Keystone 50 Pint Dehumidifier with Pump Review: A No-Frills Pump Unit
Keystone's 50 pint with pump covers up to 4,500 sq ft and is ENERGY STAR certified.
By Daniel Brooks
Updated October 24, 2026
The Keystone 50 Pint Dehumidifier with Pump adds a built-in pump to a straightforward 4,500 sq ft unit, one of the simpler pump portable compressor dehumidifiers we cover.
Our Verdict
The Keystone is a no-frills pump dehumidifier. It removes up to 50 pints a day, covers up to 4,500 sq ft, auto defrosts and auto restarts, and it is ENERGY STAR certified.
It has no Wi-Fi and Keystone lists 55dB, which is on the louder side.
Keystone 50 Pint Dehumidifier with Pump
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | Keystone |
| Model | 50 Pint with Pump |
| Capacity | 50 pints per day |
| Coverage | Up to 4,500 sq ft |
| Drainage | Built-in pump |
| Features | Auto defrost, auto restart |
| Noise Level | 55 dB |
| Certification | ENERGY STAR |
Pump and Setup
The built-in pump drains water without a bucket. You can also connect a standard garden hose to a low drain.
Normal and turbo settings sit on the LED panel.
Reliability Features
Auto defrost protects the coils in cool spaces, and auto restart recovers after a power cut.
The unit alerts you when the bucket is full.
Placement Tips
Set the dehumidifier in the dampest part of the space, a few inches from walls and furniture so air can flow in and out. Close windows and doors while it runs so it is not drying the outdoors.
In a basement, a central spot works better than a corner, and a level floor keeps the bucket and pump working properly.
Running Costs and Care
Set the humidistat to around 45% to 50% so the compressor cycles off once the space is dry, which keeps power use down.
Rinse the filter every couple of weeks during heavy use, and check the bucket and hose for buildup. A clean unit removes more water.
How It Compares
Against Midea’s 50 pint with pump, the Keystone is simpler, while the Midea adds Wi-Fi.
Against GE’s 50 pint with pump, the Keystone costs a little more, while the GE lists a 15 ft lift.
Pros and Cons
| Pros | Cons |
|---|---|
| Built-in pump | No Wi-Fi |
| Covers up to 4,500 sq ft | Rated at 55 dB |
| Auto defrost | Pump lift not stated |
| Auto restart | Basic controls |
| ENERGY STAR certified | Heavy at about 41 pounds |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Basements without a drain | Smart home users |
| Anyone who wants simple controls | Bedrooms |
| Cool basements | Noise-sensitive spaces |
| Large rooms | Tight budgets |
For more options, see our picks for the best dehumidifiers with pump and the best dehumidifiers under 300 dollars.
To see how it ranks against similar models, read our best dehumidifiers with pump.
Final Verdict
The Keystone 50 Pint Dehumidifier with Pump is a simple, efficient pump dehumidifier. You can check the current price and details for the Keystone 50 Pint Dehumidifier with Pump.
Frequently Asked Questions
Does the Keystone have a pump?
Yes, built in.
What area does it cover?
Up to 4,500 sq ft.
How loud is it?
Keystone lists 55dB.
Is it Energy Star?
Yes.
Does it auto restart?
Yes.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.