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February 14, 2024 at 12:52 pm · · Comments Off on W.H. Demmons

W.H. Demmons

W.H. Demmons is a leading design-build-maintain engineering firm focused on reducing your energy costs through proven innovative engineering, design, and installation solutions. W.H. Demmons takes great pride in the expertise and dedication of its employees, and strongly believes in continual education and training for all staff members. Unique in its capabilities, Demmons features a 110 year-old Roofing division, a full-service HVAC Service and maintenance division, a design-build engineering team, and our own fully-faceted sheet metal shop on premises in Portland.


John Mairano

Director of Business Development- HVAC