AlorAir Basement/Crawl Space Dehumidifiers 198 PPD (Saturation), 90 PPD (AHAM), Energy Star Listed, 5 Years Warranty, Auto Defrosting System, cETL, up to 2,600 sq. ft, Optional Remote Monitoring

Model : Sentinel HD90

4.9 Average

$1,047.11 List Price: $1,250.00


Compared to other similar products on the market, Sentinel HD90 has always been more advantageous due to its heavy-duty components and energy-saving feature. It has a powerful capability of dehumidification and can be strategically ducted in a different room/area.

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


Product Overview

AlorAir Sentinel HD90 Conventional Dehumidifier 
This is one of the most reliable dehumidifiers on the market. While it is also applicable for commercial use such as in office spaces, it is being widely used for basements and crawl spaces. This is mostly due to its stable and steady performance without incurring too much noise and electrical consumption. Homeowners are able to save while enjoying its dehumidifying capabilities.

Especially in a home with children and the elderly, it is important to maintain the safest indoor air quality to support their fragile health. This can be done by the use of a reliable dehumidifier. It will do its job of extracting excess moisture which is the reason for having a habitable environment for molds and other harmful entities that bring allergies, skin irritations, respiratory issues, and other immune-related diseases.

Compared to other similar products in the market, the AlorAir Sentinel HD90 Conventional Dehumidifier has always been more advantageous because of its heavy-duty features. It has a powerful dehumidification capacity and can be strategically ducted in a different room/area.



· Built with an automatic defrosting system
· Energy Star certified
· Has a high COP
· Has a remote control
· Gravity drained
· Equipped with a rare alloy tube evaporator
· Ergonomically designed for easy dismantling
· Has a rotary compressor
· Proven to extract the maximum amount of excess moisture even in environments with low humidity
· Has an intelligent power-off memory protection
· Has a compact design
· Supply duct optional Application



1. Protection from disease - Harmful microorganisms live in high-humidity environments and damage the surfaces they reach. Not properly extracted and prevented, they can cause various health risks such as allergies, skin irritation, respiratory illnesses, and immune-related diseases. Another dangerous group that poses health risks is mosquitoes. They also thrive in moist places. They can infect people with nasty diseases like dengue fever or malaria. Fortunately, a dehumidifier helps prevent their growth and harmful effects. 
2. Cost-effective: Buying a dehumidifier is one of the best investments a person can make. It's designed to function optimally and is energy-saving. Plus, it can prevent damage caused by excessive moisture in the long run.
3. Optimal remediation support - Users can be sure they'll get maximum performance to facilitate their remediation work. It's portable, durable, and reliable in the remediation of severe water damage.
4. Protecting property from damage - The place will be inhospitable to harmful microorganisms that could attack your valuables. 
5. Priority safety by preventing structural problems - can primarily prevent accidents if you have a dehumidifier at home that prevents excess moisture from weakening the structure and foundation of your home.  
6. Pleasant workplace - It's been proven that a workplace is positively affected by fresh air to breathe. When you provide perfect ventilation, your employees will be optimally productive and benefit from each other's motivated work ethic.  
More so, all of our dehumidifiers come with a reliable warranty, which you can also read about on this website. If you've any further questions, don't hesitate to contact our customer service representatives. We'll be happy to help you decide on your dehumidifier 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 Filter)
Air flow 210 CFM,350 CMH
Sound Pressure Level <58 dBA
Refrigerant R410A
Draining Gravity Draining
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33.8~104℉
Functioning Humidity Range 36~90%
Capacity115V(80ºF-60%) 90 Pints
Weight 67.2 Ibs (30.5 kg)
Dim(LxWxH) 23.2 x 15.2 x 17.7 in
Shipping Dim (L x W x H) 28.9 x 19.3 x 20.4 in
Loading Quantity 20': 144 Sets; 40': 292 Sets; 40'HQ: 365 Sets

AlorAir Sentinel HD90 Conventional Dehumidifier
Compared to other similar products in the market, the AlorAir Sentinel HD90 Conventional Dehumidifier has always been more advantageous because of its heavy-duty features. It has a powerful dehumidification capacity and can be strategically ducted in a different room/area.

Because of its high customer rating, not only is it being chosen for residential use, but also for commercial restoration projects

With its ergonomic design that eases its ability for frequent transportation and usage, its sturdy housing that expertly protects its internal components, and its overall caliber, the AlorAir Storm Ultra LGR Commercial-Grade Dehumidifier has been one of the top choices for various applications such as:

· Flood restoration
· Furniture Drying
· Carpet Drying
· Laundry Drying
· Painting Projects
· Humidity Control for: Garages/Warehouses/Basements/Crawl Spaces/Shops/Restaurants/Bars/Museums/Sports Hall/Computer Rooms/Cellars/Offices/Laboratories/Food Storage

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 may use a foaming coil cleaner for cleaning the coils
· Confirm that the cords are cleaned from any debris and are properly wrapped and secured for storage
· Make sure to properly dry it before storing
· If the unit gets flooded, make sure you completely let it dry by carefully opening it before attempting to reconnect it
· Seek professional help for other complex issues
· Never use the unit as a support or stepping stool when reaching high items

Make sure to read the manual and all other guides before using your dehumidifier, or any product for that matter. It is always better to be equipped with all essential information beforehand to reduce the risk of accidents and mishaps.

Reviews & Questions

98% of customers recommend this item

95 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Excellent product
By 'Khalil Strickland', Reviewed on May 05, 2020
This Alorair 90 pint dehumidifier can sense changes in humidity levels. We have a double storey house, we put it in the wettest place downstairs and use the remote control to adjust the dehumidifier settings. It also has some other powerful features, in short, worth every penny.
I hope it can be better
By 'Lillian Hale', Reviewed on April 30, 2020
We are not satisfied with this dehumidifier! It has many modern functions, such as detecting humidity changes, air filtration, remote control, etc. Its drainage method is gravity drainage, but for some reason, I hope it can drain through the condensate pump.
Powerful performance and diverse functions
By 'Lizzie Irving', Reviewed on April 28, 2020
This dehumidifier works very well, it removes a lot of water from the air. In addition, other aspects are also very good, small size, easy to install, an optional air duct can be used for focus dehumidification.
The first dehumidifier, very good
By 'Serenity Holden', Reviewed on April 25, 2020
I changed a big house, but the basement is relatively wet, so I bought a dehumidifier to solve the humidity problem. AlorAir® Sentinel HD90 is my first dehumidifier and I am very satisfied with it. I was surprised that the water tank was almost full on the first day, and I inserted a hose to drain the water. And it runs very quietly.
long-term use
By 'Louie Ward', Reviewed on April 21, 2020
This AlorAir® Sentinel HD90 dehumidifier is impressive. After 2 years of use, this machine still looks good. Despite the 5-year warranty, I think it can be used for a long time. It can be easily disassembled within one minute for easy maintenance and repair.
So far so good
By 'Kajetan Puckett', Reviewed on April 17, 2020
This is the Sentinel HD90 model. This unit has been in service for a week. Since the device has reached the humidity level I chose, it can only be operated intermittently to maintain a low humidity. If there are any problems with the dehumidifier, I will update this review (although I do n’t want to do so), but so far, I really like this product.
Eliminate mold
By 'Leoni Justice', Reviewed on April 14, 2020
I have a mold problem in one of my bedrooms. For this reason, I had to buy a dehumidifier to maintain relative humidity to eliminate the ability of mold growth. I am really satisfied with the performance of Sentinel HD90. Now there is no mold odor in the room, I can sleep well.
Very satisfied
By 'Faris Jeffery', Reviewed on April 10, 2020
I am very satisfied with this Sentinel HD90 dehumidifier. Compared to our previous old model, it is quiet. We are very satisfied with the purchase and the price impressed me. I think this is enough to solve the damage caused to the inventory and building maintenance due to moisture. It can adjust the settings remotely through the remote control, and many useful and flexible functions can help you use it perfectly.
a wide range of applications
By 'Joel Cortez', Reviewed on April 10, 2020
Sentinel HD90 dehumidifier has a wide range of applications, including crawl spaces, basements, offices, factories, shops, apartments, apartments, storage areas, restaurants, etc. where corrosion and mold growth occurs. The Sentinel HD90 is small and compact-compact and easy to carry. It can be accurately dehumidified everywhere, and it is easy to install and use. This is a good product.
really great
By 'Emilio Kane', Reviewed on April 02, 2020
Water damage is my daily issue so a better dehumidifier was a much-needed thing for me. This one is what I exactly looking for to solve my problem. I am using this Sentinel HD90 for removing Damp, Mould, and Moisture from Flood & Restoration, Carpet Cleaning, Basements, Laundries and it is working really great. It's really helped me to save my money and valuable time and most importantly I got a big relief from a very bad situation.


What is the warranty period of Sentinel HD90?

Acacia on August 25, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier has an extended 5 years warranty. Thanks for your question!
What is the drainage method of this device?

Jasmine on August 18, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier drains water by gravity. For effective drainage, please lead the drain pipe into the pit. Check to make sure it is flowing downwards. Thanks for your question!
What is the operating temperature range of this machine?

Louie on August 12, 2020

1 Answer

Answered by Alorair
Hello, the working temperature range of the Sentinel HD90 dehumidifier is between 33°F and 105°F. Thanks for your question!
How heavy is the device? Is it easy to move?

Habiba on August 05, 2020

1 Answer

Answered by Alorair
Hello, the weight of the Sentinel HD90 dehumidifier is 79.6Ibs. The dehumidifier is equipped with a heavy-duty belt for easy movement. Thanks for your question!
Does it have the ability to pump water from the basement to the washing machine drain on the first floor?

Lia on July 22, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is not equipped with a pump. It drains water by gravity, so it cannot pump the collected water from the basement to the washing machine drain on the first floor. Thanks for your question!
What is the size of the dehumidifier?

Enrico on July 16, 2020

1 Answer

Answered by Alorair
Hello, the size of the Sentinel HD90 dehumidifier is (LxWxH): 23.2 x 15.2 x 17.7 inches. Thanks for your question!
Is the remote control of Sentinel HD90 in the box with the machine?

Lily on July 07, 2020

1 Answer

Answered by Alorair
Hello, the remote control of the Sentinel HD90 dehumidifier is sold separately. Thanks for your question!
What size hose for continue draining fit this unite Sentinel HD90 Basement & Crawl Space Dehumidifier?

Rory on March 11, 2020

1 Answer

Answered by Alorair
Please kindly find our hose size for Sentinel HD90: Inside Diameter: 10 millimeters; Outer diameter: 16 millimeters.
Does this dehumidifier have a pump?

Philippa on October 31, 2019

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is not equipped with a pump, the Sentinel HDi90 dehumidifier is equipped with a pump. Thanks for your question!
Does it have an automatic defrost?

Katelyn on October 25, 2019

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier has an automatic defrost system to ensure that ice is quickly removed from the coil. Thanks for your question!

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