Flame King Portable Heater Propane Gas Outdoor with Piezo Electric StartThis incredible heater eliminates the need to gather firewood and having to deal with all that messy ash. The Flame King portable heater utilizes catalytic heating technology to deliver a flameless heat, providing 3,000 BTUs for up to 7 hours on a single 1lb propane bottle. Since there is no open flame (just a heat producing catalytic reaction instead), this catalytic heater consumes propane at a much slower rate, greatly reducing the number of trips