ACI Northwest, Inc. is an HVAC, Excavation and Mine support contractor. Our HVAC division provides service to residential and commercial customers, new installations on commercial buildings, and retrofits on residential buildings. Our Excavation division performs site preparation, builds roads and highways, installs water and sewer mains, installs underground utilities and performs other general excavation services. Our Mine support division provides a variety of above ground support for mining facilities. Those services include transportation, remediation, road maintenance, crushing, tailings pond work, and general maintenance.