Geo Tech Inc Po Box 23107 Billings, MT 59104 Phone : (406) 248-5700 Business Category Heating Contractors Heating & Air Conditioning Repair Heating Contractors-Oil Furnaces & Boilers Heaters-Automotive (Wholesale) Geo Tech Inc 4235 Bruce Ave Billings, MT 59101 Phone : (406) 248-5700 Business Category Air Conditioning Contractors & Systems Heating Contractors Plumbing Heating Equipment & Supplies Plumbing Heating & Air-Conditioning Heating Equipment & Boilers Wholesale