Keystone KSTAD50B, a Energy-Star dehumidifier review

Last updated on April 26th, 2024 at 01:06 pm

Keystone KSTAD50B
Image from Amazon

Besides a Frigidaire dehumidifier, another good brand to consider will be a Keystone dehumidifier.

A good model worth considering will the Energy-Star certified KSTAD50B, a 50-pint dehumidifier replacing the KSTAD50A.

This dehumidifier has received favourable reviews online on various sites. So in line with my aim, here is my unbiased product review for Keystone KSTAD50B.

Benefits of Owning a Keystone KSTAD50B

Clear LED display with multiple settings

The Keystone KSTAD50B possessed a clear LED display with in-built electronic controls for easy programming of settings. Two fan speed settings; Normal, Turbo allow you the flexibility to select settings best suited for your environment ranging from a dank basement to a room with sensitive equipment.

The incorporated 24-hour timer allow the setting of overnight programs to facilitate 24/7 moisture removal.

Auto-defrost function

Auto-defrost function allow the automatic removal of built-up frost on the evaporator coils. Upon the build-up of frost, the compressor will cycle off while the fan will continue to run until the frost disappears.

Easy to Maintain and Clean

This Keystone dehumidifier possess a removable, dust filter that is easy to clean. The bucket also possesses a transparent water level indicator allowing easy detection of water level. There is also the continuous draining option available (hose not included) that prevents overflowing of a full bucket.

Other useful designs

The 4 rolling caster wheels allows easy transportation of KSTAD70B for installation in other rooms. Other in-built useful functions include: clean filter alert function that will warn the owner of a clogging filter; full bucket alert with automatic cut off to prevent overflowing; auto-restart option that will save your settings in the event of a power outage.

2014 Energy Star certified

This Keystone dehumidifier utilises 15% lesser energy, compared to a similar sized conventional unit, for removal of moisture.

Summary of Specifications for Keystone KSTAD50B

Colour White
Dimensions Height = 23.2 in.
Width = 15.4 in.
Depth = 10.8 in.
Weight = 36.3 pounds
Fan Speed2
Power TypeElectric
Installation TypeFree-Standing
Voltage Rating115 V/4.7 Amps
Capacity5150 BTU/h
Safety Certification UI091037656148
Energy Star CertifiedYes
Energy Factor (L/kWh)1.85

How does the Keystone KSTAD50B rate on popular websites?


3066 customers at Amazon gave it an average rating of 4.4/5.0. Out of 3066 customers, 2015 customers gave it the maximum rating of 5.0/5.0.

Home Depot

924 customers at Home Depot gave it an average rating of 4.4/5.0. Out of 924 customers, 534 customers gave it the maximum rating of 5.0/5.0. 


2 customers at Lowe’s gave it an average rating of 5.0/5.0. Out of 2 customers, all gave it the maximum rating of 5.0/5.0. 


285 customers at Walmart gave it an average rating of 4.3/5.0. Out of 285 customers, 182 customers gave it the maximum rating of 5.0/5.0.

Customer Reviews on Keystone KSTAD50B

I have read reviews for the Keystone KSTAD79B from customers and summarised them below.

The Pros

One positive feedback raised is its price; customers have mentioned that the KSTAD50B is a good and affordable 50-pint dehumidifier. Another good point mentioned is its nice, compact design that includes the filter that is located conveniently on the top without any removal of fasteners or covers to get access.

The ease of programming a dehumidifying schedule via the software interface is also an  advantage.

Effectiveness in removing moisture; result from a test carried out by a customer show that the KSTAD50B can remove about 48 pints of water in 24 hours. This result is very close to the stipulated specifications. Another customer mentioned the KSTAD50B was able to reduce the humidity in a room from 84% to 67% overnight on high speed. Minimal operational noise generated by the Keystone KSTAD50B is also commonly mentioned.

Additional functions like the auto-shut (full tank capacity), in-built clean filter alert and auto-restart option were mentioned by customers to be desirable aspects that they look for in a dehumidifier.

The Cons

Design and material of the bucket is a mentioned con; emptying out a full bucket is mentioned to be a difficult process due to the sides that flare out. This will make spillage of water a likely affair. However, in a related comment, a customer has mentioned that this can be prevented by following the steps in the instruction manual. 

Unclear illustrations in the user manual, especially for the installation of the hose for the continuous draining option, is also mentioned. Wrong sizing of the provided continuous hose adaptor is not suitable to fit a standard garden house. It is mentioned to be smaller though a suitable hose can be purchased readily from a hardware shop.

Product guide and information


The Keystone KSTAD50B comes with a full one-year warranty for the 1st year which include parts and labor. For the subsequent years until the 5th year, the warranty is limited to repairing and replacing of parts in the sealed refrigeration system which include compressor, condenser, evaporator and tubing.  


Specification sheet (PDF)
User manual (PDF)

Best Deals for Keystone KSTAD50B

During my research for this review, I also compared prizes among online websites that carry this dehumidifier as part of its product range. I found out that Amazon consistently offers a lower prize for this dehumidifier.

So to enjoy the best prizes for this dehumidifier, click on this link: Best Deals for Keystone KSTAD50B


  • Wilson Yeo

    I am the admin of Green Energy Helps and I possess a keen interest in how green energy and leading a green lifestyle can help to reduce our individual carbon footprints. I will be providing information about green energy and lifestyle tips with unbiased reviews on green products for your consideration. Note: This website uses affiliate links which may earn a commission for purchases made at no additional cost to you.

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