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AlorAir® Sentinel HD55 Basement & Crawl Space Dehumidifier, Capacity: 55 PPD (AHAM), 120 PPD (Saturation)

4.9 Average

Model : Sentinel HD55
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$877.00 List Price: $1,200.00

Moisture Removal Capacity (115V/60Hz): 55 Pints/Day@AHAM (80°F-60%)
120 Pints/Day@saturation (90°F,90%)
Draining Mode: Gravity Draining

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Product Information

Key features:

  • Compact and Smallest Size.
  • HVAC Remote System.
  • Hot Gas Valve Defrosting System.
  • Ducting options for focus dehumidification.
  • Compatible with Remote Control.  (Notice: sold separately)
  • Coated coils with the stainless side plate.
  • Engineered for low-temperature operation and the air flow issues like the crawl space or attic.
  • Multiple quality certifications.


The Sentinel HD55 is built small compact and portable ideal for tight space dehumidification. With the patent for invention protected. This unit has CE, ETL certification.

The Sentinel HD55 has a wide range of applications including :

  • Crawlspaces.
  • Basements.
  • Storage areas.
  • Offices.
  • Warehouses.
  • Factories.
  • Bars.
  • Restaurants.
  • Museums.
  • Laboratories.
  • Laundry.


moisture remains the greatest threat to your home’s structural integrity. Increased humidity levels indoors can cause the growth of mold and mildew and an increase in dust mites. These are known allergens that cause respiratory problems and asthma. This is why need to invest in a dehumidifier today.

All-purpose use:

  • Capacity. - The Sentinel HD55 removes at least 55 pints of water per day(AHAM) drawing only 3.6amps. It is also energy efficient able to remove 5 pints per kilowatt consumed. Able to control humidity to a space of up to 1,300 sq. ft.
  • Performance.
  • Warranty – The Sentinel HD55 has an extended 5 years warranty. At Alorair we ensure that all out Sentinel HD55 units are built to meet the highest levels of quality and durability. Every unit is thoroughly tested and proven to be 100% functional before leaving the warehouse.
  • Support - All our customers enjoy 24/7 support, thanks to your technical support team via phone, email or via live support. This ensures that all our customers receive the help they need whenever they encounter any challenges while operating the Sentinel HD55.
Power 115V/60HZ,220V50HZ
Current(115v/60Hz) 3.6A(115v/60Hz)
COP(115v/60Hz) 2.4L/Kwh(115v/60Hz)
Size For Up to 1,300 sq.ft.
Filter G3
Air flow 130 CFM,230 CMH
Sound Pressure Level <52DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Gravity Draining
Defrosting Control system HGV Defrosting
Functioning perature Range 33~105℉
Capacity115V(80ºF-60%)) 55Pints
Weight 59Ibs
Dim(LxWxH) 19.2X12.2X13.3in(490x310x340mm)
Loading quantity 40”HQ :792Sets

Ratings Summary

98% Recommend this product of 24 responses

24 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Total: 24 Reviews
Exactly right for our needs.
By 'Pickett', Reviewed on 2019-12-26 13:43:05
I have two of Sentinel HD55 Dehumidifier. The first one was purchased a few years ago for one end of the basement. At the time, AlorAir was a small store on Amazon. I found it through my friend's recommendation. This unit is still removing the moisture from that part of the basement, and works well so far. Then I thought why not get one for the other end where I just built my office. Well, that's what I did and the new one is removing the moisture from the rooms in that section.
Everything at a glance!
By 'Keith', Reviewed on 2019-11-18 11:00:13
It's the right size, small enough to fit into the crawl space. It worked very well, and it drained a lot of water. I wish it has a timer function which would allow it to automatically turn it on and off at preset hours. Of course, its continuous drainage work is also very good.
So happy I went for it
By 'Lorenzo', Reviewed on 2019-10-24 09:25:17
So far, so awesome. This Sentinel HD55 has transformed my basement. We no longer have that damped smell in the basement and also we have not had any mold returned. We plan on buying another one for another section of my home.
Highly recommend
By 'Anne-Marie', Reviewed on 2019-10-16 12:02:59
Fits perfectly in a small space in our basement! I especially like the fact that it comes with everything no need to purchase anything! The hose is very long and it could be shortened! I'm pleased.
Not the best but
By 'Shay', Reviewed on 2019-10-05 14:08:34
Now it is set on the lowest humidity setting of 35% which should allow the compressor to cycle occasionally. It is quiet and can't be heard in the main house. Noise isn't an issue at all. It has 5 years warranty, I do not need to buy an extended Year Service Plan on the extended warranty (5 years is enough for that).
Awesome and good looking!!!
By 'Tayyab', Reviewed on 2019-09-25 09:37:50
Great price for a Sentinel HD55 dehu that sucks the humidity right out of the air. We had to shut it off because it felt like the desert after a while. It is simply awesome and well worth it.
Basement Humidity has been stableized
By 'Melanie', Reviewed on 2019-09-16 14:32:45
The Sentinel HD55 dehumidifier came in one day. It's the same capacity as my last one but much smaller looking. They all make some noise, but this one seems quieter than the last. I have it in the basement so noise isn't an issue. Since there are so many to choose from and good and bad reviews about all of them, this seemed like the best choice.
It's the Best Dehumidifier!!!!
By 'Yasmine', Reviewed on 2019-09-05 09:07:40
It was getting Really Humid!!! It works So Well that the Basement now feels Less Humid then the House!!!
First Time AlorAir Dehumidifier Buyer
By 'Issa Goddard', Reviewed on 2019-08-26 09:34:20
We have a damp basement. After reading many reviews on-line about dehumidifiers, I decided to buy the AlorAir 55 pints dehumidifier for our basement based on a large number of positive reviews. It drains well through a connected hose to the sink as it sits up high in the basement. It is not too noisy which I also like. But I have a slight concern about the life expectancy of the unit after reading several reviews about the unit only working for one year. For now, I am very happy with the purchase and I am considering ordering another unit for my downstairs.
Awesome cutomer service
By 'Kie Pace', Reviewed on 2019-08-17 08:58:54
Have used this product for 3 days. It seems to be working very well. Directions and customer service are the cause of the five stars rating. Regina is a dehumidifier professional. I asked many questions and she was very patient to answer them. She is very helpful. I also put insecticide in the bucket that collected the water so that it didn't become a breeding ground for mosquitoes in the dark, damp basement.


Questions & Answers
Does the fan run continuously?

Saima on 2019-11-11 16:14:17

1 Answer

Answered by Alorair
Yes, it needs the continuous operation of the fan to draw air into the dehumidifier
Answered by Alorair
It's better to have a separate circuit.

Mercer on 2019-10-07 10:20:29

1 Answer

Answered by Alorair
It would not reset itself since a power outage would amount to turning the machine off or unplugging it.
Answered by Alorair
Yes. There is a digital control panel on the top of the unit to set the humidity percentage.
Continious drain option?

Samera on 2019-08-30 09:28:46

1 Answer

Answered by Alorair
AlorAir® Sentinel HD55 Dehumidifier is gravity draining. It comes with a 2 meters drain hose.

1 Answer

Answered by Alorair
It pumps out about 55 pints of water a day.

1 Answer

Answered by Alorair
Yes, it is certified with ETL, Energy-Star. Thanks.

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AlorAir Restoration Equipment offers a variety of equipment for all your restoration needs from water damage restoration to drying equipment. Including Commercial dehumidifier, Air Movers and Air Scrubber. AlorAir offers special dehumidifier for the basement and crawl space.

Contact Information

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Tel: (888) 990 - 7469

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Email: sales@alorair.com

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