Gas equipment is usually set for one type of gas from the manufacturer, whether it’s LP (Propane) or Natural gas. This is important when choosing your equipment because this will define the correct fuel type to match what you have at home or in your place of business. Otherwise, you will need to have your equipment converted. A stove will burn hotter than it should and cause a lot of soot, a water heater will burn too hot and potentially cause a fire. An appliance conversion is when you make changes to an appliance so it can use a different fuel as opposed to the one it was designed for. The replacement of gas orifices, burners and/or appliance regulators are part of this process. The internal connections and fittings are designed to work with the pressure of that gas install, thus why a conversion is necessary for the safe operation of the gas equipment.