AlorAir 120 PPD Commercial Dehumidifier, with Drain Hose for Crawl Spaces, Basements, Industry Water Damage Unit, cETL Listed, Compact, Portable, Auto Defrost, Memory Starting, 5 Years Warranty

Model : AlorAir® Sentinel HD55 (gold)

4.9 Average

$648.66 List Price: $850.00


This AlorAir Commercial Dehumidifier 120 PPD won't let you down when it comes to staying dry. And it's perfect for brightening up dark spaces. Most importantly, it has the same quality as the star product (HD55 white) at a reasonable price.

Highlights: 5 Years Warranty/ MERV-8 Filter/ Automatic Defrost/ cETL certified/ Optional Remote Control

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Product Overview

AlorAir Sentinel HD55 Conventional Dehumidifier (Yellow)
This particular unit is considered one of the most chosen types of dehumidifiers for basements and crawl spaces. It is designed to effectively extract all excess moisture from the air to make it inhospitable for harmful entities such as mosquitoes to thrive and bring harm to your family. Moreover, by drying your chosen area, you can be sure to protect your valuables from being destructed by molds.

· Ultra-compact design with super performance
· Adjustable foot pad and portable handle to transport and install easily
· MERV-8 filter to protect internal components from damage from dust and other particles
· 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%
· Auto restart to remember the settings in case of power failure
· Automatic diagnosis system to get troubleshooting tips through error codes
· Gravity drainage for no need to check the tank regularly
· 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




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(115v/60Hz) 4.1 A
COP(115v/60Hz) 2.4 L/Kwh
Size For Up to 1,300 Sq.Ft.
Filter MERV-8 Filter
Air flow 130 CFM,230 CMH
Sound Pressure Level <52 dBA
Refrigerant R410A
Draining Gravity Draining
Functioning Humidity Range: 36%-90%
Functioning perature Range 33.8-104℉
Weight 44 lbs (20 kg)
Capacity115V(80ºF-60%)) 55 PPD
Dim(LxWxH) 19.2X12.2X13.3 in
Shipping Dim(LxWxH) 22.3x16.6x16.4 in
Loading Quantity 20': 260 Sets; 40': 565 Sets; 40'HQ: 678 Sets

AlorAir Sentinel HD55 Conventional Dehumidifier (in Gold)
You and your family always deserve the best. Here at AlorAir, we take into consideration the most suitable products for our consumers. This includes creating dehumidifiers that are proven to work flawlessly without incurring high energy consumption. This makes the AlorAir Sentinel HD55 Conventional Dehumidifier very suitable for home basements and crawl spaces.



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 Sentinel HD55 Crawlspace 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/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

99% of customers recommend this item

36 Ratings
4.9 Average
5 Stars
500% Complete
4 Stars
400% Complete
3 Stars
NAN% Complete
2 Stars
NAN% Complete
1 Stars
NAN% Complete
Great Customer Service

From the Amazon

By 'Mommy', Reviewed on April 07, 2023
We bought this unit for our crawl space in SC. For the first few months, all seemed well and we were very pleased with the performance of the unit but something changed about 6 mos in. The unit started freezing over. Customer service was very helpful and responsive. They checked the basics - level install, drain pipe clear & up from drain, clean filters, etc. But no luck. They sent a replacement part but that didnot work. Each time of froze over you had to let it the for a couple of days since it was winter. They are now sending us a replacement unit. I will update the review of this problem is a trend but I think it will all go well and in appreciate the way the company backs their product. Refreshing these days.
Good product

From the Amazon

By 'S. Howard', Reviewed on April 02, 2023
So fat it is working great in our crawl space. Easy to set up.
Effective but filters are expensive

From the Amazon

By 'Digital Denizen', Reviewed on February 24, 2023
Uses 348 watts while running normally and 135kWh a month. Company nearly doubled price of filters after I purchased so I will be finding a cheaper 3rd party supplier. Should have been a washable filter. Slung my unit from floor joists in crawlspace to get drop for gravity drainage. If using a condensate pump get one that can cut power to dehumidifier if pump fails to avoid flooding. Can hear and feel faint vibrations on patch of floor just above but only barefoot standing still.
Well made and practical
By 'Jenny', Reviewed on August 12, 2022
The unit comes well packaged, a box within a box - so little chance of getting damaged. The instructions say to wait 2 hours it unit may not have remained straight, but I would recommend waiting overnight, once you have the unit placed as you want. With this unit, I can place it in one of the utility rooms and duct it back to the main room. This allows us to enjoy the basement without having a dehumidifier running in it. Even though the unit is fairly quiet, it is even quieter when it is in the next room. And when we leave for extended times, we can just leave the utility door open.
This is a compact crawlspace dehumidifier
By 'Christy T', Reviewed on August 06, 2022
I was looking for a crawlspace dehumidifier and purchased one of these units. This is a compact, high-powered crawlspace dehumidifier, and it is doing the job just great. The construction of the unit is very strong, and every part seems to be very well-built. So far, so good I’m happy with this machine!
Works well!
By 'Michaelia', Reviewed on December 09, 2021
I purchased the amazon protection with this since it had so many reviews talking about how it broke after a year or two. I have only had it about two months but connected it to my crawlspace via the vent, and so far, it has taken the humidity down efficiently. I will install a couple of fans down there to see if I can get the better circulation of the dry air, but this is already a considerable improvement. It has not increased my power bill by any noticeable amount. On the plus side, the space you need is around the machine, not necessarily above or below it, so it's OK to fit in shorter crawl spaces and sit nicely on a shelf.
Good quality and value from the price
By 'Ethel', Reviewed on November 26, 2021
This is a well-built compact dehumidifier that is powerful enough to remove moisture from basements and crawl space. It ships with a MERV-8 filter. It is a piece of robust equipment, it works very well, and the energy consumption is not high. It is very well developed, and good quality and value from the price.
By 'Paula', Reviewed on November 25, 2021
OH my goodness. This dehumidifier looks sleek and works great! It is straightforward to use. The most accessible setting is just to plug it in and walk away. Very sturdy. For people who want it to run continuously, there is a setting where you can use a drain hose. You can also adjust the amount of humidity you want in the air. It's a very quiet and attractive unit. For the first spring in 18 years, my 120-year-old house doesn't smell musty when it rains.
Glad to have this unit!
By 'Tim', Reviewed on November 24, 2021
Recently received the new AlorAir Dehumidifier. The unit works great. It does what it is designed to do, and it was easy to set up. I used this dehumidifier on a new residential construction job site. Worked well to keep the home's humidity level in check during construction. I'm glad we added it to our equipment inventory.
By 'Lambert', Reviewed on November 23, 2021
Excellent for large spaces like a basement! This is a compact item, so be very careful when you take it from one place to another, especially in a basement. I assume that there is a need to go on the steps. It comes with two convenient handles to make it easier and safer to move around, in fact, comfy to hold, mushy in my opinion, the device is simple to get to work and covers a vast area!


Is there a parts list for the "HD55 Gold" that I can download, and if so what is the link?

Larry on February 08, 2022

1 Answer

Answered by Alorair
The parts list is in the user documentation. Click this link:
Hello, should the inlet be parallel to the wall or airflow parallel to the wall? It is in a crawlspace.

Hale on December 09, 2021

1 Answer

Answered by Alorair
No, neither the inlet/outlet should be parallel to the wall. The inlet should not be facing the wall. If it is facing the wall, it will not dehumidify efficiently.
Can I install the crawl space dehumidifier in the attic?

Blanche on November 26, 2021

1 Answer

Answered by Alorair
Yes, you can, and the duct is available for this dehumidifier.
Which filter is used for the HD55 dehumidifier, and how long need to replace it?

Hilary on November 25, 2021

1 Answer

Answered by Alorair
17.2" x 8.8" x 0.4" - This needs to be replaced every 3-6 months depending on the air quality.
May I ask where the dehumidifier is suitable?

Queena on November 04, 2021

1 Answer

Answered by Alorair
This dehumidifier fits any crawl spaces, basements, warehouses, offices, factories, shops, and storage areas.
How many pints of water are removed per day at aham?

Faithe on November 03, 2021

1 Answer

Answered by Alorair
55 pints per day at aham, and 120 pints at saturation.
Can this dehumidifier work automatically?

Bowen on November 02, 2021

1 Answer

Answered by Alorair
It has a humidistat that allows you to set it at your desired setpoint, and this will turn on and off automatically.
How much will power bills add a month if I install this dehumidifier?

Dennis Nathaniei on November 01, 2021

1 Answer

Answered by Alorair
Sorry, we can't give you an accurate answer. It's up to the condition you use, but it's an energy star dehumidifier, don't worry about the payment for power. Here are some relevant data that you can reference: 2.4 L/kWh 4.1 A

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