Order Tracking | (888) 990 - 7469 | Sign in/Sign up

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

$1,047.00 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

Buy on Amazon AlorAir.com 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 Amazon.com. Additionally, AlorAir.com participates in various other affiliate programs, and we sometimes get a commission through purchases made through our links.


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

98% Recommend this product of 86 responses

86 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: 86 Reviews
It's rock-solid reliability.
By 'Aidan James ', Reviewed on 2021-09-23 10:48:13
It installed this in my crawl space to keep humidity in check in mid-January. It moves a lot of air to get the moisture down in a small confined space in no time. It's also not too loud; even though it is installed very close to a bedroom, it's just barely audible from there. It stopped switching on when the humidity got past its setpoint about a month later. It's rock-solid reliability.
Love it!
By 'Sophie Jo ', Reviewed on 2021-09-23 10:35:08
Heavy item arrived well packaged. I installed it in our crawl space per instructions. It immediately began lowering humidity there to my setting of 55%. The most challenging part was leveling due to the uneven floor, but that is crucial for proper long-term running. It is quiet and difficult to hear from the bedroom above where it is installed. It seems easy to maintain, which I plan to do so per the instructions.
Satisfied with this product!
By 'Aro Keto ', Reviewed on 2021-09-17 10:37:08
Firstly I’ll say that AlorAir customer service is excellent. I contacted them about getting a 220VAC unit. They helped me order it correctly. When there was a delay in delivery due to the availability of 220V compressors, they informed me, gave me an accurate fulfillment date, and provided some compensation for the delay. It’s only been installed for about a week. And I only yesterday blocked off all of my crawl space vents. It’s been raining for days here. But even with the crawl space vents open, the humidity level in the space dropped from above 75% to about 60%. Since I blocked the ducts yesterday, it’s down to 50% and dropping. And I still have work to do to isolate better my crawl space (the plastic that’s down on the ground is aged and has significant gaps, especially around the sides). So far I’m thoroughly satisfied with this product.
By 'Andrew ', Reviewed on 2021-09-09 10:07:11
This Sentinel HDi90 dehumidifier did an amazing job! We live in a very humid place. The room never felt particularly wet, but it does feel warmer now. It's so easy to use. A very low unobtrusive buzz.
Good product and good service!
By 'Tom Jones ', Reviewed on 2021-08-25 16:22:09
I did a lot of research before I bought the AlorAir Sentinel HDi90. I wanted the following: 1. small size to fit through the crawlspace door under our cabin. 2. A unit that had remote monitoring capability. 3. A unit with high capacity. 4. A dehumidifier that appeared to be well built and Energy Star rated, and lastly. 5. A good warranty. The AlorAir unit has a five-year warranty. While reviewing possible machines to buy, I contacted AlorAir by email with several questions about the HDi90 and, within 24 hours, had the answers I was looking for it. Good product and good service!
best dehumidifier
By 'Alice Walker ', Reviewed on 2021-08-10 16:25:44
Since I've been working from home after the pandemic outbreak, my basement has become my home office. I haven't been in a basement long enough to notice that it smells, and is a little damp. Due to I need to spend a long time working in the basement, I decided to found a way to solve this problem. This dehumidifier is hands-down the best thing I've bought this year. It removes moisture and odors from the air and provides a good working environment for me. More importantly, it is relatively quiet and does not affect my work at all. Really satisfied with it!
By 'Maisie Jones ', Reviewed on 2021-08-05 10:33:47
I was looking for a dehumidifier for my basement. The weather in the summer of the south is humid. I always prefer to "overdo" it than "Underdo" it, even though spending money than what I expect. I've had it running for 3 hours, and it works perfectly. My basement dried very quickly, and it has no musty smell. How powerful capacity the dehumidifier is! And this dehumidifier can collect 90 pints of water per day (115V(80ºF-60%)). I strongly suggest picking this one up.
By 'Xander Green ', Reviewed on 2021-07-30 08:45:27
It may be one of the best dehumidifiers I have ever had. This one that I have purchased is amazing. It has a slight hum to it which is very soothing. I love that it comes with a drainage hose, and I love the fact that it's pretty lightweight and easy to move. I highly recommend it. We put the dehumidifier in the center of our house because our home for some reason collects lots of moisture. It is easy to use, and I highly recommend it.
Great product
By 'Rose Ramsay ', Reviewed on 2021-07-07 09:13:27
I am really satisfied with the function of the machine, especially these three features: it is small in size and weighs less, compatible with the HVAC system, and can be controlled remotely. It's a really good dehumidifier that you won't want to miss out it.
Amazing product
By 'Abenta Colin ', Reviewed on 2021-06-28 19:55:05
This machine is amazing! Took out a huge amount of water from our room. We run for 10 hours and the result is unbelievable. Our room becomes comfortable and fresher than before. No more wet smell, no more wet air, and no more condensation on the windows the next morning. Also very easy to operate.


Questions & Answers
Is this an automatic defrost system?

Bertram on 2021-09-09 10:08:28

1 Answer

Answered by Alorair
That's right
Answered by Alorair
Hi, Brody. The unit will still work without the controller.
Can the unit work at a low temperature?

Cameron on 2021-07-28 10:02:35

1 Answer

Answered by Alorair
Hi Cameron, this unit is engineered for low-temperature operation.
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.
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.
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!

Get More Detail