Industrial & Commercial Contractors: HVAC, Plumbing, Restaurant Equipment, Process Piping, Concrete, Excavation, Refrigeration, & Sheet Metal - 24 / 7 Emergency Service - Installation, Service & Maintenance. Portland Mechanical Contractors was founded in 1998 as a small mechanical contracting company with just six employees focused on HVAC and Refrigeration Service. We are now one of the largest mechanical contractors in the Northwest offering a wide array of products and services. Our goal is simple: to provide a full service, one stop shop that addresses all aspects of mechanical needs for local contractors and business owners. Through our comprehensive contractor services, we are able to design efficient and powerful mechanical systems to meet the demanding needs of today’s competitive marketplace. At Portland Mechanical Contractors, we are proud to offer an unmatched set of contractor services all backed with the security of our 24 hour, 7 days a week customer repair service.