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

Model : Sentinel HD90

4.9 Average

$985.00 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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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.

Key features

  • Supper COP Energy Star Listed 2.69L/Kwh.
  • Continuous gravity Pipe Drainage.
  • Coated Coils with Stainless Side Plate.
  • Automatic Defrosting System.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options for divided spaces
  • Small – compact and portable.
  • Quick access to the mainboard.
  • 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 the 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 of usability application. The sentinel HD90 is built small – compact and portable with heavy-duty straps for ease of 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.

All-purpose use

Capacity. - The sentinel HD90 is able to remove at least:

  • 90 pints of water per day at 115V(80ºF-60%).

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

Performance. - The sentinel HD90 is built to provide you with superior results 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 settings 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.
  • 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.
  • 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
Current 5.51A
COP 2.69L/K
Size For Up to 2,600 sq.ft.
Filter Pre Filter (Optional MERV-8 Filter)
Air flow 210 CFM,350 CMH
Sound Pressure Level <58DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Gravity Draining
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33~105℉
Functioning Humidity Range 35~90%
Capacity115V(80ºF-60%) 90Pints
Weight 78.0Ibs
Dim(LxWxH) 23.2x15.2x17.7in
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

98% Recommend this product of 64 responses

64 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
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3 Stars
NAN % Complete
2 Stars
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1 Stars
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Total: 64 Reviews
Every penny is worth it.
By 'Hira Pratt ', Reviewed on 2020-11-23 13:44:32
Before getting the product, I first read all the reviews. The installation is very easy, within 10 hours, it absorbs a lot of moisture from the air. Now, whenever the humidity exceeds 45, my dehumidifier turns on and sucks water from the air. This is a great product. I like it so much.
A quiet and efficient unit
By 'Mahdi Butler ', Reviewed on 2020-11-16 10:27:23
I bought this equipment to replace a malfunctioning dehumidifier in a 2,300 square foot basement, and will never be happy again. At first, I was worried because the device did not have a pump, but the hose was easily connected and the device started to work. The hose is sufficient to drain the water, use a bucket to collect the water. It has been working for about two weeks, which is great! ! I can feel the changes in the air, and make me realize that this unit is much better than any unit I have tried.
Great product and company!
By 'Marina Leal ', Reviewed on 2020-11-09 10:57:39
I bought this product and worked exactly as described-very effectively reducing the humidity of the air in the basement of our children's finished product. A hose attachment was used to drain and it worked well. After a period of use, the machine malfunctioned. I emailed it to customer service and they are happy to deal with customers. Quick, professional, friendly, and helpful. Amazing customer service. I cannot give enough evaluation of this company. Of course, I will buy from them again and highly recommend any items you consider buying.
Excellent dehumidifier in the basement
By 'Carmen Mcpherson ', Reviewed on 2020-11-02 10:23:40
I have done a lot of research on this and it has been running for about 2 weeks now. I am very happy. It can be turned on and off as needed. It runs very quietly. I like the continuous drain hose function. In general, I am very satisfied with this dehumidifier. It looks good, saves space, and can be moved well, and the controls are intuitive. I like the humidity display.
good results
By 'Zoha Kim ', Reviewed on 2020-10-26 10:44:46
I purchased this product to replace the equipment with a drainage failure. The device drains directly into the main air conditioning drain through gravity drainage. It can reduce the humidity in the area where I store books. The average humidity drops from 60-70% to 40%. Love this unit.
It does what it should do
By 'Alberto Clarkson ', Reviewed on 2020-10-19 10:11:44
This machine does a good job of keeping the humidity in the basement exactly where we want it. I would recommend it. My machine has been running for several weeks and it is running well. Since using it, we have noticed real differences in our homes. The air is relatively fresh.
Good dehumidifier!
By 'Inayah Forster ', Reviewed on 2020-10-12 09:02:10
The quality of the dehumidifier is quite good. The shell is made of sturdy material and looks durable enough. Although it does have a certain weight, it is still light enough that any strong person can pick it up. Easy to use. All you have to do is put it in the room, plug it in, turn it on, and adjust the settings to your liking. By connecting the drain hose, the machine will drain automatically, so you don't need to pay special attention.
Great equipment
By 'Neve Raymond ', Reviewed on 2020-10-05 09:05:20
I have been using it for a week and it is very useful. The dehumidifier has a beautiful design and convenient access control. I really like to drain the collected water into the drain trough through the gravity drain pipe. With this machine, the air in the house will become fresh and comfortable. Recommended!
Really good product
By 'Elora Patel ', Reviewed on 2020-09-28 08:53:39
The dehumidifier does an excellent job of reducing the humidity in the basement. So far (within 1 month), we have not had any problems. I can't prove how much electricity bills will increase, but it is worth preventing all moisture. You can hear it running, but nothing is intolerable or annoying. We are satisfied!
High-quality product, easy to dehumidify
By 'Kalum Abbott ', Reviewed on 2020-09-21 13:17:57
Living on the Gulf Coast-a very humid environment. It always keeps the basement of my 1600 square foot house at 50-55% humidity. Surprised how much water is pumped out of the air. Easy to set up, the hose is easy to empty the tank. Essential equipment for humid weather.


Questions & Answers
Answered by Alorair
Up to 2,600 square feet.
Which refrigerant does this dehumidifier use?

Barney on 2020-11-17 10:17:17

1 Answer

Answered by Alorair

1 Answer

Answered by Alorair
Remove 198PPD at Saturation condition and 90 PPD at AHAM.
Does this dehumidifier use refrigerant?

Roza on 2020-11-03 13:07:24

1 Answer

Answered by Alorair
What is the COP of the dehumidifier?

Zeenat on 2020-10-27 15:51:57

1 Answer

Answered by Alorair
2.69 L/kWh.
What is the working humidity of this equipment?

Manisha on 2020-10-20 10:26:33

1 Answer

Answered by Alorair
Does it come with a power cord???

Dione on 2020-10-13 16:42:53

1 Answer

Answered by Alorair
Sentinel HD90 comes with a power cord. thank you very much!
What is the CFM of the dehumidifier?

Skylar on 2020-10-06 13:57:02

1 Answer

Answered by Alorair

1 Answer

Answered by Alorair
The device has passed CE, ETL certification.
What is the rated power of this dehumidifier?

Roberto on 2020-09-15 16:39:52

1 Answer

Answered by Alorair
115V/60 Hz.