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AlorAir® Sentinel HDi90 Basement & Crawl Space Dehumidifier(Build in Pump), Capacity: 90PPD (AHAM) 198PPD (Saturation)

Model : Sentinel HDi90

4.8 Average

$1,097.00 List Price: $1,550.00

Sentinel HDi90 dehumidifier is designed specifically for crawl spaces and basements. Low noise level, great COP,2.88/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 growth of mold and mildew. According to the America lung association, these are known allergens that can cause respiratory problems and asthma.

Key features

  • Quiet operation.
  • Energy efficient - Super COP Energy Star Listed 2.88L/Kwh.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options.
  • Hot Gas Valve Defrosting System.
  • Corrosion protection.
  • Overheating protection.
  • Engineered for low-temperature operation.
  • Coated Coils with Stainless Side Plate.
  • Heavy-Duty Condensate Pump.


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 air flow 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%)
  • 90 liters of water per day (220V(30º-80%)

 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 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 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 low noise level while operational hence will not affect your comfort levels.
  • Defrosting system - The sentinel HDi90 has a hot gas valve defrosting system that increases the efficiency of the dehumidifier, especially in low temperatures.
  • Easy installation and set-up - The sentinel HDi90 allow to 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 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 24/7 user support via email, phone or live chat. We are dedicated to helping all our customer 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
COP 2.88L/Kwh
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 Condensate Pump
Defrosting Control System HGV Defrosting
Functioning Temperature Range 33.8~104℉
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 50 responses

50 Ratings
4.8 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN % Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Total: 50 Reviews
Excellent dehumidifier!
By 'Asif Tran ', Reviewed on 2020-09-14 11:51:56
It arrived on time and was well packed without damage. We let it sit for 24 hours and then use it as directed. Since then, it has worked perfectly in our basement, cleared a lot of water, and mold has not grown again. We are very satisfied with this. Great product and great price. We are happy that the house is protected.
Humidity drop
By 'Pranav Paine ', Reviewed on 2020-09-07 11:41:17
I purchased this product to reduce the humidity in our basement storage room, which has an outward door. Humidity causes mold. I got this unit and the initial reading was about 70%. It drops to 50% in a short time. The feel and smell of the room are better. The device comes with a drain pipe. So far so good. I would recommend this product based on the first three weeks of use.
Very satisfied with Sentinel HDi90 dehumidifier
By 'Ksawery Christian ', Reviewed on 2020-09-01 12:01:44
This Sentinel HDi90 dehumidifier is stylish and easy to use! Easy to use! The easiest setting is to plug it in and open it. The shell is very strong, very strong! For those who want to run continuously, you can connect a drain hose, which is very quiet and attractive! My house can't smell musty when it rains.
Products worth buying
By 'Artur Lee ', Reviewed on 2020-08-24 14:51:52
I am very satisfied with this product. Recently, there was a water problem in my basement and I needed a reliable fast working machine. This unit pumps water out of the air so fast, so I connected a continuous drain hose to my sewage pump. Indeed, it did absorb about 90 pints of water from the air within 24 hours. Now that my basement is dry, I can rely on it to work well.
Efficient (to date) reliable dehumidifier with pump
By 'Ali Bartlett ', Reviewed on 2020-08-17 14:51:11
We purchased the dehumidifier and installed it in a crawl space with high humidity. Therefore, choosing a dehumidifier with a pump can keep running without having to manually empty the bucket. The dehumidifier is installed in a central location, and the (pump) hose is drained to the floor drain by connecting to the drain pipe. So far, it can perfectly keep the space dry, most of the time we are not close to the dehumidifier, so my evaluation of the noise level is not high. Overall, we are very satisfied with this purchase.
Excellent dehumidifier
By 'Briana Mcfarlane ', Reviewed on 2020-08-11 09:43:23
After moving to a new home, we found that the humidity level was always high, especially in the sweltering summer months. I purchased a separate hygrometer to verify the measurement results, and the humidity level exceeds 60%. I started to research options and found the Sentinel HDi90 dehumidifier. The equipment was purchased from Amazon and received in time as promised. We have been running 24/7 since the purchase. The effect is amazing. There is no problem maintaining the humidity at 45%, and it is very easy to drain the water. This unit is recommended.
Super quiet, efficient, amazing quality
By 'Varun Byrne ', Reviewed on 2020-08-03 15:04:47
This is the second dehumidifier we have, wow, it is much better than the first. The pump works well and drains quietly and efficiently into a nearby bathroom sink. And easy to install and set up. We put it on the first floor and it does improve the air quality. We would definitely recommend this dehumidifier to anyone.
Large capacity, quiet
By 'Kareena Dyer ', Reviewed on 2020-07-27 14:22:58
I bought it based on its capacity and the fact that it runs quietly. I have a medium-sized basement, but the humidity has been high since summer. We have just experienced heavy rain for a few weeks. Fortunately, my underground is not flooded. Our drainage system is very good. This machine can solve the problem and reduce the humidity to a comfortable level. The operation is simple, and the drainage is easy to do.
High-quality products, recommended
By 'Bill Wilkerson ', Reviewed on 2020-07-21 11:04:50
I recommend anyone try to use this device to repair the water damage in the home and get better service. Sentinel HDi90 covers a dehumidification area of 2,600 square feet at a reasonable cost, so you can also save money. Alorair provides super fast delivery and great service.
The right choice
By 'Eloise Patrick ', Reviewed on 2020-07-13 13:41:01
Sentinel HDi90 left a deep impression on me! It's better than I expected, it's simple to install, all options are great, and you can control it properly. This high-quality dehumidifier provides a very easy and convenient operation, without complicated and difficult to understand instructions, it is worth recommending.


Questions & Answers

1 Answer

Answered by Alorair
The filter can be cleaned and reused and is very easy to use.
What is the use of a condensate pump?

Ashley on 2020-09-08 10:09:57

1 Answer

Answered by Alorair
The main job of the pump is to force water into the drain. This means that every time the water level rises, the user does not need to empty the dehumidifier.
Answered by Alorair
It can work continuously.
What is the weight of this unit?

Evelina on 2020-08-25 13:40:38

1 Answer

Answered by Alorair
It weighs 78.0Ibs.
What is the size of this unit?

Courtnie on 2020-08-18 14:25:53

1 Answer

Answered by Alorair
23.2x15.2x17.7 (length x width x height) inches.

1 Answer

Answered by Alorair
R410A refrigerant.
What is the warranty period of this machine?

Jareth on 2020-08-05 08:30:30

1 Answer

Answered by Alorair
HDi90 has a 5-year warranty.
How many amps does it use?

Sultan on 2020-07-28 16:37:36

1 Answer

Answered by Alorair
Use 5.56A in the 115v circuit.
Is there a built-in drain pump?

Lia on 2020-07-22 09:17:19

1 Answer

Answered by Alorair
The machine is equipped with a condensate pump.
Does it have an Energy Star rating?

Jolie on 2020-07-16 12:01:04

1 Answer

Answered by Alorair
Yes, the Super COP Energy Star Listed 2.88L/Kwh.
Is there a prompt when to replace the filter?

Lily on 2020-07-07 14:21:57

1 Answer

Answered by Alorair
How much noise does the HDi90 make?

Kayla on 2020-04-27 15:59:16

1 Answer

Answered by Alorair
Less than 58DB.
Answered by Alorair
Please kindly find our hose size for Sentinel HDi90: Inside Diameter: 6 millimeters; Outer diameter: 10 millimeters.
Answered by Alorair
Yes, it need reset after a power outage. You can use a timer, but switching the unit on and off for a short time will damage the compressor.

1 Answer

Answered by Alorair
Answered by Alorair

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