The BF30T thermostatically controlled 30,000 Btuh capacity, blue flame style, vent-free gas room heater fromSunStar Heating Products, Inc.is designed for use in offices or hard-to-heat areas. The unit is available is either a natural gas or LP gas model and features a nonelectric thermostatic control with a two-stage gas valve, a Peizo spark ignition system, and top-mounted controls.