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
NAN% Complete
1 Stars
NAN% Complete
Amazing dehumidifier!
By 'Lena Acosta', Reviewed on February 07, 2021
This is really an amazing dehumidifier, it works very well, it is very quiet, the device is not too bulky and easy to use. We use it in the basement to control the humidity there and connect the supplied hose for automatic drainage. It has been in existence for several months and can maintain humidity at around 50% without problems. I highly recommend this product.
Satisfied with our purchase
By 'Charlize Morton', Reviewed on February 01, 2021
This is an effective dehumidifier, suitable for our basements above 2000 square feet. We have been using it for more than two months, essentially plugging it in and forgetting it. It has reduced the humidity to a comfortable level, which greatly reduces the musty smell. The noise level is so small that we don't pay much attention. If needed, I will buy it again.
The product is very effective
By 'Elsie Wagner', Reviewed on January 25, 2021
The product really works. I use it in a basement where the air is very humid and full of moisture. My office is in the basement and I stay there most of the time. When I realized that the office was humid, I decided to buy a dehumidifier. I read a lot of reviews and finally ordered the product. I am very happy. Since using this product, the air is obviously less humid and the environment is more comfortable. The dehumidifier does not take up much space and is very easy to install and use. It does not make a lot of noise, I just hope to buy it sooner. I would recommend it to anyone.
Well-made dehumidifier
By 'Wasim Wood', Reviewed on January 18, 2021
After noticing the mold, we purchased this unit for the basement. We have conducted a lot of research and found that this is in line with our needs and price point. We are very satisfied with the purchase. We used it in a finished basement with an area of 1,800 square feet, and the amount of water pumped out far exceeded our expectations. The smell and musty smell disappeared. Glad we purchased this equipment.
Do this job
By 'Hisham Bright', Reviewed on January 11, 2021
We use it in basements with high humidity. The difference on the second day is huge. I connected the drainpipe to the floor drain with a hose and kept pouring water into it. I know there is some moisture in the basement, but I don't know how much until I use it. The device is quiet and very easy to use and move. Value for money.
Really efficient
By 'Reuben Downs', Reviewed on January 04, 2021
I absolutely love this dehumidifier! It can reduce the humidity in my basement from 70% to 50%! Very quiet and easy to operate. I let it work in continuous mode, connect the hose and drain water continuously. I like the coil defrost function, which makes it work properly at low temperatures.
Powerful dehumidifier
By 'Samera Knights', Reviewed on December 28, 2020
It doesn't sound at all. Much quieter than my previous dehumidifier. It is very good, it can suck water from the air and make my basement dry. Don't worry about the price, you will get everything you need to pay, and I have never regretted my purchase once. I have been using it for 6 months and it will remain strong even if I use it almost constantly.
We like it!
By 'Nadeem Benitez', Reviewed on December 21, 2020
This 90-pint dehumidifier did meet my expectations. Before buying, I did a lot of research and found that this is exactly what we need. We use it in the basement, which can maintain humidity well. I started storing some wood and some books without worrying about mold. recommended!!!
Good performance and easy to set up
By 'Yazmin Dejesus', Reviewed on December 14, 2020
The Sentinel HD90 dehumidifier can remove moisture quietly. Very quiet during operation. good results. It is very simple to set up and use. It can move the air easily. And you don't need to empty the water tank. Very suitable for basements and crawl spaces. Overall, it is highly recommended.
Great value
By 'Ronny Ratliff', Reviewed on December 07, 2020
This dehumidifier works well. Since there is only gravity drainage (no pump), I had to place the dehumidifier above the drainage connection. I like the transparent tube, so you can see the water flowing. I can check to make sure it works.


What are the benefits of inlet or outlet ducting?

Pearl on October 06, 2021

1 Answer

Answered by Alorair
It will give you an option to dehumidify a different room from where the dehumidifier is.
What is the remote controller mentioned in the above specs?

Gigi on September 26, 2021

1 Answer

Answered by Alorair
It can control the unit separately, connect the remote control to another room you want to monitor, and be available in our store.
Is the pump disposing of the collected humidity from the space or the condensation from the compressor?

Leif on September 19, 2021

1 Answer

Answered by Alorair
The evaporator drains moisture into the pump, which drains moisture out of the unit. The pump helps to lift the water up to 5 meters if you are draining upwards.
Where is the air taken in and where is it exhausted? I want to install it behind the grill on the wall, or hide it in some way.

Dark on September 13, 2021

1 Answer

Answered by Alorair
The air is sucked into the unit from the front panel (black) and blown out on the right side. You need to ensure that the unit has good air following conditions, and the air follows smoothly without being stuck.
What is the lowest humidity that the device can reach?

Jack on September 10, 2021

1 Answer

Answered by Alorair
The unit has a continuous CO mode, which means it will dehumidify until you turn it off.
What is the decibel value of this dehumidifier when it is operating?

Levi on July 27, 2021

1 Answer

Answered by Alorair
Hi Levi, the decibel value of this dehumidifier is below 58 DBA.
Does this dehumidifier work at low temperatures?

Quincy on July 26, 2021

1 Answer

Answered by Alorair
Hi Quincy, this unit can work at low temperatures.
I was really interested in the feature of the Auto humidistat, can you explain it a little bit more in detail?

Chloe on July 07, 2021

1 Answer

Answered by Alorair
Hi Chloe! Thank you for your interest in our product. For the Auto humidistat feature, the sentinel HD90 is equipped with an advanced humidity sensor that can notice changes in humidity levels in the bypass air design reducing short cycling and saving energy.