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

4.8 Average

Model : Sentinel HD90
  • +1More
$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

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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 39 responses

39 Ratings
4.8 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Total: 39 Reviews
High efficiency and low energy consumption
By 'Mikey Kim', Reviewed on 2020-05-29 19:11:39
My basement is very damp due to moisture. Coupled with the clogging of the drainage pipe in the basement, I had to spend a considerable amount of money to buy a dehumidifier to solve it. Thankfully, this AlorAir® Sentinel HD90 dehumidifier did not disappoint me. I can easily operate it, it effectively reduces the humidity to below 50%, and is conducive to purifying the air.
Suitable for our basement
By 'Leja Ellwood', Reviewed on 2020-05-22 15:16:48
This dehumidifier is very suitable for our basement. For reference, my basement is about 2300 square feet. We usually put some important things there, so keeping the air dry is helpful to protect the items from mold and moisture. If you Also want a comfortable basement, then I recommend you to buy it.
Designed for low temperature operation
By 'Abu Kelley', Reviewed on 2020-05-16 09:45:55
I have been using this product all the time, and I can safely say that AlorAir® Sentinel HD90 is one of the best choices for the crawling space dehumidifier. It can maintain normal operation at low temperatures, has a defrosting system, and operates quietly.
By 'Vivien Morin', Reviewed on 2020-05-08 09:20:26
This AlorAir® Sentinel HD90 90 pint dehumidifier is great! I replaced my old dehumidifier. I have used it for about 2 weeks. It runs quieter and extracts a lot of water from the air. The poorly considered thing is that I did not purchase a remote control and replaceable filters, but this is not a problem at the moment, and it does not affect the normal operation of the dehumidifier.
Excellent product
By 'Khalil Strickland', Reviewed on 2020-05-05 09:23:21
This Alorair 90 pint dehumidifier can sense changes in humidity levels. We have a double storey house, we put it in the wettest place downstairs and use the remote control to adjust the dehumidifier settings. It also has some other powerful features, in short, worth every penny.
I hope it can be better
By 'Lillian Hale', Reviewed on 2020-04-30 09:25:29
We are not satisfied with this dehumidifier! It has many modern functions, such as detecting humidity changes, air filtration, remote control, etc. Its drainage method is gravity drainage, but for some reason, I hope it can drain through the condensate pump.
Powerful performance and diverse functions
By 'Lizzie Irving', Reviewed on 2020-04-28 09:54:12
This dehumidifier works very well, it removes a lot of water from the air. In addition, other aspects are also very good, small size, easy to install, an optional air duct can be used for focus dehumidification.
The first dehumidifier, very good
By 'Serenity Holden', Reviewed on 2020-04-25 15:12:41
I changed a big house, but the basement is relatively wet, so I bought a dehumidifier to solve the humidity problem. AlorAir® Sentinel HD90 is my first dehumidifier and I am very satisfied with it. I was surprised that the water tank was almost full on the first day, and I inserted a hose to drain the water. And it runs very quietly.
long-term use
By 'Louie Ward', Reviewed on 2020-04-21 08:36:43
This AlorAir® Sentinel HD90 dehumidifier is impressive. After 2 years of use, this machine still looks good. Despite the 5-year warranty, I think it can be used for a long time. It can be easily disassembled within one minute for easy maintenance and repair.
So far so good
By 'Kajetan Puckett', Reviewed on 2020-04-17 08:57:28
This is the Sentinel HD90 model. This unit has been in service for a week. Since the device has reached the humidity level I chose, it can only be operated intermittently to maintain a low humidity. If there are any problems with the dehumidifier, I will update this review (although I do n’t want to do so), but so far, I really like this product.


Questions & Answers
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.
Answered by Alorair
Yes. Length: 30 centimeters; Inside Diameter: 10 millimeters; Outer diameter: 16 millimeters.
Where is filter located & How to change it?

Bentley on 2019-09-05 13:43:47

1 Answer

Answered by Alorair
The filter is on the side with the "ALORAIR" logo sticker. Just pull it out and replace it. Easy to remove and insert.
Answered by Alorair

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5 Years Warranty

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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

(Monday-Friday: 08:00AM - 5:00PM) PDT

Email: sales@alorair.com

Web: www.alorair.com

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