dock de-icer thermostat Weatherproof line voltage thermostats in freeze settings

For those overseeing marina operations or managing private docks during the cold months, ensuring an ice-free environment is crucial. Our NEMA 4X weatherproof dock de-icer thermostat is specially designed for such challenging outdoor conditions, making it a vital component of any de-icing system. To purchase, click here.

How Our Thermostats Enhance De-icing Efforts

These robust thermostats play a key role in preventing water bodies like ponds, lakes, and docks from freezing over. By measuring air temperature, our thermostat controllers can automatically activate a de-icer when temperatures drop below a predetermined threshold (ranging from 0°F to 80°F). This functionality ensures that water continues to move, preventing the formation of thick, solid ice. Many of our customers find these thermostats especially effective for dock de-icing, helping to protect their boats and docks from ice damage.

Portable PreWired ThermostatSimple Setup for Effective Ice Management

Setting up our dock de-icer thermostat is straightforward:

  1. Connect the Power: Plug the controller’s power cord into a grounded 120V outlet.
  2. Set the Desired Temperature: Use the dial on the controller to set the temperature at which you want the de-icer to activate. De-icer manufacturers typically recommend a setting of 30°F to start the de-icer just below freezing temperatures.
  3. Plug in Your De-icer: Connect your de-icer to the controller’s piggyback plug.

Once the ambient air temperature hits your set point, the thermostat activates the de-icer. It then turns the device off once the temperature rises by 3 degrees above the set point, ensuring efficient use of energy.

Benefits Beyond Ice Prevention

While the primary function of our thermostats in this context is to prevent ice formation, they also play a crucial role in ecological conservation. By keeping waters moving and ice-free, they help protect aquatic life such as fish, which can be endangered by extensive ice cover that blocks oxygen exchange in the water.

For a more comprehensive understanding of how our NEMA 4X weatherproof line voltage thermostats work and to see them in action, watch the detailed video below. This guide will provide further insights into the setup and benefits, helping you make the most informed decision for your needs.

Whether you’re looking to protect personal property or ensure the safety of aquatic life through the colder months, our thermostats offer a reliable and efficient solution.


Talk to a product specialist today!


Original equipment manufacturers & agricultural communities worldwide use temperature controls designed & manufactured by K-Kontrols. Our temperature controls are great for barns, greenhouses, livestock buildings, garages, vacation homes, construction sites & more.

Custom Options

Variety of custom options available such as temperature ranges, sensing element lengths & private branding.


K-Kontrols meet NEMA 4X, UL, cUL & NEC 457 Ag-ratings.

High Quality

We take pride in quality control & reliable operation of our components. Every switch is individually tested before it leaves the plant.

Made in the U.S.A.

Products are designed, manufactured, tested & shipped from our facilities in Eau Claire, WI to clients across the globe.