DMO Industries, otherwise known as Duomatic-Olsen,  was a furnace manufacturer in Canada.   The two brands produced by DMO were Olsen and Airco.  In 2000, ECR International, located in Utica, NY, purchased DMO Industries.  ECR International was bought by BDR Thermea Group in 2017, but ECR continues to produce the Olsen, Airco and Oneida Royal brands of furnaces.