A climate-control system comprising: a working fluid circuit having a first compressor, a first heat exchanger, a second heat exchanger, a flash tank, and a third heat exchanger, the first heat exchanger configured to receive working fluid discharged from the first compressor, the flash tank disposed downstream of the first heat exchanger and including an inlet and first and second outlets (42, 44), the first outlet configured to provide working fluid to the third heat exchanger disposed between the flash tank and the first compressor, the second outlet providing working fluid to the first compressor; and a storage tank containing phase-change material, the phase-change material thermally coupled with the second heat exchanger of the working fluid circuit, wherein the working fluid circuit includes: a first fluid passageway extending from an outlet of the first compressor and through the first heat exchanger to the second heat exchanger disposed within the storage tank; a second fluid passageway extending from the first outlet of the flash tank and through the third heat exchanger to an inlet of the first compressor; and a third fluid passageway extending from the second outlet of the flash tank to the first compressor, wherein the first outlet of the flash tank is a liquid outlet and the second outlet of the flash tank is a vapor outlet, characterized in that the working fluid circuit further includes a bypass passageway extending from the first fluid passageway at a location upstream of the first heat exchanger to a location of the first fluid passageway downstream of the first heat exchanger, the bypass passageway including a valve controlling fluid-flow through the bypass passageway. a working fluid circuit having a first compressor, a first heat exchanger, a second heat exchanger, a flash tank, and a third heat exchanger, the first heat exchanger configured to receive working fluid discharged from the first compressor, the flash tank disposed downstream of the first heat exchanger and including an inlet and first and second outlets (42, 44), the first outlet configured to provide working fluid to the third heat exchanger disposed between the flash tank and the first compressor, the second outlet providing working fluid to the first compressor; and a storage tank containing phase-change material, the phase-change material thermally coupled with the second heat exchanger of the working fluid circuit, wherein the working fluid circuit includes: a first fluid passageway extending from an outlet of the first compressor and through the first heat exchanger to the second heat exchanger disposed within the storage tank; a second fluid passageway extending from the first outlet of the flash tank and through the third heat exchanger to an inlet of the first compressor; and a third fluid passageway extending from the second outlet of the flash tank to the first compressor, wherein the first outlet of the flash tank is a liquid outlet and the second outlet of the flash tank is a vapor outlet, characterized in that the working fluid circuit further includes a bypass passageway extending from the first fluid passageway at a location upstream of the first heat exchanger to a location of the first fluid passageway downstream of the first heat exchanger, the bypass passageway including a valve controlling fluid-flow through the bypass passageway. a first fluid passageway extending from an outlet of the first compressor and through the first heat exchanger to the second heat exchanger disposed within the storage tank; a second fluid passageway extending from the first outlet of the flash tank and through the third heat exchanger to an inlet of the first compressor; and a third fluid passageway extending from the second outlet of the flash tank to the first compressor, wherein the first outlet of the flash tank is a liquid outlet and the second outlet of the flash tank is a vapor outlet, characterized in that the working fluid circuit further includes a bypass passageway extending from the first fluid passageway at a location upstream of the first heat exchanger to a location of the first fluid passageway downstream of the first heat exchanger, the bypass passageway including a valve controlling fluid-flow through the bypass passageway.