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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High-quality product, easy to dehumidify
By 'Kalum Abbott', Reviewed on 2020-09-21 13:17:57
Living on the Gulf Coast-a very humid environment. It always keeps the basement of my 1600 square foot house at 50-55% humidity. Surprised how much water is pumped out of the air. Easy to set up, the hose is easy to empty the tank. Essential equipment for humid weather.
Works well in the basement
By 'Charlene Searle', Reviewed on 2020-09-14 11:40:32
In Michigan, it has been raining for a few days, which made my basement very humid and moldy. After reading the reviews, I chose the AlorAir® Sentinel HD90 model. Upon arrival, I was happy to find that it was a "plug and play" device. Without assembly, the instructions are very simple. It kept running for several days, and I couldn't believe how much water is pumped from the air. Stable quality and easy to empty the water tank.
Super happy!
By 'Franky Shah', Reviewed on 2020-09-07 11:26:25
After it rained last week, my basement leaked. I removed the deposited water, but the carpet was still damp and I smelled musty the next day. I chose to buy a dehumidifier to dehumidify. The Sentinel HD90 is quiet and does a great job! Remove the moisture and terrible musty smell from the carpet. The performance of the product is in full compliance with the description. Great!
The effect of keeping my bathroom and basement dry is amazing
By 'Wayne Driscoll', Reviewed on 2020-09-01 11:44:16
It is very effective, and the amount of water in the air discharged from this machine is amazing. I am very sensitive to mold, which is really helpful for my master bathroom. I used to sneeze or feel dizzy there, but now I feel better. I also use it in the basement because there is also moisture in the air in my basement, which is also very effective and a great machine.
By 'Maddox Hanson', Reviewed on 2020-08-24 14:38:42
I am very happy that I bought this dehumidifier! I temporarily live in Virginia, and the humidity is annoying, the Sentinel HD90 dehumidifier has been working non-stop. I use it in the basement. My house is 2000 square feet. This unit is perfect for that size.
Reliable dehumidifier
By 'Giacomo Pace', Reviewed on 2020-08-17 14:40:28
We borrowed a dehumidifier from a friend and finally decided to bite the bullet and buy it. Every day, it pumps a lot of water from the finished basement and does make the area feel better, more comfortable, less humid, and warmer. Plus it is very quiet, so feel free to buy!
I am satisfied with this dehumidifier...
By 'Malak Michael', Reviewed on 2020-08-11 09:08:12
First of all, I want to say that I am very picky about dehumidifiers. My last one lasted for 3 years. The product I bought is amazing. It runs quietly, without annoying noise. And it is light and easy to move. We put it in the center of the house because our house accumulates a lot of moisture due to daily life, we have been afraid to go out for several months due to the virus. It is very easy to use and I highly recommend it.
Did a great job drying the basement
By 'Tyler Justice', Reviewed on 2020-08-03 14:47:21
We bought this because there are no ventilation holes in the basement. Our humidity is within 70%! I found that this device stimulates air circulation when it is running, so it produces an excellent effect in the basement. Now our basement feels and smells much better. I will recommend this excellent dehumidifier to everyone who wants to dry their room!
good results
By 'Kitty Cole', Reviewed on 2020-07-27 13:51:29
Our house is moldy. I bought a hygrometer and found that the air is very humid! Especially after someone takes a shower. So I bought this dehumidification device for the house, the plug-and-play operation is very simple, I did not buy additional accessories, for me, it is not needed now. It is placed in the corridor of the living room, we run it all day, and now the humidity is detected at about 40%, I hope it can be maintained.
Great manufacturer of dehumidifiers
By 'Raja Emerson', Reviewed on 2020-07-21 08:45:52
Somehow some moisture penetrated into the closet of the room and formed mold on the clothes. I realized that the overall humidity of my house is high, so I bought an AlorAir Sentinel HD90 dehumidifier to remove too much moisture from the room. This is a small size, very suitable for small spaces with high humidity. After using it for a week, I have completely relied on it. Now I run it in the basement, draining water by connecting a hose, and it feels great.


How much energy cost can be saved every year by using this ENERGY STAR dehumidifier?

Eesha on 2021-01-05 14:43:46

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier certified by Energy Star can save up to $250 in energy costs per year. Thanks for your question!
Is this dehumidifier equipped with a cleanable filter?

Rian on 2020-12-29 12:00:59

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is equipped with an easy-to-clean filter to capture any mold spores and other impurities in the air. Thanks for your question!
Does this dehumidifier have Energy Star certification?

Donna on 2020-12-22 13:30:58

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier has passed Energy Star certification. Since it is Energy Star rated, the dehumidifier will quickly remove moisture from the air without increasing your electricity bill. Thanks for your question!
Should the dehumidifier be placed close to the wall or parallel to the wall?

Leyton on 2020-12-15 09:16:09

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier should be placed parallel to the wall, making sure that they are not placed close to the wall. Thanks for your question!
What is the sound pressure level of the dehumidifier?

Oscar on 2020-12-08 09:53:24

1 Answer

Answered by Alorair
Hello, the sound pressure level of the Sentinel HD90 dehumidifier is less than 58DBA. Thanks for your question!
Is the dehumidifier equipped with a humidity sensor?

Elysia on 2020-12-01 11:22:25

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is equipped with an advanced humidity sensor that can notice changes in the humidity level in the bypass air design, thereby reducing short circulation and saving energy. Thanks for your question!
What is the effective dehumidification coverage area of this dehumidifier?

Ayman on 2020-11-24 13:24:22

1 Answer

Answered by Alorair
Hello, the dehumidification range of the Sentinel HD90 dehumidifier is up to 2,600 square feet. Thanks for your question!
Which refrigerant does this dehumidifier use?

Barney on 2020-11-17 10:17:17

1 Answer

Answered by Alorair
Hello, the Sentinel HD90 dehumidifier is equipped with an environmentally friendly R410A refrigerant. Thanks for your question!
What is the water removal capacity of this dehumidifier?

Ellena on 2020-11-10 13:44:48

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 2020-11-03 13:07:24

1 Answer

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