Systems and methods for providing a personal heater are disclosed. In some embodiments, the personal heater comprises a housing, a heating element, and a controller. The housing is configured with an opening for receiving one or more feet. The controller is configured to cause the heating element to heat one or both of an interior and an exterior of the housing based on whether the one or more feet are inside the housing.

A portable indirect fuel fired heater includes a burner assembly having a fuel burner to deliver fuel from a fuel supply to a combustion chamber of the heater and a combustion air blower to deliver combustion air to the combustion chamber with the fuel for combustion in the combustion chamber to produce exhaust gases. A heat exchanger receives air to be heated in heat exchanging relationship with at least a portion of the combustion chamber. A sensor senses an oxygen level as a partial pressure of oxygen in the exhaust gases. A controller operates an actuator operatively connected to the burner assembly to controllably vary the delivery rate of combustion air and thus vary the ratio of the air and fuel responsive to the oxygen level sensed by the combustion sensor so as to maintain the sensed oxygen level at a prescribed set point level stored on the controller.

A combination stove and space heater is provided, comprising a stove portion and a removable heater portion disposed over the stove portion. The stove portion includes an enclosure having a removable drawer configured to receive one or more burnable fuels, a grating suspended by the enclosure over the removable drawer and configured to be heated by burning the one or more fuels. The removable heater portion includes a radiator having a plurality of vertical plates, each having a length along a lateral axis and a height along a vertical axis, an axial fan disposed at one side of the radiator and with an axis of flow substantially parallel to the lateral axis, and a cover disposed surrounding the radiator and the axial fan, the cover having openings on opposing ends along the lateral axis.

A forced air heater that includes a temperature sensing device, the temperature sensing device includes: a sensing plate mounted on a metallic component in the environment to be heated; and an electrical contact connected to the sensing plate, wherein the electrical contact is thermally coupled with the metallic component via the sensing plate. There is further provided a method of controlling a heater that includes a temperature sensing device that it is thermally connected to a solid component in the environment to be heated.

A heater includes a housing, one or more infrared heating elements positioned inside the housing, and a fan positioned inside the housing. The housing has a front surface with a border around the perimeter of the front surface, with ventilation slots extending through the border, and an open central area. The housing has a rear surface with a border around the perimeter of the rear surface, with ventilation slots extending through the border, and a closed central area. The heater includes a removable first bezel to block the ventilation slots and the central area of the front and rear surfaces and a removable second bezel to block the ventilation slots on the border and being open in the central area. The heater may be used without the first or second bezels, with the first bezel alone, or with the second bezel alone.

A PTC heating appliance has a heating element array including a first plurality of PTC chips stacked into a second plurality of columns and including porous heat-exchanging radiators each in thermal communication with one or more of the columns and arranged such that heat produced by any of the PTC chips is conducted into the porous heat-exchanging radiator or radiators with which it is in thermal communication. A fan is arranged to force air through the porous heat exchanging radiators such that the heat therein is extracted and blown from the appliance. A control is adapted to cause selective energization of sub-groups of the PTC chips and has at least a high and a low setting. A higher number of the PTC chips are energized during the high setting than during the low setting, and each subgroup includes at least one PTC chip of each column.

A heating appliance has electrical circuitry, a controller, a heating element, a temperature sensor, and a power selection switch having a varying power setting for enabling the user to select a varying power heating mode during which the room temperature is sensed by and if below a certain desirable temperature level, the controller causes higher power heating until the room temperature reaches the certain desirable temperature level and then causes lower power heating.

A foothold including a thermoelectric module includes a body having an air channel in which a suction fan is provided and a dissipation channel in which a dissipation fan is provided, and a cover including an air discharge portion disposed on the body. Further, the thermoelectric element is disposed between the dissipation heat sink and the cover.

Disclosed is an energy-saving and environment-friendly double-row air duct heater, including a bottom plate and a shell. A motor and fan blades are arranged on one end in the shell. The upper part of the shell is provided with a control device. A heating component is arranged on the other end in the shell. An air inlet is formed at the rear end of the shell, and an air outlet is formed at the front end of the shell. The heating component includes an air volume drainage device. Two groups of electric heating pipes are arranged on both sides of the air volume drainage device. Each group of electric heating pipes is composed of a plurality of vertically arranged electric heating pipes. An air guiding passage is formed between two adjacent electric heating pipes.

An air fryer includes a first housing, a second housing, a heating element supported in the first housing, a fan supported in the first housing, and an oil residual prevention arrangement. The oil residual prevention arrangement includes a screening member detachably attached on at least one of the first housing and the second housing to provide a boundary between the first housing and the second housing such that oil residual produced from the second housing is substantially blocked by the screen member. The screening member has a plurality of ventilating channels communicating the first housing with the second housing so as to maintain sufficient air circulation between the first housing and the second housing for air frying.