Brand: Yasuda Piezoelectrical Ignition Maximum output: 4.1 KW Type & Pressure of Gas: LPG (28-30 mBar) Three Power Settings ODS & Tilting Switch Flame failure Device Fast heating Energy Efficient Warrenty: 1 year Product Description A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented..Modern gas heaters have been further developed to include units which utilize radiant heat technology, rather than the principles of the Bunsen burner. This form of technology does not spread via convection, but rather, is absorbed by people and objects in its path. This form of heating is particularly useful for outdoor.