Alliant Systems

Alliant Systems is a mechanical contractor serving the Pacific Northwest from its headquarters in Seattle, Washington. As a signatory contractor with the International Association of Sheet Metal, Air, Rail and Transportation Workers (SMART) Local 16, the company employs skilled union tradespeople committed to quality and safety. With over 30 years of experience in the construction and building services industry, Alliant Systems has built a reputation for delivering complex systems design, construction, and maintenance services. The company's core services include mechanical engineering, mechanical systems design, design-build, HVAC systems, plumbing, electrical, building automation, and energy services. Alliant Systems specializes in energy-efficient building technologies, serving industrial, commercial, and institutional clients across the manufacturing, healthcare, education, and commercial real estate sectors. Their experienced team brings expertise in BIM/VDC, commissioning, controls, and advanced filtration. Alliant Systems serves clients throughout Oregon, Washington, and the greater Pacific Northwest region. In addition to their Seattle headquarters, the company has branch offices in Portland, Eugene, and Bend, allowing them to support projects ranging from local renovations to multi-state facilities. The company maintains strong relationships with SMART and is committed to employing trained, certified tradespeople. Alliant Systems holds certifications from OSHA, NEBB, and LEED, and is licensed in multiple states. With bonding capacity of $25 million, their commitment to safety is demonstrated by their exceptional safety record and comprehensive safety programs. Notable work includes projects for Amazon, Microsoft, Oregon Health & Science University, and the University of Washington. With a team of over 250 professionals, Alliant Systems has the resources to handle complex projects of all sizes. The company has been recognized with awards from the Associated General Contractors (AGC) and the American Subcontractors Association (ASA). For mechanical construction and building services in the Pacific Northwest, Alliant Systems offers reliable, high-quality workmanship and a collaborative approach. Contact them to discuss your next commercial, industrial, or institutional project.