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

4.9 Average

Model : Sentinel HD55
$788.00 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

97% Recommend this product of 53 responses

53 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: 53 Reviews
Good dehumidifier
By 'Nour Naylor ', Reviewed on 2020-08-11 08:51:53
Sentinel HD55 works well, covers a large area, and is very quiet during operation. It is smaller than I expected, but this is a good thing because it is not noticeable. It also has a remote control that can remotely control the switch and other settings of the dehumidifier. Although it needs to be purchased separately, I am very satisfied with it.
The dehumidifier that works so far!
By 'Gerald Oneill ', Reviewed on 2020-08-03 14:26:50
After reading a lot of online reviews, we finally decided to buy this Sentinel HD55 unit for our basement. Due to the global pandemic of the virus, it arrived at my home later than I expected. Fortunately, the box is intact. On the first day of use, the humidity dropped by about 15%. I didn't have a humidity measuring instrument, just by my feelings, because my breathing was indeed much easier. Overall, I am satisfied with it and if it fails, I will replace it. But now it works fine, which is great.
I don’t know if I need it so much, but I’m so happy to get it!
By 'Wiktor Cardenas ', Reviewed on 2020-07-27 13:26:21
We bought it in June of this year because we noticed mold in the basement. Our basement is not big, this 55-pint dehumidifier is just right. I noticed that it runs quietly and the smell of the area where it is used has improved. We did not run it in continuous cycles because the outdoor weather is very warm.
A good tool for basement dehumidification
By 'Macauley John ', Reviewed on 2020-07-21 08:12:44
The Sentinel HD55 dehumidifier is worth recommending, and it is definitely worth having one of these devices in your home. It not only runs quietly but also saves more energy compared with similar products. One of my 1,200 square feet basement was damp and moldy, but HD55 helped me dry the entire basement so quickly. If there is a need in the future, I will buy it again.
Should be recommended to family and friends
By 'Hanna Donnelly ', Reviewed on 2020-07-13 13:20:31
We have an empty room that has not been inhabited for a long time. There is no ventilation in the room, so it is very humid. Recently, we have guests coming and need to use the room. We purchased the Sentinel HD55 dehumidifier to make the room dry and comfortable. It is very quiet during operation and it really warms the room. My guest was very satisfied with the residence and decided to purchase this equipment for his house to reduce high humidity.
Trustworthy products
By 'Cinar Stanton ', Reviewed on 2020-07-06 14:40:46
When I first received Sentinel HD55, I did not know how to install it. I have never used the same type of product. Fortunately, through the user manual, I understand the installation process, it is very easy to install and set up. I put the drain pipe into the bucket to check if it works, and I'm happy to have nearly half of the water in the bucket in a day.
Pay for quality products
By 'Israr Camacho ', Reviewed on 2020-06-29 16:13:16
This is the first dehumidifier in the true sense that I have, and this is the most praised humidity control unit. It works and is very quiet! The dehumidifier products I bought before for less than $100 did not work. For consumers, this is deceiving. Don't try to buy cheap and inferior products cheaply, but buy products that can be used.
Ideal for basement
By 'Usman Parker ', Reviewed on 2020-06-22 18:53:16
Due to the arrival of summer, our basement is poorly ventilated, so the air humidity is particularly high. We used to use the same dehumidifier to solve the problem, and this time is no exception. AlorAir® Sentinel HD55 can effectively reduce humidity and remove at least 55 pints of water every day, making it ideal for basement spaces.
Quiet operation
By 'Tyrique Farrington ', Reviewed on 2020-06-13 07:49:39
I am happy to buy the Sentinel HD55 dehumidifier. We used to buy a dehumidifier on Amazon, but that model is inefficient and makes a lot of noise. Sentinel HD55 runs quietly and can dehumidify within 1,300 square feet. For us, this is the best choice.
Don't hesitate to buy with confidence
By 'Kaeden Jefferson ', Reviewed on 2020-06-06 13:20:07
AlorAir® Sentinel HD55 exceeded my expectations! It has passed multiple quality certifications, so I don't have to worry about its durability. It is worth noting that it has an air duct option for dehumidification, and it can be controlled remotely through remote control.


Questions & Answers

1 Answer

Answered by Alorair
Hello, there is a digital control panel on the top side of the device to set the humidity percentage.
What certifications have Sentinel HD55 passed?

Jareth on 2020-08-05 08:24:31

1 Answer

Answered by Alorair
This machine has CE, ETL certification.
Answered by Alorair
Gravity drain. Make sure the drain hose slopes downhill all the way.
Where can I get the user manual?

Helen on 2020-07-22 08:00:51

1 Answer

Answered by Alorair
The user manual is included with the purchase of this machine.
Answered by Alorair
Yes. The coverage of this machine reaches 1300 square feet.

1 Answer

Answered by Alorair
Sentinel HD55 dehumidifier is easy to operate and install, users can install it by themselves without any problems.
Answered by Alorair
It is fitted with stainless side plates and coated coils. Its defrosting system is designed with the hot gas valve. It has the supper COP.
Can HD55 filter multiple times?

Kayla on 2020-04-27 16:03:59

1 Answer

Answered by Alorair
It is recommended to replace the filter at least once a month, please turn off the power and pay attention to ensure that the filter is dry when replacing.
Answered by Alorair
Please kindly find our hose size for Sentinel HD55: Inside Diameter: 14 millimeters; Outer diameter: 18.5 millimeters.
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

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