We just got our first fuel bill since we installed the Blaze King. Before the king we used 303 gallons, after we only used 133! AND that was in -45 weather. THANK YOU BLAZE KING. P.S. After 5 weeks I let the stove go out long enough to clean the ashes. We were gone for the weekend so it was a good time to let it go out. It is up and running again. It also makes the house feel much more comfortable and livable and warm. Oh, we also heat our hot water with the oil so even in the summer we use some oil.