Uponor North America named Charlie Harte as general manager of Canada. Harte will be responsible for sales and marketing leadership of the Uponor Canadian business.

Tecumseh Products Co. has announced the appointments of Claudia Andrea da Silva as global motor technology manager and Scarlet Bryce Hauff as global material technology manager in order to strengthen the company’s global research and development capabilities.

Uponor has named Bill Gray president of Uponor North America. He is also a member of the Uponor Group executive committee.

Regal Beloit announces acquisition; Research Products names president of its geothermal heat pump division; Danfoss names sales directors; Uponor North America names president; Bronz-Glow gains certification; Tecumseh Products appoints global motor technology manager and global materials technology manager; ThermaSys is acquired; Spirax Sarco expands steam system facility.

Source Refrigeration & HVAC announced that Bruce Buchholz has been named president and chief executive officer. Buchholz replaces Lauren Abrams, who resigned as CEO of Source for medical reasons.

The National Environmental Balancing Bureau (NEBB) has announced the appointment of Tom Meyer as director of technical services. As the association’s technical expert, Meyer will be responsible for the quality of NEBB’s technical programs, including publications, training, education, advising and testing content.

Lennox International Inc. announced that its board of directors has elected CEO Todd M. Bluedorn as chairman of the board of directors and Richard L. Thompson as lead director. These changes will be effective upon conclusion of the 2012 annual meeting of stockholders.

Source Refrigeration & HVAC, Anaheim, Calif., announced that Bruce Buchholz has been named president and chief executive officer. Buchholz replaces Lauren Abrams, who resigned as CEO of Source for medical reasons.