Your Solution for Precision Sheet Metal Fabrication Our master tradesmen build a full range of HVAC applications: Duct systems Kitchen hoods Oven and equipment exhaust systems Fume, chemical, and dust exhaust systems Specialty metal fabrications Welded black iron Black plate Aluminum and stainless steel Custom flashings Plasma layout machine Powder River Heating & Air Conditioning’s in-house sheet metal fabrication shop allows us to respond quickly and efficiently to our customers’ needs.