The DXH90FAV forced air propane heater burns at 90,000 BTU/hr and can be adjusted down 50,000 BTU/hr. Equipped with quiet burner technology this heater operates with 50% less noise than standard units of similar size. Includes a 20' hose and regulator, and is manufactured with a large ergonomic handle and a split barrel design for easy maintenance. When operated with a 40lb propane tank you can heat approximately 2250 square feet of space for around 10 hours on high or 17 hours on low.