AlorAir Basement/Crawlspace Dehumidifiers 198 PPD (Saturation), 90 Pints (AHAM), 5 Years Warranty, Condensate Pump, Auto Defrosting, Rare Earth Alloy Tube Evaporator, Remote Control (optional)

Model : Sentinel HDi90

4.9 Average

$1,147.11 List Price: $1,550.00


AlorAir Sentinel HDi90 dehumidifier with high COP is always a popular choice for large residential and commercial restoration projects! Not only does this unit offer higher efficiency, lower energy consumption ,and more reliability, but it also features a heavy duty condensate pump that makes draining faster and easier.

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

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Product Overview


AlorAir Sentinel HDi90 Conventional Dehumidifier 
Another sought-after dehumidifier that is best used for basements and crawl spaces is the AlorAir Sentinel HDi90 Conventional Dehumidifier. It is proven to extract all excess moisture without incurring a high electricity consumption. This makes it advantageous to both you and the environment.


· ENERGY STAR Certified - This unit can remove moisture quickly and efficiently with less energy than traditional dehumidifiers, which can save money and won't increase the energy bill.
· Ultra-compact design with super performance
· Adjustable foot pad and portable handle to transport and install easily
· Optional MERV-8 filter to protect internal components from damage from dust and other particles
· Heavy-duty built-in condensate pump to automatically drain water to any designated location
· Rare earth alloy tube evaporator to avoid freon leakage and prolong the service life of the coil
· Auto defrost technology to allow operation at low temperatures (36 degrees Fahrenheit)
· cETL Certified to withstand more rugged conditions 
· Precise humidity maintenance to automatically maintains your ideal humidity level from 36% to 90% 
· Automatic diagnosis system to get troubleshooting tips through error codes
· Auto Restart to automatically restart to previous settings after a power outage
· Easy to use graphical control panel
· Optional remote control for remote sensing and control areas
·  Supply duct optional


1. Protection from Diseases – Environments with high humidity are where harmful microorganisms live and harm the surfaces they reach. Their small size is often deceiving as they are able to be highly detrimental. Without proper extraction and prevention, they can bring various health risks such as allergies, skin irritations, respiratory illness, and immune-related diseases. Another harmful group that brings health risks are mosquitoes. They, too, thrive in humid places. They have the ability to infect a person with malignant diseases such as dengue or malaria. Fortunately, the use of a dehumidifier is the best proven way to prevent their growth and damaging effects.
2. Economical and Cost-Effective: Purchasing a dehumidifier is one of the best investments a person can make. It is designed to operate optimally with only a conservative use of energy. Moreover, with its long-term benefits, you are certain to have the most reliable prevention on common damages that take place because of excess moisture. Thus, investing on a dehumidifier saves you both time and money without having to do much.
3. Optimal Restoration Assistance – Because of its superb features and specifications, users are assured to obtain maximum performance to ease their restoration job. It is portable, durable, and very reliable when it comes to heavy water damage restoration projects.
4. Protection of Properties Against Damage – As the dehumidifier creates the most suitable breathing atmosphere to your home, it simultaneously keeps it inhospitable for harmful microorganisms to thrive and harm your valuables. You would not need to worry about molds in your clothes or shoes, damaged electrical wirings, and other related issues that come from having excess moisture.
5. Prioritized Safety Due to Prevention of Structural Issues – Accidents can be widely prevented when you have the constant effect of a dehumidifier at home that prevents excess moisture from weakening your home’s structure and foundation.
6. Conducive Work Place for Higher Productivity – It is a proven fact that a workplace is positively affected by its favorable breathing atmosphere. By providing a clean and safe ventilation, employees are certain to provide optimal productivity and benefit from each other’s motivated work ethic.

So, whether you are a homeowner or a business enthusiast, investing in a dehumidifier will surely provide you with all these benefits in your daily life.

More so, this and all of our dehumidifiers are supported by a dependable warranty coverage which you can check out in this website as well. For more inquiries, do not hesitate to contact any of our customer service representatives. We are more than happy to help you make a decision for your dehumidification 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)
Air flow 210 CFM,350 CMH
Sound Pressure Level <58 dBA
Refrigerant R410A
Draining Pump Draining
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33.8~104℉
Functioning Humidity Range 36~90%
Capacity115V(80ºF-60%) 90 Pints
Shipping Weight 70.5 Ibs (32 kg)
Dim(LxWxH) 23.2 x15.2 x17.7 in
Loading Quantity 20': 144 Sets ; 40': 292 Sets ; 40'HQ: 365 Sets

AlorAir Sentinel HDi90 Conventional Dehumidifier

Considering its impeccable features and specifications, this particular unit can be considered very competitive in the market, both for residential and commercial restoration projects. While a traditional dehumidifier, it doesn't shy away from producing the consistently high-quality results that LGR is known for



The AlorAir Storm Ultra LGR commercial grade dehumidifier features an ergonomic design for frequent transport and use, a sturdy housing that professionally protects its internal components, and an overall caliber that has made it one of the first choices for a variety of applications such as:

· Flood restoration
· Furniture drying
· Carpet drying
· Clothes drying
· Paint project
Humidity Control: Garage/Warehouse/Basement/Crawling Space/Store/Restaurant/Bar/Museum/Gym/Gym/Computer Room/Computer Room/Computer Room/Cellar/Office/Lab/Food Pantry


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 can use a foam coil cleaner to clean the coils
· Verify that the power cord is free of any debris and is properly wrapped and secured for storage
· Make sure it is properly dried before storing
If the device is submerged, make sure to turn it on carefully and let it dry completely before attempting to reconnect
· Seek professional help for other complex issues
Do not use the unit as a support or step stool before attempting to reconnect it

Be sure to read the manual and all other guidelines before using your dehumidifier or any related product. It is best to have all the important information ready in advance to reduce the risk of accidents and incidents.

Reviews & Questions

98% of customers recommend this item

90 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Live up to expectations
By 'Myles Lyons', Reviewed on February 22, 2021
The device has been set up to dehumidify our basement and the effect is very good. The humidity in the basement is monitored by a separate thermometer/hygrometer, and the reading on the dehumidifier is very accurate. This unit is much quieter than the unit we had before. We connected the hose so we don't have to drain, it keeps our basement free of moisture! Highly recommend! So far, so good.
Simple operation, Energy Star appliances
By 'Ayman Hayden', Reviewed on February 07, 2021
I was very shocked by the performance of this dehumidifier. No application is needed, just plug in the power source, set the required relative humidity, and you can use it normally. This machine is very quiet and I have connected the drain hose that comes with the dehumidifier. Can’t really say it's energy-efficient, because we only have a few weeks, but it is Energy Star certified, so I think it can help us save electricity bills.
Exceeded my expectations
By 'Miya Mullen', Reviewed on February 01, 2021
This machine is awesome! I bought it because the air in my basement smells damp. I have been using it for two months, and until now, the slightly musty smell has disappeared and I can hardly smell any strange smell. This dehumidifier is definitely worth it. My air smells better, so it can solve my problems and save me money. If needed, I will buy it again.
Worth investing
By 'Roshan Sanchez', Reviewed on January 25, 2021
The dehumidifier is easy to install. It can keep the humidity in the basement in good condition. Since we received this device, the musty smell in the space has improved significantly. Overall, I am satisfied with the purchase and recommend it as an ideal dehumidifier for basement humidity control.
highly recommended
By 'Karan Naylor', Reviewed on January 18, 2021
This dehumidifier is very good. I used it in the basement and it dried the basement and lower floors. well-done. The humidity is maintained at 50% to 55%. We like this dehumidifier so much that I plan to buy a second dehumidifier. I am impressed and happy with how it works! I highly recommend this product.
Control humidity quite effectively
By 'Gordon Doyle', Reviewed on January 11, 2021
I bought this dehumidifier to replace the old dehumidifier, and I can't believe the difference between the two. Within less than a week of running this dehumidifier, my entire basement was dry, and the air quality was significantly more comfortable. Quiet operation. I really like this machine and the work it does. So far it works well. Hope it continues to work!
This machine is a beast
By 'Darryl Avila', Reviewed on January 04, 2021
When my original equipment broke down, I purchased the dehumidifier to use in my basement. It thoroughly cleaned the air (no more basement odor) and removed all moisture. This process is really fast, I used a hose to keep running and draining water. If you want the dehumidifier to always run at home, there are a few things to consider.
This dehumidifier is amazing!
By 'Bailey Regan', Reviewed on December 28, 2020
We have a large basement, half-completed and half stored. This year, we ran into the trouble of surface mold in the storage area, and it took hours of labor to scrub everything clean. I installed this dehumidifier and set the humidity to 45-the device runs almost continuously and keeps the overall humidity of the basement at about 50%, which is ideal. A lot of water was collected within a few days after the dehumidifier was installed. With so much water, it is no wonder that we have surface mold. highly recommended!
Moisture problem solved
By 'Tyreke Whittaker', Reviewed on December 21, 2020
I didn't realize that the humidity in our basement was high. When cleaning, I found mildew spots under the sofa skirt. Then I bought this dehumidifier on the recommendation of a friend. I am very happy to have it. It has been installed, so it can now be drained automatically. There are now no signs of mold. Thanks to the dehumidifier. It makes my life better than before.
Excellent dehumidification solution
By 'Leona Gillespie', Reviewed on December 14, 2020
The Sentinel HDi90 dehumidifier is very durable. I have used it for several years and purchased this model again a few days ago. Amazon delivery is very fast, I received it within a week of submitting the order on Amazon. For those who change the dehumidifier frequently, I highly recommend it!


Can this unit be plugged into a timer to run sitting for specified hours?

Ben on September 25, 2021

1 Answer

Answered by Alorair
We do not advise plugging it into a timer as it does not allow the unit to shut off properly.
Can the unit work at a low temperature?

Cameron on July 28, 2021

1 Answer

Answered by Alorair
Hi Cameron, this unit is engineered for low-temperature operation.
Can the pump discharge water up? Thats where my nearest drain is

Matt on July 11, 2021

1 Answer

Answered by Alorair
Hi Matt, the pump can discharge water up. The machine is designed with continuous pump drainage. The sentinel HDi90 is equipped with a condensate pump that can pump the collected water out of the unit via a pipe. This water can be pump at a distance of over 5 meters.
I have some sleep problems and can be easily woken up by sound. Is this product noisy?

Sophia on July 07, 2021

1 Answer

Answered by Alorair
Hi Sophia! Sorry for your sleeping problem, and don't worry that product has a really good feature of silent operation. The sentinel HDi90 produces low noise levels while operational hence will not affect your comfort levels.
HDi90 model. Is the pump disposing of the collected humidity from the space or the condensation from the compressor?

Lillian on April 21, 2021

1 Answer

Answered by Alorair
It disposes of both. The point of the unit is to remove the humidity from closed space by condensation on the coils which then drops/drains into the pan & then is pumped thru the drain hose upward if necessary. There is no condensation on or from the compressor. It just pressurized the gas into the coils which expands cooling the coils which condenses the warmer, moisture-laden air that blown over the coils.
How often should I change or clean the filter?

Tyla on March 16, 2021

1 Answer

Answered by Alorair
Hello, please replace or clean the filter every 2-3 months. Thanks for your question!

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