James N. Marshall Engineering, LLC

mechanical engineering consultants serving nebraska and the surrounding states hvac design geo-exchange (geothermal) heat pump systems, air and water-to-air heat pump systems, infloor radiant, variable refrigerant flow, variable air volume, single and multi-zone air handling systems, indoor air quality, weld smoke filtration systems, commercial kitchen exhaust plumbing design commercial kitchen, process piping, compressed air, sanitary, domestic water, fuel gas, weld gas, glycol, refrigerant, hot water, steam, chilled water and industrial wash systems forensic investigations storm damage, construction defects, fire, floods, product liability and other property losses of facilities. product development generator systems, diesel engines, light towers, arrow boards, backhoe loader tractors, portable heaters, filtration systems and pressure washers