A thermal energy module includes a housing having an open first surface and is filled with a refrigerant. Partition walls partition an interior of the housing into a compressing part, a condensing part, and an evaporating part. A compressor is provided in the compressing part. A first heat-exchanger is provided in the condensing part and configured to condense a compressed refrigerant supplied from the compressor by heat-exchange with a coolant. An expansion valve is configured to expand a refrigerant supplied from the condensing part to be supplied to the evaporating part. A second heat-exchanger is provided in the evaporating part and configured to heat-exchange a refrigerant supplied from the expansion valve with the coolant drawn into the interior of the housing to evaporate. A cover mounted on the open first surface of the housing closes and seals the interior of the housing.