Go hog wild with the 18,000 BTU portable propane heater from Heat Hog. This durable indoor safe portable radiant space heater runs quietly on 1lb cylinder or a 20lb propane tank (with accessory house), one (1) AAA battery, and doesn't require any electricity. Giving you up to 4.7 hours of heat per 1 lb. LP tank max on the lowest setting. Heating up to 450 square feet, this durable, small propane heater features a tiltable design so you can adjust the heat angle, a dock to keep your fuel warm so you get more from your tanks, and curved plaque technology for a wider heating angle. Stay warm indoors and outdoors. Great for small spaces like your garage. tailgating, ice fishing, hunting, camping, or anywhere you need reliable convenient heat quickly. Includes 1-year manufacturer warranty and safety guard, tip-over switch and an Oxygen Depletion Sensor (ODS) which detects low oxygen or accidental falls, automatically turning off the unit. If the unit needs to be cleaned or part replacements, components are easy to access.