US Patent 10288361 Hot and cold shelf assembly with replaceable heating elements

A heating and cooling unit includes a panel, a heating assembly configured to heat the panel as part of a heating operation, and a cooling assembly configured to cool the panel as part of a cooling operation. The heating assembly includes a first plate disposed along a first side of the panel, the first plate having a body that defines a slot. The heating assembly further includes a heating element disposed within the slot. The cooling assembly includes a second plate coupled to the first plate and a cooling element coupled to the second plate. The panel, the heating assembly, and the cooling assembly are arranged in a stacked configuration with the heating assembly between the panel and the cooling assembly.