Reimers Electric Boilers are designed accepted in Canada and the U.S. For Canadian applications Reimers secures a CRN for the Province of destination. CRN is Canadian Registration Number. The process to get a CRN starts with a design to ASME standards and verified by third party for quality adherence. Electric boilers and water heaters receive a metal stamping before they leave the factory. Do not compromise safety and performance by using a boiler that is not ASME and CRN stamped.