A:Answer Hi, we appreciate your interest in the Genesis EX-335 NG model. This model is designed to work with your home's natural gas line. If the home is fueled by a Bulk LP (propane) tank, then an LP model should be purchased instead. Weber provides a Natural Gas Set-up Guide on our website and detailed setup instructions are included in the Owner's Guide. Due to the variation in home gas line sizes, the connection will require some additional parts that can be easily sourced at your local hardware store. This will ensure your grill is receiving the correct amount of gas pressure for optimum performance. If you have further questions about the gas connection, we recommend consulting a licensed gas installation professional or contacting Weber directly. Thank you!