Newcomb & Boyd has added two new mechanical engineers and four co-ops to its staff. Daniel T. Schultz has joined the firm and Lynda B. Herrig rejoined the firm as a mechanical engineer. Treston Vines, Mark Azarraga, Kai Chi Wong, and Nathan Firesheets have joined the firm as co-ops.

Viessmann Manufacturing has appointed Richard Corcoran general manager of Viessmann Manufacturing Co. (U.S.) Inc. He brings 20 years of experience in the North American plumbing and heating industry to this position.

The Reliable Automatic Sprinkler Co. is pleased to introduce Mike Cauley as their new sales representative covering New England.