AlorAir Basement/Crawlspace Dehumidifiers 198 PPD (Saturation), 90 Pints (AHAM), 5 Years Warranty, Condensate Pump, Auto Defrosting, Rare Earth Alloy Tube Evaporator, Remote Control (optional)

Model : Sentinel HDi90

4.9 Average

$1,147.11 List Price: $1,550.00


AlorAir Sentinel HDi90 dehumidifier with high COP is always a popular choice for large residential and commercial restoration projects! Not only does this unit offer higher efficiency, lower energy consumption, and more reliability, but it also features a heavy-duty condensate pump that makes draining faster and easier.

Highlights: ENERGY SRAR certified/5 Years Warranty/ MERV-1 Filter/ Automatic Defrost/ cETL certified/ Optional Remote Control

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Product Overview

AlorAir Sentinel HDi90 Conventional Dehumidifier 
Another sought-after dehumidifier that is best used for basements and crawl spaces is the AlorAir Sentinel HDi90 Conventional Dehumidifier. It is proven to extract all excess moisture without incurring high electricity consumption. This makes it advantageous to both you and the environment.


· ENERGY STAR Certified - This unit can remove moisture quickly and efficiently with less energy than traditional dehumidifiers, which can save money and won't increase the energy bill.
· Ultra-compact design with super performance
· Adjustable foot pad and portable handle to transport and install easily
· Optional MERV-8 filter to protect internal components from damage from dust and other particles
· Heavy-duty built-in condensate pump to automatically drain water to any designated location
· Rare earth alloy tube evaporator to avoid freon leakage and prolong the service life of the coil
· Auto defrost technology to allow operation at low temperatures (36 degrees Fahrenheit)
· cETL Certified to withstand more rugged conditions 
· Precise humidity maintenance to automatically maintains your ideal humidity level from 36% to 90% 
· Automatic diagnosis system to get troubleshooting tips through error codes
· Auto Restart to automatically restart to previous settings after a power outage
· Easy to use graphical control panel
· Optional remote control for remote sensing and control areas
·  Supply duct optional


1. Protection from Diseases – Environments with high humidity are where harmful microorganisms live and harm the surfaces they reach. Their small size is often deceiving as they are able to be highly detrimental. Without proper extraction and prevention, they can bring various health risks such as allergies, skin irritations, respiratory illness, and immune-related diseases. Another harmful group that brings health risks is mosquitoes. They, too, thrive in humid places. They have the ability to infect a person with malignant diseases such as dengue or malaria. Fortunately, the use of a dehumidifier is the best-proven way to prevent their growth and damaging effects.
2. Economical and Cost-Effective: Purchasing a dehumidifier is one of the best investments a person can make. It is designed to operate optimally with only a conservative use of energy. Moreover, with its long-term benefits, you are certain to have the most reliable prevention of common damages that take place because of excess moisture. Thus, investing in a dehumidifier saves you both time and money without having to do much.
3. Optimal Restoration Assistance – Because of its superb features and specifications, users are assured to obtain maximum performance to ease their restoration job. It is portable, durable, and very reliable when it comes to heavy water damage restoration projects.
4. Protection of Properties Against Damage – As the dehumidifier creates the most suitable breathing atmosphere for your home, it simultaneously keeps it inhospitable for harmful microorganisms to thrive and harm your valuables. You would not need to worry about molds in your clothes or shoes, damaged electrical wiring, and other related issues that come from excess moisture.
5. Prioritized Safety Due to Prevention of Structural Issues – Accidents can be widely prevented when you have the constant effect of a dehumidifier at home that prevents excess moisture from weakening your home's structure and foundation.
6. Conducive Work Place for Higher Productivity – It is a proven fact that a workplace is positively affected by its favorable breathing atmosphere. By providing clean and safe ventilation, employees are certain to provide optimal productivity and benefit from each other's motivated work ethic.

So, whether you are a homeowner or a business enthusiast, investing in a dehumidifier will surely provide you with all these benefits in your daily life.

More so, this and all of our dehumidifiers are supported by dependable warranty coverage which you can check out on this website as well. For more inquiries, do not hesitate to contact any of our customer service representatives. We are more than happy to help you make a decision for your dehumidification needs.

Power 115 V/60 Hz
Current 5.56 A
COP 2.69 L/ Kwh
Size For Up to 2,600 Sq.Ft.
Filter MERV-1 (Optional MERV- 8)
Air flow 210 CFM,350 CMH
Sound Pressure Level <58 dBA
Refrigerant R410A
Draining Pump Draining
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33.8~104℉
Functioning Humidity Range 36~90%
Capacity115V(80ºF-60%) 90 Pints
Weight 70.5 Ibs (32 kg)
Dim(LxWxH) 23.2 x15.2 x17.7 in
Loading Quantity 20': 144 Sets; 40': 292 Sets; 40'HQ: 365 Sets

AlorAir Sentinel HDi90 Conventional Dehumidifier

Considering its impeccable features and specifications, this particular unit can be considered very competitive in the market, both for residential and commercial restoration projects. While a traditional dehumidifier, it doesn't shy away from producing the consistently high-quality results that LGR is known for



The AlorAir Storm Ultra LGR commercial grade dehumidifier features an ergonomic design for frequent transport and use, a sturdy housing that professionally protects its internal components, and an overall caliber that has made it one of the first choices for a variety of applications such as:

· Flood restoration
· Furniture drying
· Carpet drying
· Clothes drying
· Paint project
Humidity Control: Garage/Warehouse/Basement/Crawling Space/Store/Restaurant/Bar/Museum/Gym/Gym/Computer Room/Cellar/Office/Lab/Food Pantry


Proper use and maintenance

Every dehumidifier needs proper usage and maintenance to support its long-lasting capability. Here are some safety tips for using and maintaining it:
· Before using it, keep it steady in an upright position for about 30 minutes to allow the refrigerant and other internal components to settle
· If the unit is newly delivered, let it settle for about 12 hours before using it
· Make sure that your desired area is well-sealed by either shutting all windows, vents or using other barriers
· It must be connected to a grounded electric source to avoid accidents and damage
· Make sure you have the right power supply to avoid electrical issues
· It is not suggestible to use an extension cord as well as a power adaptor
· Use the control panel or remote to set your desired level of humidity
· The surface in which it is set to operate must be leveled and steady
· Do not position the discharge and inlet onto a wall
· Never tamper with the internal components while the unit is running
· Always maintain a 6ft. distance from any form of obstruction
· Avoid deploying it in areas with a high amount of corrosive materials
· Make sure to properly unplug it before deploying it to another area
· Never leave it plugged when not in use
· When cleaning, use a damp cloth dipped in mild soap solution in wiping its exterior
· Remember to check the inlet and outlet for any blockages
· Annually check up the coils for maintenance

· You can use a foam coil cleaner to clean the coils
· Verify that the power cord is free of any debris and is properly wrapped and secured for storage
· Make sure it is properly dried before storing
If the device is submerged, make sure to turn it on carefully and let it dry completely before attempting to reconnect
· Seek professional help for other complex issues
· Do not use the unit as a support or step stool before attempting to reconnect it

Be sure to read the manual and all other guidelines before using your dehumidifier or any related product. It is best to have all the important information ready in advance to reduce the risk of accidents and incidents.

Reviews & Questions

98% of customers recommend this item

90 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Helped me a lot
By 'Misty Clark', Reviewed on May 08, 2020
This Sentinel HDi90 basement dehumidifier is my life-saving straw. When I cleaned the basement last week, I found a serious problem with a lot of mold under the carpet. I had to clean the carpet and floor for this. I used a dehumidifier and air mover to dry and dehumidify, and now there is no sign of mold.
Great machine
By 'Murray Gilbert', Reviewed on May 05, 2020
This AlorAir® Sentinel HDi90 basement dehumidifier does not take up much space and operates quietly. So far, I love this dehumidifier! Easy to install and simple to use.
Good assistant for repair work
By 'Ayoub Hilton', Reviewed on April 30, 2020
I am a water repair expert. A few days ago, I took this recently purchased 90-pint basement dehumidifier with a pump to the customer ’s home to solve her moisture problem. Within about a day, the humidity dropped to 45%. Very Glad I have the same good tools, which makes me more confident.
Great choice
By 'Luke Cole', Reviewed on April 28, 2020
I made a difficult choice and finally decided to buy this dehumidifier for my basement. I also purchased a remote control, which is the recommended product for this purchase. This is a good device. It dries a lot of moisture and the basement becomes warm. Facts have proved that my choice is right.
Quickly reduce the humidity level
By 'Kalvin Forster', Reviewed on April 25, 2020
I am very happy to order the AlorAir® Sentinel HDi90 dehumidifier for my basement. Some moisture has condensed on the floor and walls of the basement, and the humidity measurement shows that the humidity reaches more than 80%. I have been using it for a week and have observed the difference. Finally, I just want to say that this is really great!
Solve my problem
By 'Isra Milner', Reviewed on April 21, 2020
Excellent customer service! I purchased the AlorAir® Sentinel HDi90 dehumidifier two weeks ago. The humidity in my basement has increased and the basement water pipe is leaking. As soon as the dehumidifier arrived, I immediately installed and operated it. The effect is very obvious, this is a great dehumidifier manufacturer.
The filter captures mold and other air impurities
By 'Persephone Lucas', Reviewed on April 17, 2020
There is a lot of mold on the walls of my basement. This is undoubtedly my fault. I didn't notice the dampness in the basement. I looked for a suitable dehumidifier on Amazon to solve my problem, and finally, I chose Sentinel HDi90. The reason is very simple, I like its air-filtering function.
works well
By 'Nikkita May', Reviewed on April 16, 2020
After I received the AlorAir® Sentinel HDi90 dehumidifier, I immediately put it into work, it works normally and performs well. It is super easy to use and install, I will definitely recommend it.
my life better than before
By 'Bibi Hurst', Reviewed on April 10, 2020
The humidity in our basement is very high. I called the contractor to solve my problem. The experts brought this AlorAir® Sentinel HDi90 dehumidifier. I am very happy to hire it. It has been installed and there are no signs of mold now, and our basement is dry and comfortable. Thanks to the contractor and dehumidifier. It makes my life better than before.
my first dehumidifier
By 'Karis Maddox', Reviewed on April 10, 2020
For commercial purposes, I moved to Texas, where the humidity is much higher than in other areas. I am used to opening windows to let in fresh air. This is my first dehumidifier. What surprised me was how much water it pumped out. Sentinel HDi90 is equipped with a condensate pump that can draw the collected water through a pipeline at a distance of more than 5 meters. It is Energy Star rated, so I do n’t have to worry about how much my electricity costs.


Is there a built-in drain pump?

Lia on July 22, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a condensate pump, which can pump the collected water out of the device through a pipe. Thanks for your question!
Does it have an Energy Star rating?

Jolie on July 16, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier has Energy Star certification, so the dehumidifier will quickly remove moisture from the air without increasing your electricity bill. Thanks for your question!
Is there a prompt when to replace the filter?

Lily on July 07, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier will not prompt you to replace the filter, so you need to check the filter yourself to determine if you need to replace it before starting the device. Thanks for your question!
How much noise does the HDi90 make?

Kayla on April 27, 2020

1 Answer

Answered by Alorair
Hello, the noise level of the Sentinel HDi90 dehumidifier is less than 58DBA. Thanks for your question!
What size hose for continue draining fit this unite Sentinel HDi90 Basement & Crawl Space Dehumidifier?

Rory on March 11, 2020

1 Answer

Answered by Alorair
Please kindly find our hose size for Sentinel HDi90: Inside Diameter: 6 millimeters; Outer diameter: 10 millimeters.
Does the unit shut off when room humidity goes below setting?

Tabatha on September 29, 2019

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier has an automatic humidistat control function. When the humidity level in the space is lower than the set value, the dehumidifier will automatically shut off. Thanks for your question!
Does the unit shut off when the set humidity level is reached?

Samera on August 30, 2019

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier will automatically shut off when the set humidity level is reached. Thanks for your question!

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