Abstract: A thermal system may include a vapor compression refrigeration circuit conducting a first refrigerant, an absorption refrigeration circuit conducting a second refrigerant and an absorbent, and a heat exchanger unit. The vapor compression refrigeration circuit may include a first heat rejection heat exchanger, a first heat absorption heat exchanger, a compressor disposed between the first heat absorption heat exchanger and the first heat rejection heat exchanger, and an expansion valve disposed between and connected to the first heat rejection heat exchanger and the first heat absorption heat exchanger. The absorption refrigeration circuit may include a generator, an absorber, a pump disposed between and connected to the absorber and the generator, a throttling valve disposed between and connected to the generator and the absorber, a second heat rejection heat exchanger connected to the generator, and a second heat absorption heat exchanger connected to the absorber.