
Courtesy Thermal Associates
By Christine Graf
It’s been more than 40 years since Marj DeVit and her husband, Marty, opened their heating and air conditioning business. The Glens Falls company, Thermal Associates, was a pioneer in air source heat pump technology during the energy crisis in the 1970s and 1980s.
During the 1980s, Thermal Associates was one of the first companies to introduce geothermal heat pump technology to the region.
Geothermal heat pumps can heat, cool, and supply hot water to a home by transferring heat to or from the ground. According to the U.S. Department of Energy, the use of geothermal technology can reduce energy bills by up to 65 percent compared to traditional HVAC units. Because geothermal heat pumps require no fossil fuels to operate, they emit significantly less CO2 than traditional units. Approximately 40 percent of U.S. CO2 emissions result from the demand for heating, cooling, and hot water.
In the early years of the business, DeVit worked from home handling phone calls, scheduling service calls, and performing accounting tasks.





