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

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Product Overview


AlorAir Sentinel HD90 Conventional Dehumidifier 
This is one of the most reliable dehumidifiers in 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 elderlies, 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
· Can be remotely controlled (Remote is separately sold)
· 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) 23.2x15.2x17.7 in
Shipping Dim (L x W x H) 28.9 x19.3 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/Computer Rooms/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
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1 Stars
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Easy to use and very effective
By 'Serenity Wainwright', Reviewed on April 01, 2020
I didn't like spending money on what turned out to be stupid, so I read reviews and comparisons, and in the end, I bought this Sentinel HD90 dehumidifier and it was great. It works effectively and is easy to use. I empty it about once a week and clean the filter on average once a month. I am very satisfied if you are looking for a good quality dehumidifier and get strong customer support, then I recommend you choose AlorAir.
Satisfactory machine
By 'Jaydn Winter', Reviewed on March 25, 2020
It is a great dehumidifier to solve the basement damage restoration job. It helps me perfectly. It has great extra functionality that we everyone expects. This one can beat all of the previous dehumidifiers that I owned. I am pleased.
Good dehumidification option
By 'Ebonie Prentice', Reviewed on March 19, 2020
Surprisingly ... this AlorAir® Sentinel HD90 dehumidifier is very efficient. You wouldn't believe how much moisture there is in the air! This one combines high-tech design with professional-grade performance and portability. I think this is a very good thing to remove a huge amount of moisture. You will also be satisfied with its price. So definitely Recommended!!!
Dehumidifiers are very useful
By 'Raj Wells', Reviewed on March 16, 2020
This is a great dehumidifier. I only had one before, but it is not as good as this one. Super easy to use, equipped with easy-to-clean filters to catch any mold and other impurities in the air, it was done very efficiently in my basement, the bad smell never came back, we really like this Machines!
Large capacity dehumidifier
By 'Abbigail Buckley', Reviewed on March 12, 2020
The AlorAir® Sentinel HD90 dehumidifier is easy to operate and is ideal for dehumidifying in confined spaces.
Very good dehumidifier!!!
By 'Efe Potts', Reviewed on March 10, 2020
since we turned the machine on, it’s already gathered about an inch of water in just 12 hours and the room feel dry, even after 5 loads! Sentinel HD90 Works great for our basement.highly recommend!
Very please with dehumidification and size.
By 'Cortez', Reviewed on November 07, 2019
As a function for saving energy, the unit will completely turn off once it's reached its set point, only to immediately turn back on 2-4 mins later with a full compressor. My only complaint would be that there are no free replacement filters.
This dehumidifier is awesome, absolute best value if you want a 'beast of a dehumidifier'
By 'Elena', Reviewed on October 24, 2019
Absolutely amazing! My basement is unfinished and musty due to a high water table in my area. Now, when I go down to do laundry it smells so fresh. The factory did a great job. Highly recommended.
Perfect Size for a basement &crawl space dehumidifier
By 'Shoaib', Reviewed on October 15, 2019
It has been functioning as it should and I am pleased with it. This is the first basement dehumidifier I have tried. Thanks, AlorAir, for a dehumidifier that is working right, so far.
Hard Working
By 'Reader', Reviewed on October 07, 2019
Luckily I had purchased a 5-YEAR warranty and received a full refund for the original unit. Based on web reviews it appears all brands of dehumidifiers have a high failure rate after a few years of use. Although I am hoping the this new replacement dehumidifier will last a lot longer than original.


Where is filter located & How to change it?

Bentley on September 05, 2019

1 Answer

Answered by Alorair
The filter is on the side with the "ALORAIR" logo sticker. Just pull it out and replace it. Easy to remove and insert.
Does this unit have a hose connection for gravity drain option?

Samera on August 30, 2019

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier can be connected to a drain hose for gravity drainage, and it is equipped with a drain hose. Thanks for your question!