If you need to heat large indoor or outdoor areas look no further than the Dyna-Glo 25,000 BTU Propane Convection Heater. The RMC-LPC25DG can heat up 600 sq ft, with a 360° area radius. This convection heater has a continuous variable BTU valve, which means you have complete control of the heat between 15,000 BTU to 25,000 BTU and maximize fuel efficiency.