The Buderus G234X is an atmospheric gas boiler that is perfect for large residential and/or light commercial applications. Designed to resist thermal shock for a long life and a high silicone cast iron surface for excellent corrosion resistance. Featuring a full 3-1/2 in of thermal insulation for minimal standby heat losses plus offers low emissions with Premixed Burner Technology. All Buderus boilers are durable, quiet, efficient and designed for long life. Buderus boilers are manufactured to the highest standards, for low emissions and are factory tested. The Buderus G234X may be field-converted to propane. Plus it is service friendly and features a burner tray that is completely removable to aid in cleaning and servicing.