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ALORAIR Basement/Crawlspace Dehumidifiers 198PPD (Saturation), 90 Pints (AHAM), 5 Years Warranty,Energy Star, Condensate Pump, Auto Defrosting, Epoxy Coating, Remote Control (optional)

Model : Sentinel HDi90

4.9 Average

$978.00 List Price: $1,550.00

Sentinel HDi90 dehumidifier is designed specifically for crawl spaces and basements. Low noise level, great COP,2.69/kWh, and huge capacity 90PPD at AHAM condition.
Draining Mode: Condensate Pump

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Crawlspaces or basements tend to have increased humidity levels. This is mainly because these spaces are either partially or completely underground. Once the moist air comes into these spaces, the moisture condenses on the walls or floor. This causes increased dampness.

Increased dampness creates the perfect environment for increased dust mites and the growth of mold and mildew. According to the American lung association, these are known allergens that can cause respiratory problems and asthma.

SAVES YOU MONEY: Since it is Energy-Star rated, this dehumidifier will quickly remove moisture from the air without running up your utility bill. Energy Star appliances are not just better for the environment, they also cost 30% less to operate compared to non-Energy Star appliances.

Key features

  • Quiet operation.
  • Energy-efficient - Super COP Energy Star Listed 2.69L/Kwh.
  • Compatible with Remote Control.  (Notice: sold separately).
  • Ducting options.
  • Automatic Defrosting System.
  • Corrosion protection.
  • Overheating protection.
  • Engineered for low-temperature operation.
  • Rare earth alloy Tube Evaporator.
  • Heavy-Duty Condensate Pump.


The sentinel HDi90 is horizontally configured, built with an advanced airflow design that makes this unit the best choice for dehumidification in tight spaces with airflow issues.

The sentinel HDi90 is uniquely built to be deployed in:

  • Residential spaces.
  • Restoration jobs.
  • Shop.
  • Storage facilities.
  • Garages.
  • Laboratories.
  • Offices
  • Crawlspaces.
  • Basements.

Capable of maintaining humidity levels controlled in any space below 2,600 sq. Ft.

All-purpose use

Capacity. - The sentinel HDi90 is able to remove:

  • 90 pint of water per day(115V(80ºF-60%)

 This is impressive especially because of its small size and low energy consumption.

Performance. – The sentinel HDi90 combines a number of features to effectively lower the humidity levels. These features include:

  • Continuous Pump drainage - sentinel HDi90 is equipped with a condensate pump that is able to pump the collected water out of the unit via a pipe. This water can be pump at a distance of over 5 meters.
  • Durably built - The sentinel HDi90 has a corrosion protection layer that protects the unit from the corrosive environment to which it will be deployed to.
  • Air filtration - The sentinel HDi90 has a washable filter that traps mold spores and other air impurities to improve the indoor air quality.
  • Silent operation - The sentinel HDi90 produces low noise levels while operational hence will not affect your comfort levels.
  • Defrosting system - The sentinel HDi90 has an Automatic defrosting system that increases the efficiency of the dehumidifier, especially in low temperatures.
  • Easy installation and set-up - The sentinel HDi90 allow a variety of installation option, all of which are easy and don’t require you to hire a technician. This is a plug and plays appliance with no technical knowledge needed.
  • Duct options – A duct can be added to the sentinel HDi90 to provide focused dehumidification or allow you to dehumidify space where the dehumidifier can fit or you can use the duct to connect the sentinel HDi90 to the existing HVAC system for whole-house dehumidification.
  • Remote control - The sentinel HDi90 allows you to remotely adjust the dehumidifier setting remotely. This makes it convenient to operate a dehumidifier in a tight space. (Sold separately)

Warranty – The sentinel HDi90 has an extended 5 years warranty. At Alorair we have designed and built the sentinel HDi90 dehumidifier to exceed the customer quality expectations. All sentinel HDi90 units are thoroughly tested and proven to be fully functional.

Support – All Alorair customers get to enjoy efficient user support via email, phone, or live chat. We are dedicated to helping all our customers with any challenges they may face while operating the sentinel HDi90.

The sentinel HDi90 has lots of unique features that all combine to efficiently and effectively control the humidity levels! invest in the sentinel HDi90 today!

Power 115V/60HZ
Current 5.56A
COP 2.69L/Kwh
Size For Up to 2,600 sq.ft.
Filter Clean Air Filter,HEPA,Merve-8
Air flow 210 CFM,350 CMH
Sound Pressure Level <58DBA
Refrigerant R410A
Feet Adjustable Feet
Draining Condensate Pump
Defrosting Control System Automatic Defrosting
Functioning Temperature Range 33.8~104℉
Functioning Humidity Range 35~90%
Capacity115V(80ºF-60%) 90Pints
Weight 85.90Ibs
Dim(LxWxH) 23.2x15.2x17.7in
Loading quantity 20”:180Sets/40”:412Sets/40”HQ :515Sets

Ratings Summary

97% Recommend this product of 76 responses

76 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN % Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Total: 76 Reviews
Efficient, Quiet, Easy to Operate.
By 'Javan Vickers ', Reviewed on 2021-04-15 10:59:40
I am impressed with how quiet and efficient this unit is. I have it in a basement that's approximately 2000 square feet, and it has made a noticeable difference in keeping the space drier. The air had a certain flavor to it before because the moisture that would seep in through the stone foundation would linger for an extended period. I don't hear the unit nor has it made a noticeable impact on my electric bill, and I have it running around the clock. It senses the level of humidity in the basement and automatically increases or decreases the fan speed accordingly. I am very pleased with my purchase.
Humidity significantly reduced
By 'Zak Pratt ', Reviewed on 2021-03-29 16:13:45
Our thermostats for upstairs and downstairs have been warning us that the humidity in the house was getting above 70%. So we decided to buy a dehumidifier. Noise level, Not much to complain about here. The sound level is what you would expect. I compared the readings of my white noise machine on low and they come up with almost identical readings. Power consumption, in short, I feel that this will be saving us money. If you're looking for a dehumidifier for a large area this will do the trick! Our house is 4000sqft and this sits in the middle of the 2nd floor. The humidity has stayed in check on both upstairs and downstairs thermostats since we started using the device. The combination of price and features made this a good deal to me. Now that I've seen the performance I think it was a great deal!
Quiet and efficient unit
By 'Farrell Franks ', Reviewed on 2021-03-15 15:57:56
I need to replace the old dehumidifier that I bought 3 years ago. After a lot of research, I bought this model. The reviews are great and fully functional. Two weeks after installation, I couldn't believe how much moisture was absorbed in the basement. This machine is very quiet, and the attached hose is easy to drain. I am very satisfied with this product. highly recommended.
Excellent dehumidifier
By 'Idris Joyner ', Reviewed on 2021-03-08 17:01:49
I like this dehumidifier because it is easy to set up and quiet to operate. This product is very suitable for absorbing moisture from the air. In fact, it can control the humidity between 45% and 50% to maintain the comfort of the house. In the past, we have been fighting the musty/humid odor, but this has eliminated the odor. It is more energy-efficient than our previous dehumidifiers, and deserves to be an Energy Star certified product.
Compact and powerful! Finish the work!
By 'Kiefer Arnold ', Reviewed on 2021-03-01 16:29:00
We are very satisfied with the product. The transportation is done in time​​ and is well packed. This unit is very effective and can dehumidify my basement, which is a finished 2400 square foot basement. I have been running for 3 months and the drain hose is great, draining it correctly into the pump, completely dried our damp musty basement without any problems. I highly recommend this product.
Live up to expectations
By 'Myles Lyons ', Reviewed on 2021-02-22 11:22:25
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 2021-02-07 11:30:23
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 2021-02-01 13:54:58
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 2021-01-25 14:35:41
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 2021-01-18 11:59:35
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.


Questions & Answers
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 much water you can absorb each day?

Lucie on 2021-03-29 15:45:32

1 Answer

Answered by Alorair
90 pint of water per day(115V(80ºF-60%)

1 Answer

Answered by Alorair
Hello, please replace or clean the filter every 2-3 months. Thanks for your question!
Is the dehumidifier coated with epoxy?

Casey on 2021-03-09 15:19:26

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier has epoxy-coated coils. Thanks for your question!

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 2021-02-23 14:26:31

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 2021-02-08 15:11:40

1 Answer

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

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a rotary compressor. Thanks for your question!

1 Answer

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

1 Answer

Answered by Alorair
Hello, the Sentinel HDi90 dehumidifier is equipped with a pre-filter (optional MERV-8 filter). Thanks for your question!

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