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

Buy on Amazon is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Additionally, participates in various other affiliate programs, and we sometimes get a commission through purchases made through our links.
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
Very satisfied with the purchase
By 'Edison Crane', Reviewed on December 07, 2020
We have some mold problems in our house, which prompted me to buy a dehumidifier. I only used it for a few days and it did a great job. Easy to set up... basically you can plug in and open! It is a beautiful machine. The instructions are great. I hope it will continue. Very satisfied so far.
The best dehumidifier!
By 'Mihai Romero', Reviewed on November 30, 2020
Our basement is moldy, this dehumidifier is a lifeguard! It does a good job of reducing humidity. It is also very quiet compared to other dehumidifiers we have. I think this is important! I have connected the hose so that it empties itself. Definitely recommend it to anyone with water problems.
Suitable for family basement
By 'Henna Smith', Reviewed on November 23, 2020
Love this product. Easy to use and good noise level. Surprised at the amount and speed of water is pumped out of the basement air. I drain the drain into the sink near the basement and run it 24/7. We have recommended this unit to a friend and will buy it again.
Good result
By 'Ihsan Healy', Reviewed on November 16, 2020
This dehumidifier is the best, easy to understand instructions, and easy to operate. In the cold weather, we had a lot of condensation inside the single-pane window of the back bedroom, and it dripped down and started to grow mold on the wooden window frames. Can't say how long it can last, but it looks very good and it has a 5-year warranty. We set it to 40% humidity and really pump out the water in the air. The bedroom window in the back window is dry. No condensation can be seen in the morning.
Great dehumidifier. It is strongly recommended for large spaces.
By 'Harmony Fitzgerald', Reviewed on November 09, 2020
I live in southeastern Michigan and I just bought a house with a large basement (>2000 square feet) and it has a mold problem. I borrowed a dehumidifier from my sister and it worked well, so I bought one myself. At first, I installed the dehumidifier, connected the drain hose, and discharged it into a sewage pump. I am satisfied with this matter-it keeps my 2,200 square foot basement always at 40%-45% humidity. When there is no dehumidifier, I find that the humidity is around 70%-75%, which greatly exacerbates the mold problem-you will smell a big difference. Excellent dehumidification effect, especially when draining to the hose.
Very reliable product
By 'Samira Donaldson', Reviewed on November 02, 2020
This dehumidifier does a great job of keeping the excess moisture in the basement to a minimum! Actually, when my pump failed during heavy rain, I had a small "flood" all night, but when I woke up, the water on the floor was completely dry (the dirt was left behind), and My machine is still running and undamaged.
By 'Robbie Curran', Reviewed on October 26, 2020
Our basement was damaged by water and the musty smell was really frustrating, so we bought this dehumidifier and it worked very well! I would say that we have a moderately sized cement basement, this product can indeed solve the problem. There is no more peculiar smell or moisture in the air!
Great for me
By 'Avni Mcdermott', Reviewed on October 19, 2020
This fall, I did an attractive project in the crawl space. My humidity level is close to 90% and I use this dehumidifier to reduce it to 50%. I discharged the hose into the sewage pump. I am happy to use this dehumidifier for the encapsulated grab space. I recommend.
Powerful dehumidifier at a reasonable price
By 'Emmy Taylor', Reviewed on October 12, 2020
I bought this machine in the newly renovated basement and put a lot of debris in the basement. It rains a lot this year. I am afraid that the smell of the basement will smell like rotten wood. I am also worried that the things I store in the basement will be damaged due to excessive moisture. So I decided to buy a dehumidifier. I compared many dehumidifiers and proceeded. After commenting, I finally chose to buy this machine. It really absorbs a lot of water. Very good product, love it!
Keep the basement area dry
By 'Ellena Dorsey', Reviewed on October 05, 2020
First of all, this dehumidifier looks so stylish and modern. I like its overall simple design. I bought this dehumidifier in the residential area in the basement of the house. The product has been used for a week after delivery. The unit works effectively. As a comparison, I have another dehumidifier of another brand with similar dimensions, and when the device is turned on at the same time, not much water is collected. The noise level is acceptable. Therefore, I will definitely use this equipment in a larger area and keep the old equipment in a smaller room.


Is the dehumidifier coated with epoxy?

Casey on March 09, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier has epoxy-coated coils. Thanks for your question!
What are the advantages of this ENERGY STAR dehumidifier?

Kobie on March 02, 2021

1 Answer

Answered by Alorair
Hello, since it is ENERGY STAR certified, this dehumidifier will quickly remove moisture from the air without increasing your water and electricity bills. Energy Star appliances are not only more beneficial to the environment, but compared with non-Energy Star appliances, their operating costs are also reduced by 30%. Thanks for your question!
Is the dehumidifier a plug-and-play device?

Jonah on February 23, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is a plug-and-play device, you do not need any technical knowledge to operate the device. Thanks for your question!
What is the power of this dehumidifier?

Chantal on February 08, 2021

1 Answer

Answered by Alorair
Hello, the power of the Sentinel HDi90 dehumidifier is 115V / 60 Hz. Thanks for your question!
What is the compressor type of this dehumidifier?

Kaycee on February 02, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a rotary compressor. Thanks for your question!
What is the evaporator type of this dehumidifier?

Fenton on January 26, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a rare earth alloy tube evaporator. Thanks for your question!
What type of filter is equipped with this dehumidifier?

Arnas on January 19, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a pre-filter (optional MERV-8 filter). Thanks for your question!
Do I need to hire a technician to install this dehumidifier?

Tarik on January 12, 2021

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is easy to install and set up. It offers a variety of installation options, all of which are easy and do not require you to hire a technician. This is a plug-and-play device and does not require any technical knowledge. Thanks for your question!
How can I store it when I am not using this unit?

Jevan on January 05, 2021

1 Answer

Answered by Alorair
Hello, when you are not using this machine, you can store it until you need it. These are the simple steps you need to follow: turn off the device and let it dry; wind the power cord; make sure the filter is covered; store the device in a clean and dry space. Thanks for your question!
Is the dehumidifier compatible with the HVAC system?

Jannah on December 29, 2020

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier can be connected to the existing HVAC system through a duct to dehumidify the whole house. Thanks for your question!

Related Products