective unit back at no cost. Replacement unit is running great. I would highly recommend that you save the shipping box for any future returns. In spite of this I still recommend this unit.