A gravity heating system, also known as an octopus furnace, is typically a ducted system that doesn't use a fan but rather is designed to allow the heat to rise naturally through the ducts to...8/25/2023
DefinitionA gravity heating system, also known as an octopus furnace, is typically a ducted system that doesn't use a fan but rather is designed to allow the heat to rise naturally through the ducts to different areas of the structure.
