Keystone KSTAD504D Review

Keystone 50 Pint Dehumidifier with Electronic Controls


  • Removes up to 50-pints of moisture from the air each day.
  • Designed to dehumidify an area up to 4500 square feet.
  • 24-hours timer and electronic controls with LED display.
  • Water tank with a capacity of 1.6 gallons and transparent water level indicators.
  • Four durable and omnidirectional wheels for easy movement.
  • Continuous draining option 
  • Normal, turbo, and auto defrost settings are available.
  • Automatic restart during a power outage.
  • Automatic shut off on full bucket alert.

An Overview

The Keystone KSTAD504D is an efficient and reliable dehumidifier specifically designed for large spaced areas with extra humidity and moisture issues.

This dehumidifier works quickly to absorb moisture out from an area of 4,500 square feet space to improve the air quality so that you can feel more comfortable in breathing.

In this video Ameripino give detail review of Keystone dehumidifier 50 Pint.

What Features make the 50-Pint Keystone KSTAD504D Energy Star Dehumidifier worth buying?

Top features of Keystone KSTAD504D

Eliminates excess moisture

This Keystone dehumidifier removes 50-pints of moisture efficiently from the air per day. This dehumidifier works very effectively and quickly absorbs the water from a humid area of almost 4,500 per square feet so that you can breathe more easily without having any lousy odor of mildew and mold in the air.


On this dehumidifier, you can set your ideal humidity range according to your need, anywhere from 35% to 85%. You will simply adjust the perfect setting by using the electronic controls with an LED display. Then, let the dehumidifier do the rest of the work to control the humidity levels and make a moisture-free environment for you.


This Keystone portable dehumidifier has four durable and omnidirectional caster wheels to make it easy for you to place it in various locations of your home by just rolling the wheels. You can use it in any space of your home or apartment, for example, bedroom, basement, garage, bathroom, or anywhere else, so that you can breathe in clean and moisture-free air again!

Multiple modes

With this dehumidifier, you can choose among different modes that fit best according to your need. 

Normal Mode: This mode can be used during regular days. You can just simply adjust the ideal humidity level using the electronic controls. This Keystone dehumidifier will cycle on and off as required to keep the air healthy and comfortable for you.

Turbo Mode: For extra humid days like rainy days in winter on hot summer, sweaty days, or the large spaces with excess dampness and severe moisture issues, you can turn on the turbo mode. This mode will use the highest fan speed, which is required to remove moisture immediately.

Continuous mode: Lastly, we have the constant dehumidification mode that you can use for a 24hours-cycle regardless of what the current humidity levels. This continuous mode is basically used in areas with severe humid conditions. 

Additional Features

Continuous drain option 

For extreme humid conditions, you can use the continuous mode of a dehumidifier with a continuous draining option which is available and can be used with a low-level drain and a standard garden hose to keep yourself away from the burden of emptying the water bucket.

Energy Star Certified Dehumidifier

This Keystone is an energy star-certified dehumidifier that can effectively reduce moisture and maintain a perfect level of dryer air which can help you feel more relaxed and comfortable without consuming more power. This dehumidifier will put less burden on you to pay heavy bills with minimal energy consumption to absorb moisture in medium-spaced rooms.

Easy to Wash Filters

A sleek design and powerful performance dehumidifier make it easy for you to clean the filters at home. These filters need no extra charged services from outdoor. Instead, they are washable and can be washed easily to make the air you breathe fresh and crisp.

Excellent bucket design with water level indicators

In this dehumidifier, we have a completely clear, more convenient bucket with a capacity of 1.6 gallons which gives you clear and easy visibility to check the water level. 

With its unique transparent bucket design, you can quickly see how close the internal water bucket is being full in case if you choose to empty the bucket manually when it’s full.

Automatic Shutoff and Auto restart options

This dehumidifier will automatically shut off when the water collecting bucket is full to prevent any kind of spills in case if you forget to empty it.

In case of a power outage occurs, it turns back on from the last settings once the power is restored.

Reap many Advantages

This dehumidifier protects your home from mold, mildew, and dangerous allergies and also keeps it safe from any kind of damage during storms, and wet weather. Whatever your purpose is to use it, this dehumidifier will significantly help you absorb extra moisture from your surroundings!


We have chosen this dehumidifier because of its impressive features, good performance to remove the moisture effectively, and less energy consumption.

What makes it a good buy?

  • Terrific energy efficiency because of its high humidity removal rate.
  • It is made with suitable quality materials.
  • Defrost mode to help the coils prevent from freezing.
  • Excellent performance in removing moisture up to 50-pints from the air.
  • 24-hours timer and electronic controls with LED display.
  • Water tank with a capacity of 1.6 gallons and transparent water level indicators.
  • Four durable and omnidirectional wheels for easy movement.
  • Continuous draining option 

What are the shortcomings we are disappointed with?

  • No built-in pump
  • Only has a 1-year warranty
  • The drain hose is not included

Customers Reviews

Keystone KSTAD504D is a unique dehumidifier that can drop the damp areas to less than 50%humidity level. It helps to remove wood rot, insect infestations, and mildew that can damage expensive home products. This dehumidifier has received several excellent comments from the customers. We are sharing some of them over here.

One more client bought this dehumidifier because of his basement’s 80% stickiness level. He utilized to have a sump pump and a french deplete framework, but despite that, he had a part of dampness there. The fundamental reason for buying this dehumidifier was so to maintain a strategic distance from buildup and form development on all over everything. After 24hours of nonstop operation, the mugginess was 50% in extent, and the cellar was exceptionally comfortable to breathe in.

Another client concluded that this is often an excellent dehumidifier for cellars with a large area. Channels of this dehumidifier can be washed out using water, and there’s no got to purchase modern channels. He has to take note of a significant distinction within the drier discussion he has presented in his cellar. As it were a negative point he examined, it is essentially louder when set on turbo mode. 


1- What months can we use a dehumidifier?

Dehumidifiers are used in highly humid weather when the moisture is in severe amounts. You can mainly use the dehumidifier in rainy days of winter, extra hot and sweaty days of summer, and early fall. When the climate and your home tend to have a very high level of humidity, so you will need a dehumidifier in those instances.

2- When should you not use a dehumidifier?

Mainly, the dehumidifiers should not be used at a temperature which is below 60 degrees because the moisture is completely removed from the indoor spaced air, and it can freeze the coils when condenses, which can be very damaging for your dehumidifier.

3- Should the windows be opened when using a dehumidifier?

Dehumidifiers can work more efficiently when the windows are closed because by opening the windows, you allow the outside moisture to come in, and because of which the humid level will remain almost the same.


This Keystone dehumidifier is an excellent moisture control dehumidifier that fulfills the basic need of dehumidification if you live in a very humid area. This dehumidifier is just the right choice for the solution to your problem. It is a perfect fit to absorb moisture quickly and effectively using minimal energy consumption for medium to large rooms. 

It is designed by keeping style and convenience in mind to remove a minimum of 50-pints of moisture from the air providing you fresh and healthy odorless environment. This dehumidifier has convenient built-in wheels, which are an omnidirectional, sleek and clean look to add comfort and beauty to your surrounding.

This portable dehumidifier has a turbo mode feature that allows you to increase fan speed for quick results in days of severe humid conditions. It is also an energy star-certified dehumidifier that will consume significantly less power and is an excellent choice to purchase.

Leave a Comment