155 Pints Commercial Dehumidifier for Crawl Space | Auto Defrost | Timer

The durability of dehumidifiers went seriously downhill about 20 years ago. We were lucky if one continued working for more than a year, or it failed during the manufacturer’s warranty period. This was for highly rated, premium brands. After our most recent failure, we decided to upgrade to what appeared to be a much better, “commercial grade” unit and chose the Mosiell 145 pt dehumidifier for our basement. We’ve had it for two weeks now and are very pleased with the ease of its setup and performance. I have a digital temperature and humidity sensor a the basement which continuously plots those parameters. The humidity stays within about two tenths of a percent of the set value on the unit. Amazing! Durability is also of concern. The build quality appears to be very high and the manufacturer’s warranty is significantly better than what is typically offered. I have also found customer service to be quick, reliable, and knowledgeable. We have high hopes for a much improved dehumidifier experience. My only suggestion for possible product improvement would be a fitting on the drain that would couple with a standard garden hose.

I installed the Moiswell Defender M70 in my crawl space and let it acclimate for three days before judging performance, so the readings would be accurate within spec. The unit is very quiet — so quiet that I couldn’t hear it running — and it quickly became clear that I would benefit from the optional remote control pad. My decision to get the remote was twofold: I couldn’t hear the unit run, and otherwise would have to crawl under the house just to check the settings. With the remote, I can monitor everything at a glance without accessing the crawl space. The remote comes with a generous cord length, which made installation easy and flexible. After a few days of operation, both the main unit and the remote were showing matching readings. Performance has been excellent. I first ran the unit at a 45% humidity setpoint, then later adjusted it to 54%. The M70 consistently held the space right around the setpoint — for example, at 54% it was reading 55% (about +1.8%), which is well within the manufacturer’s ±3% accuracy range. That gave me confidence that both the onboard controls and the remote are reliable. So far, I’ve been very pleased with the quality and fit/finish of the M70 itself, and the remote adds a lot of convenience. Customer service has also been excellent — I’ve contacted them by email and phone, and they’ve been easy to reach and very responsive. If you’re planning to install the M70 in a crawl space or other hard-to-access area, do yourself a favor and get the remote pad. It really makes day-to-day monitoring effortless.

At first I wasn't impressed and was planning on returning it as I didn't think it was removing the moisture as advertised. The fault was mine, it was my lack of understanding of how it should be setup. It's not an AC unit so the dry air it produces needs to be vented into the area you want to remove moisture from. In my case it's my basement. I, not understanding this was venting the dry air coming out of the unit to the outside of my basement thinking the heated air should be vented outside like the portable AC units do. I couldn't get my basement below 60% humidity doing it this way and the unit was pulling about 9 gallons of water out of my basement in a 24 hour period which is a lot of water, I measured it in a 5 gallon bucket so the number is not a guess. After I figured out my mistake and removed the vent hose venting the dry air outside, my basement is now at 42% to 44% humidity keeping my whole house below 60% humidity. My house (3 stories) including the basement is about 2300 square feet. This unit really works well and it's quiet. I live next to a lake and have lots of trees on my property so humid air is expected. Something worth noting is that the temperature and humidity meter inside the unit measures the temperature and humidity of the air coming out of the unit not the room temperature/humidity. I use separate meters on each level of the house to monitor temperature/humidity. This unit is of higher quality than the units you purchase from Lowes or Home Depot and it has a better warranty. I recommend it as this fixed the problem with humidity in our home.

Order placed for the Moiswell Defender M70 on July 17th. Received the order on July 26th and waited the recommended 24 hours before installing on July 27th. I followed the manual directions for installing the unit. When I turned the unit on the fan had a knocking sound and which seemed the fan to be out of balance. I called the customer service at Moiswell. The next day I received an email asking me a few questions and to send a video of the unit with the knocking sound. On July 30th I received an email from Fiona asking if I wanted a new unit or a refund. I asked for a new unit. The new unit arrived in a few days at which time I followed the installation procedures as before and the new unit is working great. The unit is quiet and is very quick to bring down the humidity in my basement. Like other reviews I have used several different home type of dehumidifier and all usually fail after a couple of years. Since this is a commercial unit I hope to get may years of service and if I have a problem it seems this company prides itself on customer service this my first experience. Fives all the way around.

Short story - I'm really happy with this dehumidifier so far. For reference, my basement is a little shy of 800 square feet, and it's gotten the humidity down from about 66% to 41%. When my old dehumidifier started to go downhill, I looked at a lot of options for replacement. First, I tried a residential dehumidifier that was supposed to cover 2500 square feet, but from the moment I plugged it in, it struggled to get my basement anything lower than 55% (and normally hovered around 65-66%). Back to the computer to do more research. The general feedback I noticed was that modern residential dehumidifiers are a bit untrustworthy. It seems like most of them are built to fail within a year or two, and even ones that were highly reviewed still had plenty of issues with mold and related recalls, which made me nervous. A few people suggested looking into commercial dehumidifiers, that you'd pay more but would get better quality. So far, I have to agree. When I plugged in this unit, my humidity was at 62% - and it dropped 5 percentage points in 5 minutes of operation, whereas the previous unit couldn't have even dropped it 1%. I have high hopes for this unit, and I hope it stands the test of time.

Very effective removing humidity from 1200 soft basement. Ordered this as it looks more durable, traditional dehumidifiers from local home stores are all junk based on my experience and many reviews. I hope this will last years, not months. Only thing I don't like is it short cycles a little. I have been adjusting location to have it in an area with the best air circulation. First area I tried was too secluded so it dried air in that area quickly and cycled more often, when in areas of better air circulation the run time is longer with fewer start/stop cycles. This unit beats every other dehumidifier I have owned. UPDATE - The first season unit worked just as expected. See above review following initial startup. The following spring when dehumidification was needed, the unit ran but did not produce any condensate. I contacted Moiswell directly per the warranty instructions, explained the operation and followed and reported back on troubleshooting instructions. their responses were fast, professional, clear and friendly. End result after a couple emails, a new unit was shipped directly to me, arrived faster that stated and so far the unit is working as it should. I am hopeful that this one will provide many years of service. Issue resolved to 100% satisfaction.

absolutely no problems with this after a full winter in the PNW. Kept the shipping container shop at about 35-40% humidity all winter I kept the temp a little low at 60°f.

Purchased this 145 pint MP70 for my older 1800 sq ft basement that runs very high humidity and temperature usually in the 60s, sometimes lower. The unit came and I installed after the 24 hr wait time and was impressed with the carry straps, ease of operation and quietness. After a few days the humidity was down in the upper 40s but was hoping to get to the upper 30s but would not go lower with the temp in the lower 60s. I measured the water being pulled out and it was consistently less than 30 pints per day and rated for 70 pints with temps in the 60s so I was wondering why. I messaged customer support and received a quick response and we troubleshoot ed for a few days with a nice person by the name of Alison who was very polite, unassuming and great to work with. I just didn’t understand why more water wasn’t being pulled out of the air or at least max out at 70 pints if it couldn’t get to my desired RH. Alison sensed my dissatisfaction and offered a 100% money back without me asking and I was impressed with that even though I could have just returned it thru Amazon without problem. I decided to try a larger unit the MP 100 and stay with this company because of their customer support and we will see how this one works and send another review later