Climate Energy LLC was founded in 2000 with a charter to develop and market micro-combined heat and power (Micro-CHP) systems for residential and light commercial customers. The company is a joint venture between ECR International, Inc. and Yankee Scientific, Inc. All three businesses are privately held.

With the resources of ECR International and Yankee Scientific, Climate Energy has made important advances in the development of Micro-CHP systems that include technologies that are both practical and economical. Located in Medfield, Massachusetts, Climate Energy is the leading company in the USA involved with Micro-CHP appliances. Climate Energy has aggressively pursued protection of its intellectual property with regards to the technology and implementation of Micro-CHP systems in real world installations.