Abstract: 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.

Abstract: A heating and cooling apparatus is disclosed that combines a PTC heating element with a fan, and a combination of a cooling device aided by a thermoelectric cooling device to provide heating, passive air conditioning, and air circulation. The heating and cooling apparatus can include a condensation trap, a collection container, and an ozone generator for collecting and purifying the condensate. In addition, this apparatus provides the additional function of serving as an air purification system operating either in combination with the heating/cooling functions or as an independent air purifier.

Abstract: A heating and cooling apparatus is disclosed that combines a PTC heating element with a fan, and a combination of a cooling device aided by a thermoelectric cooling device to provide heating, passive air conditioning, and air circulation. The heating and cooling apparatus can include a condensation trap, a collection container, and an ozone generator for collecting and purifying the condensate. In addition, this apparatus provides the additional function of serving as an air purification system operating either in combination with the heating/cooling functions or as an independent air purifier.