What is an All Fuel Chimney?
All Fuel Chimney is a prefabricated chimney intended to be used with fuels such as wood, coal, oil or gas. It is tested under the UL103 test standard and is called a “Residential Type and Building and Heating Appliance Chimney.” This type of chimney is also often referred to as “Class A” or “A-Vent” in our industry.