The latest in green climate-control technology is being installed Thursday at the historic Cockayne Farmstead in Glen Dale.
Officials said when the house was built 150 years ago, at that time, the latest technology was used in the home's heating and cooling systems.
But now a geothermal system was chosen as a ''green'' method to control the temperature and humidity inside.
This will prevent deterioration.
Visitors won't even be able to tell the repairs have been done, when the work is finished.
Sid Loudin of Rumer-Loudin Inc., of Barnesville, the installation contractor, said a geothermal climate system uses the constant temperature of the earth below the depth of 11 feet to both heat and cool the structure.