The Laar's Lite2 400,000 BTU millivolt natural gas heater is one of the most reliable heaters on the market. High performance insulation and efficient operation make this heater an excellent value. The Lite2 heater features a field proven millivolt ignition system and electronic thermostat that requires no electrical hookup. It has a self-cleaning, hot surface ignition which provides quick start up every time. The copper heat exchange and Flo-Thru baffles allow for efficient heat transfer, lowering your operating costs and extending your swimming season. The ceramic combustion chamber contributes to a lighter weight and more compact design. Also available in a propane gas model.