CM Furnaces is a UL panel shop. This means that all our furnaces are U.S. UL certified. A UL Listing means that UL has tested representative samples of a product and determined that it meets UL’s requirements. These requirements are often based on UL’s published and nationally recognized Standards for Safety. UL helps companies demonstrate safety, confirm compliance, enhance sustainability, manage transparency, deliver quality and performance, strengthen security, protect brand reputation, build workplace excellence, and advance societal wellbeing.