Abstract: Various embodiments include a method for regulating a burner appliance comprising a combustion chamber, an air supply duct with an actuator to adjust the air supply, and a fuel supply duct with a fuel actuator to adjust the fuel supply. The method comprises: determining the value of the air supply V L; determining the value of an air ratio ?; providing an individual scalar fuel parameter h; calculating the power output P_ist of the appliance based on the air supply V L, the air ratio ?, and the individual scalar fuel parameter h using P_ist=h/?·V L; and regulating the burner appliance with the fuel actuator and the air actuator until the actual value reaches the target value.