Geothermal heating systems extract heat from the ground to be used as a source of warmth inside. Geothermal systems provide a maximum temperature of around 115 degrees Fahrenheit.
Baseboard radiant heating is most efficient when paired with a boiler able to produce water temperatures between 160 and 180 degrees Fahrenheit. The fins or elements inside the typical baseboard heater, transfer heat from the hot water in copper tubes connected to a circulating pump. Heat rises from the top of the baseboard and the cool air is drawn in from the bottom until the temperature in the room reaches the thermostat setting. To heat a room with the lower input temperature of a geothermal system would require several additional traditional or more efficient, better designed, radiators.
A new perimeter heating baseboard is now available that provides sufficient efficiency for use with geothermal applications. "The Heating Edge" is installed on the wall just above the baseboards to ensure better convection action than the old floor mounted models. The coil block fins are spaced and reoriented to achieve better air draw, reducing the water temperature required to make the unit heat efficiently.