(Audrey Richardson/Chicago Tribune) In cold weather, the fluid circulating through the geothermal system’s underground ...

The underground heating helps maintain pedestrian access to parks, the county courthouse, sidewalks at the library and ramps to a parking deck. "No salting, no plowing, no slipping or sliding ...

So, the designed system will blow ambient air through a pipe installed at a certain depth from the surface, and the air will get warmer or cooler in winter or summer due to heat exchange with the ...

Ground source heat pumps push fluid through a loop of pipes underground. Heat from the ground warms the fluid which flows up into your house, and through a heat exchanger where it heats up ...