This portable heater heats up to 1000 sq. ft. with its 40,000-BTU output. Features piezo-spark ignition, single-handed ignition, and automatic overheat shut-off. 10' hose and regulator included. Operates 11 hours on a single, 20-lb. propane gas cylinder (sold separately). Uses 20- to 100-lb. LP cylinders. Requires electricity for proper operation.