One or more techniques and/or systems are disclosed for a heating device may comprise a control assembly having a self-contained, on board power supply. A control unit may control the operation of the heater and the power supply may comprise a first power source in electrical communication with the control unit, wherein the control unit controls the operation of the first power source to selectively supply electrical power to at least a portion of the heating device; and, a second power source in electrical communication with the control unit, wherein the control unit controls the operation of the second power source to selectively supply electrical power to at least a portion of the heating device.

A personal heater device including an ignition device configured to generate a spark to ignite a fuel; a combustion location where ignited fuel burns in response to the spark; a battery receiving port configured to receive a battery; a controller; and a fan assembly including a motor electrically coupled the battery receiving port and controlled by the controller, a fan coupled to an output shaft of the motor, and a passageway configured to route airflow generated by the fan to a location near the combustion location.

A heater including a cylindrical housing with an inlet end, an outlet end, and an axis extending between the inlet end and the outlet end. A combustion chamber is positioned at least partially within the cylindrical housing. A base is coupled to the cylindrical housing. A user interface is operable to control combustion within the combustion chamber. The axis is positioned between the base and the user interface.

A forced air heater that includes two air moving devices for improved control of air and fuel mixture for combustion, and improved air flow the heater. In addition to better air flow, the heater includes an improved fuel system that utilizes a pump and delivery controls to accommodate reduced air flow while avoiding incomplete combustion and fume odors.

Method of combusting hydrocarbon fuel to form combustion products low in nitrogen dioxide (NO2) and carbon monoxide (CO) and mixing the combustion products with additional air to provide a heated air stream suitable for heating enclosed spaces includes the following steps: (a) delivering a fuel stream to a burner assembly; (b) delivering a combustion air stream to the burner assembly; (c) combining the fuel and air streams within a combustion chamber and heat exchanger wherein the mixture is ignited, completely combusted, and the temperature of the products of combustion are reduced; (d) providing tempering air to the external side of the combustion chamber and heat exchanger to transfer heat away from the combustion gases to tempering air; (e) combining the partially heated tempering air and cooled combustion products low in NO2 and CO; and (f) discharging the mixture into a space to be heated.

In accordance with the principals of the present invention, a furnace unit adapted to be installed in-line with a fuel source of a furnace modulates natural gas or propane to reduce fuel consumption, minimize temperature overshoot, and reduce furnace short cycling. A modulator is contained with the furnace unit. The modulator is in gaseous communication with the in-line gas fuel source. A furnace sensor senses furnace criteria related to the operation of the furnace. A microcontroller receives from the furnace sensor furnace criteria and controls the modulator based on the furnace criteria. In a further aspect of the invention, an environmental sensor can be provided to sense environmental criteria related to the operation of the furnace. In a further aspect of the invention, a base unit in electrical communication with the furnace unit can be provided, the base unit determining energy consumption usage and savings. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Outdoor power equipment includes a frame supported by a plurality of wheels and an air heating system. The air heating system includes an air inlet, an air outlet, a heating device configured to heat the air between the air inlet and the air outlet, and an adjustable duct connector fixedly coupled to at least one of the air inlet and the air outlet. The adjustable duct connector includes a base plate, a ring arm slidably coupled to the base plate, and a handle rotatably coupled to the base plate and the ring arm. Rotation of the handle selectively transitions the ring arm between a first position proximate the handle and a second position arranged further from the handle. The adjustable duct connector further includes a locking mechanism configured to secure the ring arm in the first position and the second position.