Tecogen, Inc. is a leading manufacturer of gas engine-driven equipment. The company markets three product lines: TECOCHILL engine-driven chillers in the 50-1000 ton size range; TecoFROST engine-driven refrigeration compressors up to 440 HP; and 75 kW TECOGEN cogeneration modules. Tecogen has an in-house sales staff that manage an independent sales representative network based throughout the United States and the world. Tecogen also has a marketing group, and an extensive service network with service employees in several major cities across the United States.