Lennox 73W81 Liquid Propane To Natural Gas Conversion Kit

The Lennox 73W81 is a conversion kit that enables changing a liquid propane (LP) furnace or boiler to natural gas. It has all the required components, such as new burner orifices and gas valve regulator spring to change the fuel type of your HVAC equipment. Natural gas is usually cheaper and more efficient than propane, therefore conversion of the system can result to low fuel cost and high efficiency. LP/Propane to Natural Gas Conversion Kit; Measure Unit. This is because natural gas is cheaper and more efficient than propane which means that when converted you could save on fuel costs and increase on efficiency.