Started in 1991, Alpha Mechanical Heating & Air serves as a full-service mechanical contractor. The firm offers a range of services that include plumbing, (heating, ventilation and air conditioning) HVAC, mechanical, hydronics, pipefitting, site utilities, controls, fire sprinklers and protection, engineering/ integration as well as drawing coordination. Based in San Diego, Calif., it caters to government, commercial, industrial and military clients. The firm maintains repairs and services all types of HVACR equipment, including Trane, Carrier, McQuay, York, Smardt and Turbocor.