Abstract: To address the substantial heat demand and high energy consumption associated with production and living in cigarette factories, a heat pump system incorporating direct phase-change thermal storage was developed for cigarette factory A by integrating air-source heat pump and phase-change energy storage technologies. At night, valley-price electricity drives heat pump, and the heat rejected by the condenser is stored in the phase-change material (the phase-change material surrounds the refrigerant condenser tubes, enabling direct refrigerant-to-PCM heat transfer without an intermediate heat-transfer medium). Latent heat stored in phase-change materials was released for heating during the high-electricity-price hours in the daytime, and waste heat from the subcooler was used for heating at nighttime during the heat-storage process. The experimental results showed that, with R410A refrigerant charge of 2.5 kg and a paraffin phase-change material mass of 250 kg, and the mean coefficient of performance (COP) of the heat pump system reached 3.04 during the 6.4 h heat-storage period, the heat-storage capacity was approximately 46 kW·h, and the heat-storage amount was directly proportional to the heat-storage time. At the heat-storage and heat-release stages, the average heat release power of the system after being static for 12 hours was about 5.2 kW. This technology may help reduce the energy consumption and cost of heat supply in cigarette factories.