Low-temperature heating (LTH) and high-temperature cooling (HTC) systems that use less energy than traditional systems are viable alternatives for dealing with rising energy demand and increasing renewable energy’s share in the global energy matrix. The present work proposes an innovative LTH-HTC system comprising photovoltaic thermal cooling panels, heat pump, and smart thermal energy storage (TES). MATLAB software evaluates the hourly variation of techno-environmental metrics to investigate the proposed system’s feasibility for a case study building in Stockholm. Moreover, the impact of key operational factors on system performance is evaluated by looking at their impact on the performance and environmental facets. According to the results, the primary energy saving and emission mitigation ratios of 54.8 and 57.2% are obtained by applying an intelligent control strategy to the TES. The parametric study results indicate that while the increase of panel area is techno-environmentally suitable, a lower heat pump capacity should be selected.