Abstract: A system and controller where the pressure of the air is continuously monitored or read at a designated exhaust point and adjustments made to the flow of the air and gas to keep the efficiency of the appliance at a maximum to control the appliance (or the burner for an appliance) within specifications as dictated by the customer or consumer rather than training the user.

Abstract: A system and controller where the pressure of the air is continuously monitored or read at a designated exhaust point and adjustments made to the flow of the air and gas to keep the efficiency of the appliance at a maximum to control the appliance (or the burner for an appliance) within specifications as dictated by the customer or consumer rather than training the user.

Abstract: A system and controller where the pressure of the air is continuously monitored or read at a designated exhaust point and adjustments made to the flow of the air and gas to keep the efficiency of the appliance at a maximum to control the appliance (or the burner for an appliance) within specifications as dictated by the customer or consumer rather than training the user.

Abstract: A system and method of controlling a variable speed air handling fan for a vent hood includes a temperature sensor and a processor. Speed setpoints and a deadband range are received from a user by the processor. The processor computes deadband setpoints and receives a temperature from the temperature sensor. The processor is in communication with a motor controller for controlling the speed of the fan. The processor changes the speed of the fan when the temperature rises above a certain setpoint. However, the processor will not change the speed of the fan back to its previous speed until the temperature falls below the deadband setpoint that corresponds to the certain setpoint.