Harrisburg-based HB Global LLC announced it has acquired Spectrum Mechanical & Service Contractors LLC, an HVAC company in Arizona.

Manheim Township-based Trangle Refrigeration Co. bought the commercial HVAC and plumbing assets of EH Gochnauer & Sons Inc. in East Hempfield Township, according to company representatives.

A federal report from Energy Star, which was released recently, raised eyebrows when it suggested programming home thermostats to save money.

Harrisburg-based HB Global has created a fourth operating division after acquiring Massachusetts-based North Shore Mechanical Contractors. The deal pushes HB Global to more than 1,100 employees.

Harrisburg-based HB Global, the parent company of H.B. McClure, is growing in the Philadelphia region following a new acquisition.

It may be allergy season, but poor indoor air quality could be the culprit behind many of common health complaints employees have on the job. Small businesses are often the most vulnerable to the problem.