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
Overall feel good
By 'Braiden Hartman', Reviewed on July 13, 2020
The Sentinel HD90 90 pints has an excellent capacity, much quieter than my previous model, and the overall design is superior. The device looks very sturdy and could have been given 5 stars, but I don’t know how long it will last. If necessary, it will definitely be purchased in the future.
Exceed expectations
By 'Bree Beltran', Reviewed on July 06, 2020
My old dehumidifier has only been used for 2 years and now it is not working. Fortunately, we now have a better unit. Sentinel HD90 not only effectively reduces the humidity level but also filters harmful substances in the air. This is a feature that our old model does not have.
Small size and high capacity
By 'Margo Wilkinson', Reviewed on June 29, 2020
I purchased this Alorair® 90 pint dehumidifier a month ago. I thought it had a large size. In fact, it was a small unit. I couldn't imagine such a large capacity dehumidifier being so compact. It reduced the humidity in my basement from 80% to 45%. There is no problem at present, I hope it can be maintained.
Highly recommend this model
By 'Ross Houghton', Reviewed on June 22, 2020
Sentinel HD90 is a large-capacity dehumidifier. It is small and easy to carry. I usually need to dehumidify in different corners of the house. Although it is easy to move, I still bought two models of the same capacity.
Please give me some advice
By 'Britney Fountain', Reviewed on June 13, 2020
After getting the AlorAir® Sentinel HD90, I installed it in my basement loft. We live on the second floor, so I can't hear the sound of it running. I have to go downstairs often to check if it is working properly. This model is equipped with a remote control system, maybe I should buy a remote control, what do you think?
Quiet and convenient operation
By 'Jacques Cope', Reviewed on June 06, 2020
As most reviews have said, it has a quiet operation and effectively controls humidity levels within a range of 2,600 square feet. This dehumidifier can be installed in any space that requires dehumidification, and it can be used without technical knowledge.
High efficiency and low energy consumption
By 'Mikey Kim', Reviewed on May 29, 2020
My basement is very damp due to moisture. Coupled with the clogging of the drainage pipe in the basement, I had to spend a considerable amount of money to buy a dehumidifier to solve it. Thankfully, this AlorAir® Sentinel HD90 dehumidifier did not disappoint me. I can easily operate it, it effectively reduces the humidity to below 50%, and is conducive to purifying the air.
Suitable for our basement
By 'Leja Ellwood', Reviewed on May 22, 2020
This dehumidifier is very suitable for our basement. For reference, my basement is about 2300 square feet. We usually put some important things there, so keeping the air dry is helpful to protect the items from mold and moisture. If you Also want a comfortable basement, then I recommend you to buy it.
Designed for low temperature operation
By 'Abu Kelley', Reviewed on May 16, 2020
I have been using this product all the time, and I can safely say that AlorAir® Sentinel HD90 is one of the best choices for the crawling space dehumidifier. It can maintain normal operation at low temperatures, has a defrosting system, and operates quietly.
By 'Vivien Morin', Reviewed on May 08, 2020
This AlorAir® Sentinel HD90 90 pint dehumidifier is great! I replaced my old dehumidifier. I have used it for about 2 weeks. It runs quieter and extracts a lot of water from the air. The poorly considered thing is that I did not purchase a remote control and replaceable filters, but this is not a problem at the moment, and it does not affect the normal operation of the dehumidifier.


What is the water removal capacity of this dehumidifier?

Ellena on November 10, 2020

1 Answer

Answered by Alorair
Hello, the water removal capacity of the Sentinel HD90 dehumidifier is 198 PPD at saturation condition and 90 PPD at AHAM. Thanks for your question!
Does this dehumidifier use refrigerant?

Roza on November 03, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is equipped with refrigerant. Thanks for your question!
What is the COP of the dehumidifier?

Zeenat on October 27, 2020

1 Answer

Answered by Alorair
Hello, the COP of the Sentinel HD90 dehumidifier is 2.69 L/Kwh. Thanks for your question!
What is the working humidity of this equipment?

Manisha on October 20, 2020

1 Answer

Answered by Alorair
Hello, the working humidity range of the Sentinel HD90 dehumidifier is between 35% and 90%. Thanks for your question!
Does it come with a power cord???

Dione on October 13, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier comes with a power cord. Thanks for your question!
What is the CFM of the dehumidifier?

Skylar on October 06, 2020

1 Answer

Answered by Alorair
Hello, the air flow of the Sentinel HD90 dehumidifier is 210CFM. Thanks for your question!
Has the dehumidifier passed the CE certification?

Kitty on September 23, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier has cETL certification. Thanks for your question!
What is the rated power of this dehumidifier?

Roberto on September 15, 2020

1 Answer

Answered by Alorair
Hello, the power of the Sentinel HD90 dehumidifier is 115V / 60 Hz. Thanks for your question!
What is the minimum operating temperature of the device?

Fenella on September 08, 2020

1 Answer

Answered by Alorair
Hello, the minimum working temperature of the Sentinel HD90 dehumidifier is 33°F. Thanks for your question!
How often does the coil of this dehumidifier need to be cleaned?

Callen on September 02, 2020

1 Answer

Answered by Alorair
Hello, we recommend cleaning the coil of the Sentinel HD90 dehumidifier once a year. Please use an approved coil cleaner to ensure the best results. Thanks for your question!

Related Products