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AlorAir® Sentinel HDi90 Duct-able Version Basement/Crawl Space Dehumidifiers 198PPD (Saturation) 90 Pints (AHAM), Condensate Pump, Automatic Defrosting, Epoxy Coating, Remote Control (Optional)

Model : Sentinel HDi90

4.9 Average

$1,047.00 List Price: $1,550.00

Sentinel HDi90 dehumidifier is designed specifically for crawl spaces and basements. Low noise level, great COP,2.69 L/kwh, and huge capacity 90PPD at AHAM condition.
Draining Mode: Condensate Pump

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Crawlspaces or basements tend to have increased humidity levels. This is mainly because these spaces are either partially or completely underground. Once the moist air comes into these spaces, the moisture condenses on the walls or floor. This causes increased dampness.

Increased dampness creates the perfect environment for increased dust mites and the growth of mold and mildew. According to the American lung association, these are known allergens that can cause respiratory problems and asthma.

Key features

  • Quiet operation.
  • Energy-efficient - Super COP Energy Star Listed 2.69L/Kwh.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options.
  • Automatic Defrosting System.
  • Corrosion protection.
  • Overheating protection.
  • Engineered for low-temperature operation.
  • Rare earth alloy Tube Evaporator


The sentinel HDi90 is horizontally configured, built with an advanced airflow design that makes this unit the best choice for dehumidification in tight spaces with airflow issues.

The sentinel HDi90 is uniquely built to be deployed in:

  • Residential spaces.
  • Restoration jobs.
  • Shop.
  • Storage facilities.
  • Garages.
  • Laboratories.
  • Offices
  • Crawlspaces.
  • Basements.

Capable of maintaining humidity levels controlled in any space below 2,600 sq. Ft.

All-purpose use

Capacity. - The sentinel HDi90 is able to remove:

  • 90 pint of water per day(115V(80ºF-60%)

 This is impressive especially because of its small size and low energy consumption.

Performance. – The sentinel HDi90 combines a number of features to effectively lower the humidity levels. These features include:

  • Continuous Pump drainage - sentinel HDi90 is equipped with a condensate pump that is able to pump the collected water out of the unit via a pipe. This water can be pump at a distance of over 5 meters.
  • Durably built - The sentinel HDi90 has a corrosion protection layer that protects the unit from the corrosive environment in which it will be deployed.
  • Air filtration - The sentinel HDi90 has a washable filter that traps mold spores and other air impurities to improve the indoor air quality.
  • Silent operation - The sentinel HDi90 produces a low noise level while operational hence will not affect your comfort levels.
  • Defrosting system - The sentinel HDi90 has an auto defrosting system that increases the efficiency of the dehumidifier, especially in low temperatures.
  • Easy installation and set-up - The sentinel HDi90 allow a variety of installation option, all of which are easy and don’t require you to hire a technician. This is a plug and plays appliance with no technical knowledge needed.
  • Duct options – A duct can be added to the sentinel HDi90 to provide focused dehumidification or allow you to dehumidify space where the dehumidifier can fit or you can use the duct to connect the sentinel HDi90 to the existing HVAC system for whole-house dehumidification.
  • Remote control - The sentinel HDi90 allows you to remotely adjust the dehumidifier setting remotely. This makes it convenient to operate a dehumidifier in a tight space. (Sold separately)

Warranty – The sentinel HDi90 has an extended 5 years warranty. At Alorair we have designed and built the sentinel HDi90 dehumidifier to exceed the customer quality expectations. All sentinel HDi90 units are thoroughly tested and proven to be fully functional.

Support – All Alorair customers get to enjoy efficient user support via email, phone, or live chat. We are dedicated to helping all our customers with any challenges they may face while operating the sentinel HDi90.

The sentinel HDi90 has lots of unique features that all combine to efficiently and effectively control the humidity levels! invest in the sentinel HDi90 today!

Power 115V/60HZ
Current 5.56A(115v/60Hz)
COP 2.69L/Kwh(115v/60Hz)
Size For Up to 2,600 sq.ft.
Filter Clean Air Filter,HEPA,MERV-8
Air flow 210 CFM,350 CMH
Sound Pressure Level <58DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Condensate Pump
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33~104℉
Functioning Humidity Range 35~90%
Capacity115V(80ºF-60%) 90 Pints
Weight 85.9 Ibs
Dim(LxWxH) 23.2x15.2x17.7in
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

97% Recommend this product of 39 responses

39 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN % Complete
2 Stars
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1 Stars
NAN% Complete
Total: 39 Reviews
Very worth the price!
By 'Klay Mcdermott ', Reviewed on 2021-02-01 14:05:39
We have had a dehumidifier for several months, and so far so good! Everyone who enters the basement can see the difference. It comes with a hose, which can be connected to the drainpipe for continuous operation. We directly discharged it into the sewage pump and the effect was very good. This is a small but powerful unit! Very satisfied with our purchase.
Absolutely love this!
By 'Sylvie Hastings ', Reviewed on 2021-01-25 14:46:52
I bought it a few months ago and it has been working tirelessly in my basement. It is much quieter than my previous dehumidifier. It is beautiful in appearance, easy to use, and can be directly drained into the floor drain by connecting a drain hose. It just should work. I am satisfied with the purchase because it is better than I expected.
So far, the dehumidification effect is very good.
By 'Clara Gordon ', Reviewed on 2021-01-18 13:16:19
I think the device cannot control the moisture in the barn, but it works very well. Usually, at this time of the year, my floor is cold, the air is warm, and everything in my barn is sweaty, which tends to ruin things, but so far, it’s been several weeks and it’s done Very well. I am very satisfied with this dehumidifier. I recommend it to anyone trying to control humidity in a large area.
Very quiet and efficient unit
By 'Renee Moody ', Reviewed on 2021-01-11 13:59:28
After comparing several brands of basement dehumidifiers, I bought this 90-pint Sentinel HDi90 to reduce the humidity and musty smell in the basement. Before this, I have never heard of the Alorair brand. But the device is very effective, the dehumidification effect is very good and relatively quiet. It is worth my recommendation.
Fashionable and super quiet!
By 'Daniele Bonilla ', Reviewed on 2021-01-04 11:26:54
I need to replace the small dehumidifier I bought a year ago. After a lot of research, I found this model. The reviews are great and fully functional. After using it, I couldn't believe how much moisture is absorbed from the basement. This machine is super attractive and very quiet. I am very satisfied with the replacement. highly recommended.
Excellent dehumidifier
By 'Aleisha Bannister ', Reviewed on 2020-12-28 11:17:33
I live in a very humid apartment. Even in winter, there is a lot of water flowing on our windows and an unpleasant musty smell. This dehumidifier drew a lot of water from the air, and the smell has disappeared. I am very satisfied with the efficiency of this dehumidifier. If your house/apartment is wet, then this quiet and efficient dehumidifier will be your solution!
The perfect dehumidifier
By 'Patsy Friedman ', Reviewed on 2020-12-21 13:42:21
I bought this dehumidifier last month and I will talk about its impression on me. First of all, it is very lightweight, I can move it to any corner of the room. It has pipes for centralized dehumidification and can quickly dry the room. I especially like its remote control and condensate pump drainage function, which is really convenient. If you are looking for a new dehumidifier, be sure to try it.
Excellent basement & crawl space dehumidifier!
By 'Alissia Orozco ', Reviewed on 2020-12-14 09:29:29
Sentinel HDi90 dehumidifier is different from other brands. The equipment is well made, compact, and durable. Equipped with remote control and a condensate pump, it almost seems to be tailor-made for me. The five-year warranty saves me from worrying about it being left unattended if something goes wrong. This is expensive, but it does a great job of controlling the humidity in the basement & crawl space.
Very good product
By 'Mariella Mills ', Reviewed on 2020-12-07 10:32:51
Our basement is very humid, so we have to buy a dehumidifier all year round. Before encountering this dehumidifier, I tried many brands. It has a remote control function, which is very convenient and does not need to waste time and energy to drain The collected water, because it has its own pump, is a condensate pump that can pump the water out of the space and then pour it out of the house. I highly recommend it.
Rest assured to buy excellent performance
By 'Suman Patrick ', Reviewed on 2020-11-30 10:59:03
The dehumidifier worked for about 2 weeks. It runs quietly and draws a lot of water from the air. This unit is in the basement of my house. My troubles before installing the unit in my basement are now gone. In the past 7 years, I have traversed 3 different brands of products, all of which are noisy. Now, I have connected the drain hose to the equipment and drained it directly into the sewage pump in my house. So far, I am very satisfied with the performance of this machine. If you need a dehumidifier, I suggest you rest assured to buy this machine.


Questions & Answers
What is the power of the dehumidifier?

Lyndon on 2021-01-26 15:27:06

1 Answer

Answered by Alorair
Hello, the power of the Sentinel HDi90 dehumidifier is 115V/60Hz. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a pre-filter, MERV-8 filter. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier can be controlled remotely by connecting a wired remote control, which is sold separately. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the working temperature range of the Sentinel HDi90 dehumidifier is between 33℉~104℉. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is specially designed for low-temperature operation and can work normally at low temperatures. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the working humidity range of the Sentinel HDi90 dehumidifier is between 35% and 90%. Thanks for your question!

1 Answer

Answered by Alorair
Hello, the dehumidification range of the Sentinel HDi90 dehumidifier is up to 2,600 square feet. Thanks for your question!
What is the CFM of the dehumidifier?

Oscar on 2020-12-08 09:54:38

1 Answer

Answered by Alorair
Hello, the air flow of the Sentinel HDi90 dehumidifier is 210 CFM. Thanks for your question!
What is the warranty period of the dehumidifier?

Elysia on 2020-12-01 11:25:07

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier has an extended 5 years warranty. Thanks for your question!
What is the capacity of this dehumidifier?

Ayman on 2020-11-24 13:29:54

1 Answer

Answered by Alorair
Hello, the water removal capacity of the Sentinel HDi90 dehumidifier is 198 PPD at saturation condition and 90 PPD at AHAM. Thanks for your question!