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

4.8 Average

Model : Sentinel HD90
  • +1More
$1,199.00 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

95% Recommend this product of 21 responses

21 Ratings
4.8 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
300% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Total: 21 Reviews
Best dehumidifier & you can buy
By 'Georga', Reviewed on 2019-12-26 13:34:35
AlorAir Solutions Inc is a great company. The Sentinel HD90 Basement &Crawl Space Dehumidifier experience is one of the best. The water pipe of this dehumidifier is long enough. We do not need to empty it daily and we are in drought conditions. I imagine when it's humid the dehumidifier will drain more water.
Best dehumidifier & you can buy
By 'Georga', Reviewed on 2019-12-26 13:33:35
AlorAir Solutions Inc is a great company. The Sentinel HD90 Basement &Crawl Space Dehumidifier experience is one of the best. The water pipe of this dehumidifier is long enough. We do not need to empty it daily and we are in drought conditions. I imagine when it's humid the dehumidifier will drain more water.
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.
By 'Mariana', Reviewed on 2019-09-27 13:12:29
This is the first 90 qt dehumidifier I have purchased. This unit drained into a sink. I have bought 70 qt dehumidifiers and they seems work samilier daily.
Very Nice Unit
By 'Marcie', Reviewed on 2019-09-10 20:00:09
I'm very happy with it. This Sentinel HD90 unit works so much better. We use this unit in our workshop that has gas radiant heat. The heater throws out a lot of moisture during the winter and the old dehumidifier we have would frost up on really cold days trying to keep up. But this unit keeps up without a problem.
Easy set up, Does what it says!
By 'Omari Clemons', Reviewed on 2019-08-27 08:14:48
We live in the southeast with high humidity in the summer months. It seems the AlorAir® Sentinel HD90 Dehumidifier is working fine. It is easy to set up. I just do what it says. I think it may have some catching up to do as the humidity is still about 45% after a week. It has fluctuated. I would have thought it would have pulled more water than it has. I've only emptied the bucket twice. But now I attached the garden hose which is easier.
Sure A Workhorse! Would get another!
By 'Lizzie Phillips', Reviewed on 2019-08-19 12:32:03
We got this model because of its high rating in customer reviews. This Sentinel HD90 dehumidifier has been working great in my basement for a long time. So far it's been great.


Questions & Answers
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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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

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