Since Gerry Wiegmann ventured on his own to start Wiegmann Associates in 1995, two things have remained constant for the company — the mechanical contractor specializes in HVAC systems, and a Wiegmann has always been heavily involved in the company’s operations. But nearly everything else about the business has changed.
Columbia Gas unveils renewable natural gas fleet vehicle
The system, known as NeuFuel, differs from compressed natural gas because it can be used at a lower pressure than CNG.