ALORAIR Commercial Dehumidifier 113 Pint, with drain Hose for Crawl Spaces, Basements, Industry Water Damage Unit, Compact, Portable, Auto Defrost, Memory Starting, Sentinel HD55
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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
Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store 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 Cubic Feet Per Minute
Upper Temperature Rating: 104 Degrees Fahrenheit
Dehumidification Capacity: 53 Pints per Day
Voltage: 115 Volts (AC)
Item Dimensions D x W x H: 19.2"D x 12.2"W x 13.3"H
Item Weight: 41.7 Pounds
Color: Blue
Material: Metal
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
Recommended Uses For Product: Commercial
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jul 31
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
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 Reviewed in the United States on April 8, 2024 by Erik in Texas
Color: Blue
These are great units with a company that stands behind their product. I have purchased two of these units and they have worked very well in my two older houses. After almost one year in service, one of the units stopped working. I reached out to Alorair Customer Support and Stela guided me efficiently through the process to work with the engineers to help me isolate the issue. They sent me a new part with clear instructions for replacing it and it worked perfectly. Stela's responsiveness to my emails and questions demonstrated a commitment to their products. Everyone knows that sometimes things fail, however great companies help their customers and deliver on service and Alorair is one of those companies. I would recommend these units to others.
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Reviewed in the United States on March 24, 2026 by Julie Suckow
Color: Blue
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.
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Reviewed in the United States on May 21, 2021 by Ronald
Color: Blue
I purchased this unit about 2.5 years ago and installed it in my crawl space. It was easy to install and is a heavy duty piece of equipment. It started up and has maintained our crawl space humidity well since that time. About a month ago, however, the unit stopped working. It made a buzzing noise and would not start up. I contacted Alorair service. They responded quickly and asked me to send a couple of pictures and a short video, so they could diagnose the problem. The unit was still under warranty and they concluded the problem was with the motherboard. They offered to send me a motherboard to replace myself or send the unit in for repair. I opted to replace the board myself with the help of a video they sent. I received the board in a few days and have repaired the unit successfully. While I'm not happy the unit failed, their customer service and responsiveness was top notch. They honored their 3 year warranty, responded quickly to my problem, and offered straightforward repair options. Great support!
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Reviewed in the United States on November 12, 2025 by Terri Culy
Color: Blue
I bought this dehumidifier after getting flooded during hurricane Helene. It worked non stop for over a year while I was rebuilding the house. Then one day I got error E5. I called customer service, got someone on the phone right away (!) and just had to email my amazon invoice and a description of the problem. They made me run a test, diagnosed the problem, and sent me a new coil temp sensor. No questions asked, no hassle, no cost. Within less than a week the unit was running again. This is as good a customer service and warranty service as I have ever received.
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Reviewed in the United States on February 2, 2026 by Omer Dhoore
Color: Blue
Update: This was a powerful dehumidifier for my small rv for 3 summers, then it got less powerful. It used to easily take the humidity to under 40% but was now struggling to hold 50%, and not cycling. It was on all the time. As stated in my original review, customer service sent me a new sensor and main board. Looked good at first, but ultimately didn't help. In the 2-1/2 months it took for this (not their fault - I was busy) the unit degraded significantly more and now can barely hold 60%. It was not an electronics problem. There used to be a tiny stream of water coming out of it when new and now it's a drop every 3 seconds. My conclusion (and theirs also) was a loss of refrigerant. A leak. Very likely leaking since it was originally charged. It has been well handled, kept level at all times during deployment, handling, and storage, left for 24 hours before turning on after moving, and doesn't have a scratch on it. As others have noted, they said I could ship it to them and they would repair it free, but I have to pay shipping both ways. At 44 pounds this is quite an expense at consumer rates. Otherwise, I could buy a new one from them for $450. No way. The replacement will leak after 3 seasons and I don't want to pay $150/summer for dehumidifying my rv when it's parked (I use a small heater the other 3 seasons). I feel sorry for the company as they really tried in good faith to help me fix it, but the product is no good. It leaks. Any sealed heat transfer system that leaks so soon without being abused is junk. I have a 40 year old refrigerator which has been handled roughly (in the shop) that still runs perfectly and has been running every day of those 40 years. The one in my home is 25 years old, still running perfectly. Buy at your own peril. I'm going to replace it with a cheap Walmart unit, and perhaps someday I'll address the plumbing on this thing in the future. I may be able to bring it back to life and have it recharged (if the charge ports are compatible). My advice - either get a cheapo unit and plan on replacement, or spend a couple hundred more for a known quality unit, preferably one not made in China. Original review: I use this to keep the moisture down in my rv. I live in the pacific northwest and during the non winter seasons it can get humid. It rains a lot here. Before I deployed this unit my rv would get moldy inside in a matter of a few weeks. One time I found an inch of white mold on my steering wheel. Yuk! After spending a lot of effort (and a lot of white vinegar) getting rid of the mold I bought this and there has been no problem since. It's much better than a house unit because it can discharge water out a hose to the outside. Compared to what this is made for, my application is light duty. After 3 years the humidity no longer matched my humidity gauge. It was off by 15%. Customer service helped me trouble shoot the problem, which turned out to be the humidity sensor. They sent me a new one free, but it turned out to be incompatible as it was a newer design and it gave an error code of E1. When I reported that, they scrounged an old design sensor and sent me that, as well as a new main board to match the new sensor. Free. Although the manual doesn't contain the error codes or much in the way of trouble shooting, they have quite a library of utube videos for reference. Combine those with TOP NOTCH customer service and I would not hesitate to buy this unit again. Replacing modules and filters is very easy requiring only a screwdriver and needle nose pliers. I highly recommend.
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Reviewed in the United States on August 30, 2024 by M. Schimmelman
Color: Blue
This unit is extremely effective at removing humidity. It has no problem keeping the humidity in my basement to the desired 45% humidity. Alorair dehumidifier are known for being effective - this is not remarkable. What is remarkable is Alorair's warranty process. I purchase this unit in September of 2022. In June of this year, I notive that the unit was running continuously but the drain hose was totally dry, and the humidity in my basement was significantly higher than the setpoint. At the time when I purchase this unit, it came with a 5 year warranty. I called Alorair customer service, to initiate a warranty claim. I might have called prior to their business hours (they are in Pacific time zone, I am EDT), as no one answered. I was surprise when later that day, a customer service rep called me back. From the initial phone call to the final resolution Alorair stood behind their warranty. For a very reasonable $75 shipping fee (the unit is coming from California and weighs ~ 45 lbs), Alorair sent me a brand new unit. In fact the unit they sent is an upgraded version, as this unit was currently out of stock. Finally, the representative that handled my claim (Jackie) was courteous and very helpful from the initial call back. She made the whole process painless. Thank you Alorair.
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Reviewed in the United States on August 6, 2025 by Jack Landis
Color: Blue
Robust product with an outstanding warranty and excellent customer service. I purchased this in 2023 and it has reliably run since then. I took it out recently (late 2025) for a routine cleaning (which they recommend). As an engineer, I was impressed with its condition 2 years in...no rust, components designed and assembled in a which facilitates easy cleanup and maintenance work. I reassembled everything and when I restarted I could tell something was not right with the unit. I called customer support and was surprised to get an actual person after just a couple rings... She was very helpful and asked me to send a short video of what the machine was doing , which I did. She sent it to their engineering team which assessed that I had a fault in the motherboard. They asked for a receipt (copy of my original Amazon order) and said that they would send me a new motherboard and include a link to YouTube video showing how to replace the board... Aloraire interactions always got swift responses (within 24 hrs) from very friendly folks. When my motherboard arrived , I watched the video and had no problem unplugging a dozen or so quick connectors and reinstalled the motherboard in less than 10 minutes with no special tools. The engineering team had correctly diagnosed the problem and my unit is back in service. I was pleasantly surprised by the outstanding customer service and robust product design!
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Reviewed in the United States on December 2, 2025 by Paul M