PORT HURON, MICH. — At St. Clair County Community College here, contractors as well as college students are learning first hand about sustainable technologies and building via a geothermal ...

GET UNDER MY LAWN: Drill rigs like this one can operate at 8 feet and — paired with an operator trained specifically for the job — can suffice for many residential geothermal direct exchange projects.

CASCADE, IA — When All Seasons Heating & Cooling, Dubuque, Iowa—a 75-employee sheet metal and mechanical contractor set up to do design builds or bid and spec jobs—was called to provide an HVAC ...