New Line of Snow & Ice Controls Brings Professional Grade Features to Residential and Commercial Heat Trace Applications

Share Article

To meet demands for a midrange line of controls for commercial and high-end residential snow and ice management applications, Environmental Technology is adding the new Pro Series line of controls to the Snow Switch brand.

Environmental Technology began developing snow and ice melting sensors and controls in 1968. The original sensor and control panel—the Model 100 control panel and the SIT–3 pavement-mounted sensor—would evolve over time into an entire family of sensors, controllers and control panels that collectively make up the Snow Switch brand. Environmental Technology is happy to introduce the newest Snow Switch controls, the GF Pro snow and ice control with ground fault and the PD Pro snow and ice control for pilot duty applications.

The Pro Series line of controls is the result of several years of developing and testing to integrate the best of recent Environmental Technology modular technology improvements with reliable, field proven snow and ice sensors. Over the last year, Environmental Technology has enlisted the direct involvement of several heater manufacturers, ETI Partners, and building industry professionals to specify feature sets that were missing in the midrange of the snow and ice melting control market. The result is the Snow Switch model GF Pro and PD Pro controls. Each is tailored for specific application requirements. The GF Pro provides ground fault equipment protection (30 milliamps) to automatically selected operating voltages from 200 VAC to 277 VAC for resistive loads up to 30 amps. The PD Pro provides pilot duty switching capabilities, operating at 120 VAC for inductive loads up to 7 amps. The PD Pro can also be used with resistive loads up to 30 amps with a customer-supplied GFEP branch circuit breaker.

The GF Pro and PD Pro both work with the same field proven sensors that have been used for decades with other Snow Switch controls, the APS and EUR control panels. When used with up to two compatible sensors, the GF Pro and PD Pro automatically control snow and ice melting systems for minimum energy costs. Applications include pavement, sidewalk, loading dock, roof, gutter, and down spout snow/ice melting in commercial and residential environments. The PD Pro control is ideally suited for applications requiring inductive load switching, such as boiler controls, temperature regulating valves, PLCs, and electrically- and mechanically-held relays.

The Pro Series line of controls features Environmental Technology’s Sno-Test™ technology—which momentarily simulates snow/ice conditions and performs a heater self-test when power is applied to the heaters. Both models have been tested by Underwriters Laboratories and are listed to UL 873 Temperature-Indicating and -Regulating Equipment. The GF Pro is additionally listed to UL 1053 Ground-Fault Sensing and Relaying Equipment.

For more information on the Pro Series line of control or other Environmental Technology products, please visit

GF Pro Snow & Ice Control Product Data
PD Pro Snow & Ice Control Product Data

About Environmental Technology, Inc.

Since 1968, Environmental Technology, Inc. has designed and manufactured products for effectively managing the environment. From energy efficient snow melting and deicing to pressurization systems for satellite and microwave transmission lines, we have 40 years of experience as an industry leader in developing and delivering effective environmental management systems. Environmental Technology products are used in snow and ice melting, freeze protection, process temperature control, humidity and moisture management, building automation systems, dry air systems, waveguide and dielectric-coax pressurization, antenna deicing systems, environmental interfaces for management and controls systems, and more. Environmental Technology, Inc. is located in South Bend, IN.


Share article on social media or email:

View article via:

Pdf Print

Contact Author

Chuck Gartland
Email >
Visit website