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Features
- White Rodgers 21D28-6 Features
- Evaporative Cooler Control System (Includes 1D51W-632 Wall T-Stat and 8A18Z-2 Transformer Relay Control Panel)
- Horizontal Mount
- Switch: Off-Cool-Vent
- Fan Switch: Hi-Lo
This Evaporative Cooler Control has a rain-proof enclosure and can be used with either 120 VAC or 240 VAC systems. It was designed for use with White-Rodgers 1F51-619, 1F51W-619, or 1D51W-632 Thermostats to provide automatic temperature and ventilation control and remote fan speed selection of an evaporative cooler with 2-speed fan. The pump relay is automatically operated to allow wetting of cooler pads before starting fan.
Specifications
21D28-6

Overview
Product Category
Thermostats and Controls
UPC
786710532184
General Information
Type
Thermostat
Product Category
Thermostats and Controls
Programmable
No
Power Source
Hardwire
Internet Connectivity
No
Warranty Information
Warranty
Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Reviews
(3)
White Rodgers 21D28-6 Reviews & Ratings

Thermostat Controls
By Leonard M
Tempe, Arizona
Purchased 11/01/2021 |
Review Posted 11/23/2021
I bought this 15 years ago an it started to act up. So I bought this unit and just love it. before you could only set it to cool an you hand to turn it off once it was cool enough. Now this unit will let you set a lever an it will keep working till it gets to your setting. Then shut down an wait for the house to warm back up with no intervention by me! Like the new unit it uses a contact to switch on an off, instead of a mercury float switch.
Leonard M Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Price, Reliable, Id Buy It Again
Cons:
Position of KOs, would like a 3 on the bottom

Exact Replacement for my Defective Unit.
By Richard T.
Arizona
Purchased 07/03/2017 |
Review Posted 10/08/2017
I had the control box and thermostat changed out in less than an hour. My cooler works as good as it did when it was new.
Richard T. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
I'd Buy It Again

Thermostat control box
By Sherri
IL
Purchased 03/19/2014 |
Review Posted 04/03/2014
Wonderful product, easy to install!
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
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Manuals
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White Rodgers 21D28-6 Evaporative Cooling Thermostat & Control Box


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