Keystone KSTAD50B, a Energy-Star dehumidifier review

Published in Dehumidifiers on 4th December 2014

Image from Amazon

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

A good model to consider under this brand will the KSTAD50B, a 50-pint dehumidifier which replaces the previous KSTAD50A, and is also Energy-star certified.

This dehumidifier has received favourable reviews online on various sites. So in line with my aim of provided unbiased product reviews of green products, I have provided a review of the Keystone KSTAD50B.

Benefits of owning a Keystone KSTAD50B

Multiple settings in a clear LED display

The Keystone KSTAD50B comes with electronic controls with clear LED display for easy programming of settings by the user. The settings; Normal, Turbo allow one to select for the settings that best suit your environment be it a dank basement or a room with sensitive equipment.

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

Auto-defrost function

The auto-defrost function will allow the auto removal of frost that will build up on the evaporator coils. When frost builds up, the compressor will cycle off while the fan will continue to run until the frost disappears.

Easy to maintain and clean

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

Other useful designs

This dehumidifier comes with rolling caster wheels that allows for easy transportation when there is a requirement for installation in other rooms. The KSTAD50 also comes with a clean filter alert that will warn the owner when the filter clogs and a full bucket alert with automatic cut off to prevent overflowing.

Another useful function will be the auto-restart option that will saves your settings in the event of a power outage.

2014 Energy Star certified
Being an Energy Star certified dehumidifier, this means that this Keystone dehumidifier utilises 15% lesser energy to remove moisture as compared to a similar sized conventional unit. The KSTAD50B has the ability to remove up to 50 pints of moisture from the air per day for a 3000 square feet room.

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How does the Keystone KSTAD50B rate on popular websites?


144 customers at Amazon gave the Keystone KSTAD50B an average rating of 4.4/5.0. Out of 144 customers, 97 gave it a rating of 5.0/5.0.

Best Buy

10 customers at Best Buy gave the Keystone KSTAD50B an average rating of 4.8/5.0. Out of 10 customers, 8 gave it a rating of 5.0/5.0.

Home Depot

9 customers at Home Depot gave the Keystone KSTAD50B an average rating of 4.5/5.0. Out of 9 customers, 5 gave it a rating of 5.0/5.0. 


52 customers at Walmart gave the Keystone KSTAD50B an average rating of 4.6/5.0. Out of 52 customers, 36 gave it a rating of 5.0/5.0.

Customer Reviews on Keystone KSTAD50B

To ensure a well-rounded review on this Keystone dehumidifier, I have summarised the pros and cons from recent customer reviews.

The Pros 🙂

Good price; customers had mentioned that the KSTAD50B to be a good and affordable 50-pint dehumidifier that works,

Effectiveness in removing moisture; one customer has actually carried out a test and his result was that it can remove about 48 pints of water in 24 hours which was very close to the stipulated specifications, as mentioned by another customer the KSTAD50B was able to reduce the humidity in a room from 84% to 67% overnight on high speed,

Good design; this dehumidifier has a nice, compact design that has been mentioned by customers to be a good point. The filter is also located conveniently on the top for easy access without any fasteners or covers to remove before gaining access.

Quiet mode of operation; the Keystone KSTAD50B minimal operational noise was also a pro that was commonly mentioned by customers,

Ease of programming; easy programming of dehumidifying schedules was also a pro mentioned by customers who purchased this Keystone dehumidifier, 

Useful functions; functions like the auto-shut off at full tank capacity, auto-restart function which allows your settings to be saved in the event of a power outage are some mentioned useful included functions.   

The cons 🙁

Possibly unclear instructions; some customers had mentioned that the user manual not being very clear in their illustrations especially in the setting of the hose for the continuous draining option, however, there were positive feedback about the user manual especially in the water bucket removal when it was full,   

Design and material of the bucket; emptying of the water during a full bucket was also mentioned by the customers to be a difficult process, with its sides that flare out it will make spillage of water highly likely when emptying out the full bucket, however for this case a customer had mentioned that by following the instructions stated in the manual, spillage of water can be prevented,

Wrong sizing of the continuous hose adaptor; the in-built adapter set up has been mentioned by a customer to not be able to fit a standard garden house. It seems to be a bit smaller than the diameter of the hose however the suitable hose can be purchased readily from a hardware shop.   


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.  

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



 (Download the Specification Sheet for Keystone KSTAD50B here)

(Download the User Manual for Keystone KSTAD50B here)



(Published: 4th December 2014)

(Last updated: 14th March 2015)