The compact, cylinder shaped SunStar® RCH Series spot heaters don't need electricity, come in 4 different models and can heat up to a 2,500 sq. ft. area. The RCH Series are available in propane gas or natural gas options, provide 95,000 BTY/hr for propane gas and 100,000 BTU/hr rating for natural gas models, have manual or thermostatically controlled models, a 14" diameter base and a stainless steel emitter.