Order Tracking | (888) 990 - 7469 | Sign in/Sign up

AlorAir® Sentinel HD90 Basement &Crawl Space Dehumidifier, Capacity: 90PPD (AHAM) 198PPD(Saturation)

4.9 Average

Model : Sentinel HD90
$1,004.00 List Price: $1,250.00

Sentinel HD90 dehumidifier is designed specifically for crawlspaces and basements. Low noise level, great COP,2.88/kwh, and huge capacity 90PPD at AHAM condition.
Draining Mode: Gravity Draining

Buy on Amazon AlorAir.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Additionally, AlorAir.com participates in various other affiliate programs, and we sometimes get a commission through purchases made through our links.

Product Information

Key features:

  • Supper COP Energy Star Listed 2.88L/Kwh.
  • Continuous gravity Pipe Drainage.
  • Coated Coils with Stainless Side Plate.
  • Hot Gas Valve Defrosting System.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options for divided spaces
  • Small – compact and portable.
  • Quick access to the main board.
  • Quiet operation.
  • Engineered for low-temperature operation.
  • Laundry mode.


The sentinel HD90 is a high capacity dehumidifier. It is ideal for tight spaces dehumidification. These spaces may include:

  • Crawlspaces,
  • Attics.
  • basements.

This unit is design and built to stimulate air circulation while operational, this is the main reason the sentinel HD90 is able to produce superior results in this space.

The sentinel HD90, however, offer you a wide range usability application. The sentinel HD90 is built small – compact and portable with heavy-duty straps for ease movement. Since this unit can cover a wide space that extends up to 2,600 square feet, it can, therefore, be deployed in:

  • households.
  • Shops.
  • Storage areas.
  • Garages.
  • Restoration work.
  • Industrial institutions.
  • Laboratories.
  • Offices.
  • Restaurants or bars.
  • Museums or sports halls.

Generally, in any space that requires humidity levels to be regulated.


Humidity is the cause of dampness, stuffiness or odor in the basement or crawlspace. Failure to control the humidity levels with not only cause structural damage like wood rot or wood warping, but will also create the perfect environment for allergens like mold, and mildew to grow.

Most homeowners tend to ignore the humidity levels in the crawlspace or basements, however, research from the American Lung Association has proven that moisture, odor, and allergens in these spaces can easily spread out to the entire house.

all-purpose use:

  1. Capacity. - The sentinel HD90 is able to remove at least:
  • 90 pints of water per day at 115V(80ºF-60%).
  • 90 liters of water per day at 220V(30º-80%).

This is very impressive comparing the sentinel HD90 is the same size as the Sentinel HD55.

  1. Performance. - The sentinel HD90 is built to provide you with superior result fast. It combines the following features:
    • Air filtration - The sentinel HD90 is equipped with easy to clean filters that are used to trap any mold spores and other Impurities in the air.
    • Auto humidistat - The sentinel HD90 is equipped with an advanced humidity sensor that is able to notice changes in humidity levels in the bypass air design reducing short cycling and saving energy.
    • Quick internal access - The sentinel HD90 can be easily disassembled in under a minute, for easy service and maintenance.
    • Remote control - The sentinel HD90 will allow you to remotely adjust the dehumidifier setting remotely without having to do it manually on the unit. This makes it easy to control humidity in a tight space. (Sell separately
    • Plug and play – At Alorair we have built and designed the sentinel HD90 to be an easy plug and play appliance you don’t need to have any technical knowledge to operate this unit. All available installation modes are easy and don’t require a technician.
    • Duct options - The sentinel HD90 allows you to provide focus dehumidification or dehumidification in different space without moving the dehumidifier.


  1. Warranty – The sentinel HD90 has an extended 5 years warranty.

At our state-of-the-art production facility, our engineer's design and carefully built the Sentinel HD90 to perfection. Every unit is thoroughly tested and proven to 100% effective at lowering humidity levels.

  1. Support – At Alorair we have a dedicated support team, that is available 24/7 to our customers via email, phone or live chat. We are dedicated to ensuring that all our customers using any of our product like the sentinel HD90 get instant support when they encounter any challenges.

Make increased indoor humidity a problem of the past! Invest in the sentinel HD90 today!

Power 115V/60HZ,220V50HZ
Current 5.5A(115v/60Hz)
COP 2.88L/Kwh(115v/60Hz)
Size For Up to 2,600 sq.ft.
Filter Clean Air Filter,HEPA,Merve-8
Air flow 210 CFM,350 CMH
Sound Pressure Level <58DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Gravity Draining
Defrosting Control System HGV Defrosting
Functioning Temperature Range 33~105℉
Functioning Humidity Range 35~95%
Capacity115V(80ºF-60%) 90Pints
Weight 78.0Ibs
Dim(LxWxH) 23.2x15.2x17.7in(590x388x450mm)
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

97% Recommend this product of 49 responses

49 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: 49 Reviews
I am satisfied with this dehumidifier...
By 'Malak Michael ', Reviewed on 2020-08-11 09:08:12
First of all, I want to say that I am very picky about dehumidifiers. My last one lasted for 3 years. The product I bought is amazing. It runs quietly, without annoying noise. And it is light and easy to move. We put it in the center of the house because our house accumulates a lot of moisture due to daily life, we have been afraid to go out for several months due to the virus. It is very easy to use and I highly recommend it.
Did a great job drying the basement
By 'Tyler Justice ', Reviewed on 2020-08-03 14:47:21
We bought this because there are no ventilation holes in the basement. Our humidity is within 70%! I found that this device stimulates air circulation when it is running, so it produces an excellent effect in the basement. Now our basement feels and smells much better. I will recommend this excellent dehumidifier to everyone who wants to dry their room!
good results
By 'Kitty Cole ', Reviewed on 2020-07-27 13:51:29
Our house is moldy. I bought a hygrometer and found that the air is very humid! Especially after someone takes a shower. So I bought this dehumidification device for the house, the plug-and-play operation is very simple, I did not buy additional accessories, for me, it is not needed now. It is placed in the corridor of the living room, we run it all day, and now the humidity is detected at about 40%, I hope it can be maintained.
Great manufacturer of dehumidifiers
By 'Raja Emerson ', Reviewed on 2020-07-21 08:45:52
Somehow some moisture penetrated into the closet of the room and formed mold on the clothes. I realized that the overall humidity of my house is high, so I bought an AlorAir Sentinel HD90 dehumidifier to remove too much moisture from the room. This is a small size, very suitable for small spaces with high humidity. After using it for a week, I have completely relied on it. Now I run it in the basement, draining water by connecting a hose, and it feels great.
Overall feel good
By 'Braiden Hartman ', Reviewed on 2020-07-13 13:33:29
The Sentinel HD90 90 pints has an excellent capacity, much quieter than my previous model, and the overall design is superior. The device looks very sturdy and could have been given 5 stars, but I don’t know how long it will last. If necessary, it will definitely be purchased in the future.
Exceed expectations
By 'Bree Beltran ', Reviewed on 2020-07-06 15:18:26
My old dehumidifier has only been used for 2 years and now it is not working. Fortunately, we now have a better unit. Sentinel HD90 not only effectively reduces the humidity level but also filters harmful substances in the air. This is a feature that our old model does not have.
Small size and high capacity
By 'Margo Wilkinson ', Reviewed on 2020-06-29 16:51:45
I purchased this Alorair® 90 pint dehumidifier a month ago. I thought it had a large size. In fact, it was a small unit. I couldn't imagine such a large capacity dehumidifier being so compact. It reduced the humidity in my basement from 80% to 45%. There is no problem at present, I hope it can be maintained.
Highly recommend this model
By 'Ross Houghton ', Reviewed on 2020-06-22 19:09:40
Sentinel HD90 is a large-capacity dehumidifier. It is small and easy to carry. I usually need to dehumidify in different corners of the house. Although it is easy to move, I still bought two models of the same capacity.
Please give me some advice
By 'Britney Fountain ', Reviewed on 2020-06-13 08:13:41
After getting the AlorAir® Sentinel HD90, I installed it in my basement loft. We live on the second floor, so I can't hear the sound of it running. I have to go downstairs often to check if it is working properly. This model is equipped with a remote control system, maybe I should buy a remote control, what do you think?
Quiet and convenient operation
By 'Jacques Cope ', Reviewed on 2020-06-06 13:30:45
As most reviews have said, it has a quiet operation and effectively controls humidity levels within a range of 2,600 square feet. This dehumidifier can be installed in any space that requires dehumidification, and it can be used without technical knowledge.


Questions & Answers

1 Answer

Answered by Alorair
How heavy is the device? Is it easy to move?

Habiba on 2020-08-05 09:58:56

1 Answer

Answered by Alorair
Weighing 78.0 pounds, the machine is equipped with heavy-duty belts for easy movement.
Answered by Alorair
Of course, it can. It can be used anywhere in your home where there is moisture.
Answered by Alorair
Not possible. The drainage must have gravity to work.
What is the size of the dehumidifier?

Enrico on 2020-07-16 14:37:08

1 Answer

Answered by Alorair
It is 23.2 inches long, 15.2 inches wide, and 17.7 inches high.
Answered by Alorair
No, the remote control needs to be purchased separately.
Answered by Alorair
Please kindly find our hose size for Sentinel HD90: Inside Diameter: 10 millimeters; Outer diameter: 16 millimeters.
Does this dehumidifier have a pump?

Philippa on 2019-10-31 10:20:55

1 Answer

Answered by Alorair
Does it have an automatic defrost?

Katelyn on 2019-10-25 11:26:05

1 Answer

Answered by Alorair
Yes. Automatic defrost.

1 Answer

Answered by Alorair
No. Sentinel HDi90 has a pump.