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Availability:
In Stock.
Arrives
Saturday, Oct 10
Color: Blue
Features
- Super Convenient Usage: This high-quality dehumidifier is adjusted simply to the ideal humidity setting to minimize moisture and reduce odor. The MERV-1 Filter can protect internal components from dust when dehumidifying. The most convenient point is that you are not requested to pour away the water every hour like a typical domestic dehumidifier, there is no tank inside, it drains automatically
- Automatic Defrost: Our advanced auto-defrosting system continuously monitors the ambient temperature using built-in sensors. When the temperature is detected to be low, the unit initiates an automatic defrost cycle to prevent frost buildup and related issues. During this process, the compressor temporarily stops while the fan continues to operate, allowing the frost to thaw. Once the defrost cycle is complete, the dehumidifier resumes normal operation. This feature conserves energy and helps extend the lifespan of the unit
- Same Fit for Crawl Spaces: We designed this professional dehumidifier with the modern consumer in mind, smaller size, compact design, rugged handle, easy and safe to transport from job to job, and even from downstairs to upstairs. All special features make it the best for crawlspace, basement, and commercial applications, auto defrosting system, optional remote control system, strong as the tank, Low-temperature operation, cETL
- 6-Year Limited Warranty & ETL Listed: This AlorAir crawl space dehumidifier is ETL listed for safety, backed by 6-year limited warranty - first 2 years full coverage with professional customer support ready to help whenever you need it
- Kindly Note: To qualify for the unchargeable filters, add both the dehumidifier and the filter to your cart. The filter will not be charged at checkout. Please refer to the product details page for methods.
Description
Suppose you've been struggling with excess humidity and moisture in your crawl space, basement, garage, warehouse, factory or store, AlorAir's Crawl Space and Basement Dehumidifiers Will Solve Your Moisture and Humidity Problems! Although this commercial-grade dehumidifier is quite compact, it doesn't sacrifice water removal capability, removing up to 113 pints of water from the air per day (53 Pints/Day @ AHAM), is very quick and effective, and works up to 1,200 square feet, it's very convenient to use. Kindly Note: To qualify for the unchargeable filters, add both the crawlspace dehumidifier and the filter to your cart. The filter will not be charged at checkout. Purchase separately according to your basement or crawls space dehumidifying needs. Optional Remote Control (Buy Separately): The Remote Controller connects to the dehumidifier via a 25' CAT 5 cable, enabling remote control and monitor your Dehumidifier. Function: Start/Stop Dehumidifier, Adjust Humidity Level, Dehumidification and Duct Mode Switch, Temperature Sensor, Continuous Mode, Drain Pump (if have) Control. Hanging Kits (Buy Separately): It helps to reduce noise and vibration while the basement dehumidifier is operating when properly installed. No transfer of noise or vibration to the floor above, and getting lower space back is comfortable. Dehumidifier Ducted (Buy Separately): The air outlet is duct-able, allowing to duct if necessary. The AlorAir dehumidifiers help reduce excess moisture and protect your home. Choosing a Sentinel HD55 dehumidifier can deliver savings on energy bills without sacrificing performance, features, and comfort while protecting the environment by reducing greenhouse gas emissions. Sentinel HD55-Blue Sentinel HD55 Blue Wifi Sentinel HD55s-Gold Sentinel HD55S Sentinel HD55S Wifi Sentinel HDi65S Sentinel HDi65S Wifi
Brand: ALORAIR
Floor Area: 1200 square_feet
Color: Blue
Special Feature: Automatic Defrost, Portable
Capacity: 113 pints
Tank Volume: 14.12 gallons
Product Dimensions: 19.2"D x 12.2"W x 13.3"H
Recommended Uses For Product: Commercial
Included Components: Dehumidifier, User Manual
Item Weight: 41.7 pounds
Floor Area: 1200 square_feet
Other Special Features of the Product: Automatic Defrost, Portable
Capacity: 113 pints
Tank Volume: 14.12 gallons
Wattage: 460 watt-hours
Operation Mode: Continuous
Air Flow Capacity: 120 cfm
Upper Temperature Rating: 104 °F
Dehumidification Capacity: 53 pints_per_day
Voltage: 115 volts_of_alternating_current
Item Dimensions D x W x H: 19.2"D x 12.2"W x 13.3"H
Item Weight: 41.7 pounds
Recommended Uses For Product: Commercial
Brand Name: ALORAIR
Included Components: Dehumidifier, User Manual
Model Name: HD55 Blue
Model Number: HD55 Blue
Manufacturer: ALORAIR
Warranty Description: One (1) year parts and labor. Three (3) years parts and labor on Refrigeration System ONLY (Compressor, Condenser, and evaporator). Five (5) years parts on Refrigeration System ONLY(Compressor, Condenser, and evaporator). Please contact us at any time if you have questions. Phone , Email
UPC: 705419654751
Number of Items: 1
Item Highlight: Auto Defrost, High Capacity, 1,200 Sq. Ft., with Drain Hose, for Basement, Commercial, Industrial, 6-Year Limited Warranty
Color: Blue
Material: Metal
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 10
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Blue
This dehumidifier works extremely well and feels very well built. It pulls a noticeable amount of moisture from the air and has made a big difference in keeping the space dry and comfortable. The unit runs smoothly, is easy to set up, and seems perfect for crawlspaces, basements, or other areas that tend to hold humidity. I also like that it feels heavy duty enough for long-term use. Very satisfied with the performance and would definitely recommend it.
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Reviewed in the United States on August 30, 2026 by Benjamin
Color: Blue
Our crawlspace has always had a musty, damp smell and I could tell moisture was building up down there. Tried a little home unit before and it was a joke, filled up every few hours and I got tired of crawling in to dump the tank. This one drains on its own so I just set it and forget it. Got it running and within a couple days the humidity dropped way down. The smell is basically gone now. I like that there's no tank at all, the auto drain is the whole reason I went with it. The metal casing feels solid, not flimsy plastic, and the handle actually makes it easy to move around. Set the humidity level I wanted and it just holds it. The auto defrost thing kicks in when it gets cold and does its own cycle without me doing anything, which is nice for the winter months. One small thing, it's not silent. You'll hear it running if you're nearby, but down in the crawlspace it doesn't bother anyone. Overall really happy with it. Does exactly what I needed and the long warranty gives me some peace of mind.
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Reviewed in the United States on August 21, 2026 by Riley O'Brien
Color: Blue
I have a shallow/short crawl space (think 22'-24' inches max height) under a 1950's single story ranch home in Texas. I was on the fence about which route to go to address moisture but ended up at partial encapsulation and adding (this) dehumidifier. I say partial because I haven't insulated the walls yet and holy moly this has been a labor intensive journey that I was not willing to pay $15-$20K for. The labor is where the cost is at and this has tested my resolve. I went with this one(HD55) because there was no condensate pump which seem to fail well before the units do based on hours of reading reviews. In March I paid right at $500 after taxes (I've seen the price jump a bit now). I've added a VCMA-15 Little Giant stand alone pump that feeds into my HVAC condensate drain line, about a 9 foot run which has given me no issues and which adds more reliability. I've added a water alarm in the pan I keep the pump in and the dehumidifier sits about 8 inches above to gravity feed into the pump. I ran a dedicated 20A duplex outlet into my space to feed the unit and pump. I have two Govee smart plugs that connect to wifi and tell me the energy use of each and that I can remotely control in the event of failure. I have a tight opening that I didn't care to enlarge at 12 ¼ x 16 inches, this unit fit perfectly through it. It's absolutely miserable to crawl into and work down there but man, the savings and feeling of doing it yourself (clearly I don't value my time). But again, I'm not paying 5 figures on something I can do, I'll spend it elsewhere. My original crawl was a dirt floor and 5 foundation/perimeter vents with a decimated 6 mil barrier covering about 25% of the floor. That had the humidity at 99% in the crawl space in the summer and not too much better in the winter. I was getting ridiculously high humidity inside the house and the wood moisture readings from the joists were unacceptable. Building science has changed significantly since my home was built, yours too. It was due time to address the moisture. This unit became a necessity. I added a perimeter drain in my backyard (you need to address where the water is coming from first). I sealed the vents, I laid down a 10 mil vapor barrier and wrapped all of the 25 pillars (miserable work). After sealing up about 95% and leaving room along the walls for insulation I added this (the HD55). After letting it run for 3 days the humidity is now at 56% (i have the unit set at 50%) and it has run the entire time (which I completely understand and don't fault it for doing so). I have the humidity monitored by wifi Govee sensors that I placed down there 6 months ago, they're more accurate than the unit's internal humidistat but within an acceptable margin. This unit has been a workhorse so far. I am hesitant to give it five stars off the bat and leave y'all feeling like this is the best because of the other reviews regarding longevity but it has been a five-star experience in the time I've owned it. I've relied on the reviews others have left here so it's only fair to do my part. I will update this accordingly. I have'nt finalized the placement yet. I have it in a central location without the ducting (be aware the manufacturer specifies only 6 foot of ducting may be added), so I've held off thus far and it seems convectively fine where it is at it's current angle. Given the headroom I have I was initially going to mount it with 3/8 threaded rod with horizontal brackets that accept all thread but for now I have it 8-9 inches up on a leveled stack of insulation board I cut to fit the width/length of the unit, there are zero stability concerns and it sits plum level. If you are here I'd imagine you are facing high humidity somewhere in your home and you are going to do the DIY route - I admire that and have chosen the same. That said - would an April air unit have performed better, probably but not by much. But they have their limitations too and suffer all of the same reliability issues, probably at less frequency but I couldn't justify the $1,700 upfront cost. I may reevaluate my stance on that after the peak of this summer or the next. But for now, this unit has proven to be more than capable of a tight/shallow 1,600 foot crawl space at removing gallons of water in the air. Quite amazing when I think about it more. Would I like more features and an included remote, of course. But the $100 they charge for the remote is absolute bull 5hi7. A smart plug and wifi hygrometer is the same and less expensive. But at this price point, I am pleasantly happy, so far. The unit seems well put together and fits into my opening. It is a slight hum that you'll barely hear above and soon not notice at all. Best of luck on your moisture removal journey. Ultimately, if I pay hundreds for anything, I expect it to last - you and this company will hear about it if it doesn't. But so far I am content and imagine you will be too. I just checked on the unit and didn't bring my phone down to take pics but I'll upload some later of the actual unit. I did add the "results" from the hygrometer and a pic to show you the constraints. Regarding efficiency I've uploaded a pic from the smart plug showing the electrical use - it'll end up being about $20 a month if it works as much as it does daily (it won't have to maintain that usage 24/7) but I am showing you the peak. (Edit from 18 months later - ZERO problems and it's still humming along. I'm happy.
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Reviewed in the United States on April 8, 2024 by Erik in Texas
Color: Blue
Purchased the HD55 in December, ran it for a week and it makes great Ice! My Shop is 1728sq ft, outside temp has been averaging 48°, inside shop temp is 55° since I prefer a cooler shop, the Humidity is at 72% since my Wal-Mart no name 70 pint dehumidifier died. It lasted 3 years then quit working, but kept my shop at 45-51% humidity without issue. I decided to invest in a commercial model and chose the HD55 since it was at a sale price, advertised to pull 113 ppd and 5 yr warranty. I am sooooo disapointed in its performance as a dehumidifier it is beyond words! The main complaint for me (and many others from the reviews) is that the evaporator coils ice up constantly and it goes into auto defrost more than it dehumidifies. Once this happens it doesn't pull moisture, although Aloair claims this is normal and part of the operation. This is partly true, but when it ices up so much that you cannot pull out the filter to access the evaporator coil, I got to believe this is NOT supposed to happen to this extreme. After running for a week, the best the HD55 "Commercial" unit can maintain is 54% humidity!!!!! So I am either going to return it and go back to a no name 70ppd Wal-Mart unit or keep it and buy a smaller dehumidifier to work in tandem since this Commercial rated Chinese model doesn't perform near what it is rated for. Oh, for the good old days of made in USA products, you could buy with confidence! My suggestion is to just buy the cheap "non commercial" Dehumidifier since they are all made in China too! Too bad, really wanted to love this unit and have years of trouble free performance. Hope this review helps others to make a decision. Should Adorair contact me to replace this unit and make this customer happy, I will consider updating my review to reflect any change in experience, but from reading other reviews Adorair lacks in Customer service, so I doubt that will happen. UPDATE - Aloair offered me a refund and would provide me a prepaid shipping label and offered an apology. They also offered to send me a new Controller Board and Humidstat if I was willing to open the unit and install the parts myself (Aloair sent NO installation instructions). I am handy mechanically so I opted to give this a try. Don't try this yourself if you are not mechanically inclined as there is a VERY large Capacitor just above the Controller Board and it holds a high energy charge to kick start the Compressor and can cause a nasty shock if you are not careful!! After installing the parts, the unit does not grow ice over the filter and coils as it did when I originally got it. The performance did not change and does not get the humidity below 54%. It does not perform any better IMO than a non commercial 70ppd department store Dehumidifier. I added another star on my rating because my experience with Aloair customer service was above average and they responded quickly to my messages. Not sure if the Compressor is made by GREER or not, but be aware Greer makes many components for Chinese made Dehumidifiers and they are in the process of a lawsuit for faulty units that overheat, catch fire and have killed several people. Don't take my word on it and do an Internet search and educate yourself on the lawsuit. Also be aware the HD55 ( Powder Blue colored unit) is NOT Energy Star certified and will use more electricity in operation. The HD55s (White colored unit) IS Energy Star certified and will be kinder on your pocketbook! Although they are very expensive, the Aprilair units are made in the USA and I suspect may be better performing units, not sure if they use Chinese parts in the construction or not, so do a little research before buying ANY Dehumidifier! Hope this review helps others as the Dehumidifier market is rabid with false performance and elaborate marketing claims aimed to confuse potential buyers. The manufacturers like to use the Dept of Energy 2015 specs (No longer valid) and like to advertise the saturation specs for 95% humidity (Higher ppd per day numbers) instead of the current AHAM rating at 65% humidity (Average humidity in USA) which is more accurate and "curiously" is half the ppd numbers of 95% saturation. This done to confuse buyers but is NOT considered false advertising!! Buyer beware! UPDATE: The Alorair dehumidifier has been running 24-7 since my purchase and still occasionally forms a sheet of Ice blocking the radiator and has to be shut down for a few hours to clear the ice. But, I must say it is still working after all this time AND running 24-7, so as far as longevity goes it is still doing its job........most of the time. I am upgrading to 4 stars to be fair and Alorair did reach out me and sent a replacement controller (Didn't fix issue) and offered a refund of the unit during the course of ownership.
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Reviewed in the United States on December 20, 2023 by Skipper Dave
Color: Blue
Revised: It's now October 4, 2024. The Alorair Sentinel HD55 (Blue) that I purchased in September 2022 bit the dust. It's been in my basement doing a good job of dehumidifying until I went down this week and saw ice so thick on the coils that I couldn't remove the filter (which I change every 4 months). I unplugged and defrosted it and then started it back up again. Same story...it iced up. I contacted Alorair Support and provided them with photos, and I did the diagnostics they requested. Their response: My team has reviewed your claim and suspects the issue may be related to the refrigeration. Based on the purchase date of the machine, we can offer the following options: 1. You can ship the machine back to us for free inspections and repairs. If the machine is deemed beyond repair, we will replace it at no cost. Since the machine is beyond the first year, you will need to cover the shipping costs to and from our facility. 2. As an alternative, you have the option to purchase a replacement unit for $(350). This will not require you to return the existing machine, but the warranty will carry over from the original unit. My choice is to pay for shipping, which will be expensive given the weight of the unit or pay $350 for a likely refurbished unit. Honestly, not thrilled with either option since this unit should have lasted longer than 25 months. I don't think I can recommend this dehumidifier given the expense and lack of longevity. ***Original review*** I purchased the Alorair Sentinel HD55 (Blue) in September 2022 because I wanted a dehumidifier that would last longer than the Frigidaire FFAD5033W1 that died with less than 2 years of service. My basement humidity was in the 60% - 70% range and I had mold growing everywhere. The Frigidaire unit worked fine for a while until it just didn't. It showed an error code and it would run, but no water would discharge from the unit. It was dead! Glad I bought the extended warranty from Asurion. To be fair, the Frigidaire only has a one-year warranty and it isn't realistic to expect much more than that from a non-commercial unit like that. The Alorair Sentinel HD55 works very well. My basement is about 34' x 23' or roughly 782 sq ft. The humidity is now 45% down there. I like the HD55 because it works! The desired humidity can be dialed in using the digital adjustment and it takes care of the rest. I also like that it came with a suitable length of drainage hose so I can send the condensate into my sump pump. I added a hose clamp to the drainage hose so it won't come loose. What I'm not so crazy about. It's a bit on the noisy side and the replacement air filters are expensive, IMHO. Four filters for $70 seems like a lot to me. The HD55 runs pretty much constantly and I can hear it all the time as a low background sound. I don't have a decibel meter, but it's a significant noise source when I'm working in the basement. I don't have it connected to any ducts, which probably would help to reduce some of the noise. Overall, I'm happy with how well the HD55 is performing and would recommend the product despite the noise and filter issues. I do recommend the extended warranty. The Asurion warranty returned the cost of the unrepairable Frigidaire unit to me, in the form of an Amazon credit, less the cost of the warranty itself. I applied that credit to the HD55, which I hope will last much longer.
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Reviewed in the United States on November 12, 2022 by Scubanut
Color: Blue
Works great in my basement! It does an excellent job removing moisture and keeping the humidity under control. Easy to set up, runs well, and the drain hose is very convenient. Definitely recommend!
Reviewed in the United States on September 30, 2026 by Jennifer Morrison
Color: Blue
I bought this unit after my basement flooded during some summer storms. The unit is sturdy, and feels very industrial in quality. After flood cutting my walls, I turned this on, and within days, everything was bone dry. The setup and control were easy, and the unit is compact and easy to store. I hope I don't need to use it again, but I feel more comfortable having it on my shelf.
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Reviewed in the United States on August 25, 2026 by Andy Kopplin
Color: Blue
I have updated my review to 5 stars after working with Alorair’s customers service and getting my unit replaced under warranty. My original 1 star review was as follows: After going through lower cost dehumidifiers every one to two years, I decided to spend more and get the Alorair Sentinal HD55 which seemed like a more robust unit. The unit seems very well built. Now after two summers of use, the refrigeration system has a leak, and it is icing up and not working anymore. The company has been very responsive and offered to repair it for free, with me paying the shipping there and back (roughly $135 x 2 = $270), or get a different unit, probably a repaired one, for $350. Two years ago, I bought it for $467 which figures out to $233.50/year. Instead, I bought a small Media for $211. It has been working great, is extremely quiet, and uses approximately half the electricity of the HD55. It is astounding to me that nobody seems to be able to make a dehumidifier that will last more than 1-3 years.
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Reviewed in the United States on July 30, 2026 by JustJay