The burn time of an appliance is based on the consumption rate of the fuel being burned. Less consumption = longer burn time.
*Essentially the overall heat output does not change per fueling. The hourly heat output changes based on the length of burn time.
Heat output is based on the volume and Btu value of the fuel being burned - adjusted for the efficiency of the appliance.
Use the calculator below to determine the actual appliance heat output over the burn time.
Cell Color = Drop Down Cells				Cell Color = Default / User Input Cells
Heating Fuel	Selected Fuel Btu per lb.	Hopper Capacity - Pounds	Total Hopper Capacity - Btu	Appliance Stated Btu Input	Burn Time @ Max Input - Hours	Appliance Stated Efficiency	Total Btu Output By fuel	Appliance Btu Output Per Hour
Wood Pellets						50% 55% 60% 61% 62% 63% 64% 65% 66% 67% 68% 69% 70% 71% 72% 73% 74% 75% 76% 77% 78% 79% 80% 81% 82% 83% 84% 85% 86% 87% 88% 89% 90% 91% 99%
Use the calculator below determine the adjusted heat output based on the adjusted burn time.
The Same Appliance, Capacity and Fuel - Adjusted Fuel Combustion Rate			Total Hopper Capacity - Btu	Adjusted Burn Time - Hours	Adjusted Btu Input Per Hour	Appliance Stated Efficiency	Total Btu Output By fuel	Adjusted Btu Output Per Hour
Wood Pellets	8,200			1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 30 36 42 48 54 60
For wood pellet burning appliances with no efficiency stated. the assumed minimum efficiency is 70 percent.