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

Model : Sentinel HD90

4.9 Average

$999.00 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 2.88L/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 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 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.

All-purpose use

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.

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.
  • 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 5.56A
COP 2.88L/Kwh
Size For Up to 2,600 sq.ft.
Filter Pre Filter (Optional MERV-8 Filter)
Air flow 230 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
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

97% Recommend this product of 55 responses

55 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN % Complete
2 Stars
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1 Stars
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Total: 55 Reviews
Easy to use and very effective
By 'Serenity Wainwright ', Reviewed on 2020-04-01 10:20:56
I didn't like spending money on what turned out to be stupid, so I read reviews and comparisons, and in the end, I bought this Sentinel HD90 dehumidifier and it was great. It works effectively and is easy to use. I empty it about once a week and clean the filter on average once a month. I am very satisfied if you are looking for a good quality dehumidifier and get strong customer support, then I recommend you choose AlorAir.
Satisfactory machine
By 'Jaydn Winter ', Reviewed on 2020-03-25 09:22:50
It is a great dehumidifier to solve the basement damage restoration job. It helps me perfectly. It has great extra functionality that we everyone expects. This one can beat all of the previous dehumidifiers that I owned. I am pleased.
Good dehumidification option
By 'Ebonie Prentice ', Reviewed on 2020-03-19 19:50:07
Surprisingly ... this AlorAir® Sentinel HD90 dehumidifier is very efficient. You wouldn't believe how much moisture there is in the air! This one combines high-tech design with professional-grade performance and portability. I think this is a very good thing to remove a huge amount of moisture. You will also be satisfied with its price. So definitely Recommended!!!
Dehumidifiers are very useful
By 'Raj Wells ', Reviewed on 2020-03-16 09:43:46
This is a great dehumidifier. I only had one before, but it is not as good as this one. Super easy to use, equipped with easy-to-clean filters to catch any mold and other impurities in the air, it was done very efficiently in my basement, the bad smell never came back, we really like this Machines!
Large capacity dehumidifier
By 'Abbigail Buckley ', Reviewed on 2020-03-12 15:06:57
The AlorAir® Sentinel HD90 dehumidifier is easy to operate and is ideal for dehumidifying in confined spaces.
Very good dehumidifier!!!
By 'Efe Potts ', Reviewed on 2020-03-10 16:46:31
since we turned the machine on, it’s already gathered about an inch of water in just 12 hours and the room feel dry, even after 5 loads! Sentinel HD90 Works great for our basement.highly recommend!
Very please with dehumidification and size.
By 'Cortez ', Reviewed on 2019-11-07 16:29:10
As a function for saving energy, the unit will completely turn off once it's reached its set point, only to immediately turn back on 2-4 mins later with a full compressor. My only complaint would be that there are no free replacement filters.
This dehumidifier is awesome, absolute best value if you want a 'beast of a dehumidifier'
By 'Elena ', Reviewed on 2019-10-24 09:35:30
Absolutely amazing! My basement is unfinished and musty due to a high water table in my area. Now, when I go down to do laundry it smells so fresh. The factory did a great job. Highly recommended.
Perfect Size for a basement &crawl space dehumidifier
By 'Shoaib ', Reviewed on 2019-10-15 11:08:22
It has been functioning as it should and I am pleased with it. This is the first basement dehumidifier I have tried. Thanks, AlorAir, for a dehumidifier that is working right, so far.
Hard Working
By 'Reader ', Reviewed on 2019-10-07 09:10:14
Luckily I had purchased a 5-YEAR warranty and received a full refund for the original unit. Based on web reviews it appears all brands of dehumidifiers have a high failure rate after a few years of use. Although I am hoping the this new replacement dehumidifier will last a lot longer than original.


Questions & Answers