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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
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.
Excellent purchase!
By 'Abdul Davey ', Reviewed on 2019-08-12 19:26:04
I live in humid TX and decided the 90pints dehu would help me smell better in the basement, it is helping. Here's the second part of the review. I've had the unit for a week. The unit is very quiet. In a quiet room, I can't hear it 2 feet away. Up closer you can hear air rushing through the vents.
It is more effective than our expected
By 'Jad Mustafa ', Reviewed on 2019-07-25 11:59:53
We have a basement is moldy, musty smell, and stale air down there. Our big washer located there and so I make several trips downstairs every week. It does its job well! AlorAir delivered this item in record time ( I think 5 days) for a shipping cost. I was impressed since it weighs about 50 pounds with all of its boxes. Requires two people to remove from box as it has to be lifted vertically. The alternate for one person is being very cautious with a case cutter to slice the box corners without cutting too deep. Now I feel like I just opened up a huge addition to my house which before, I could not bear to enter.
Awesome Dehumidifier
By 'Isabelle Guest ', Reviewed on 2019-07-05 10:04:09
Alorair Sentinel HD90 is pretty good! Our basement was plagued with black mold. The little dots would appear along the tops of the walls shortly after I'd scrubbed them or painted over them, and then returned to its original again a few weeks later. Now that things have changed, it is performing well and flawlessly. I am pleased to see that the walls are now clean for a long time when it is running. Highly recommend this product and Alorair.
This Sentinel HD90 dehumidifier works like a champ
By 'Bill Esparza ', Reviewed on 2019-06-27 19:38:59
I'm glad I bought the appropriate size, it does the job fine and is easier to empty in my basement.
Doing great to keep the humidity at a reasonable level in my basement
By 'Ingrid Pike ', Reviewed on 2019-06-26 10:17:43
I bought the Sentinel 55 pint first, then bought a Sentinel 90 pint too. The HD55 seems to run well....if considering a purchase I would recommend the 90 pints. I have the 90 in my small basement. Now the air in my basement smells much nicer when I went in. I highly recommend this machine if your basement is too humid.
Big things DO come in small Packages
By 'Ly Rio Searle ', Reviewed on 2019-06-21 08:11:07
It’s just a quiet hum. I could not put up with the other dehumidifiers in my basement but this one does not bother me at all.


Questions & Answers