I would! I bet you will notice a difference, just let the Guru do the work. Once I reach within about 50 degrees of where I want to be, I cut the guru fan down to half or even a quarter open and close my vents, then fuel consumption is greatly reduced. I hope that helps you a bit. That size firebox should not need a reload IMO, unless you are losing alot of heat or its a colder climate. Good Luck!