The end result is the production of an innovative multi-source heat pump combined with PCM, optimized by novel control algorithms to maximize performance, renewable energy fraction, greenhouse gas (GHG) reduction, cost savings, and energy system integration. For all solutions, advanced modeling and control approaches will be developed and integrated. Furthermore, to further mitigate the climate impact of our solution, the heat pump will be powered by a nearly-zero Global Warming Potential (GWP) propane R290 heat-exchanging fluid.