Western Allied Mechanical has been a leader in the construction industry for 50+ years as a mechanical contractor that specia ... lizes in design/build for bio-tech, high tech; retrofit and replacement; LEED and Green projects; and HVAC service and maintenance. We have 30+ service technicians and trucks; 150+ sheetmetal and pipe fitter tradesmen; and 10+ Mechanical Design Engineers to service the greater Bay Area. read more