Wall heat pumps are like great helpers for keeping buildings comfy. They work by moving heat around, not making it from scratch. Think them as smart way to warm a room in winter and cool down in summer. They uses electricity to grab heat from one place and put it somewheres else. This is clever way to save energy, because instead of burning fuel for create heat, they just relocating existing heat. Kind of like fan moving air around house. Wall heat pump install on outside wall, and it has part that stick out little. Outside part is where the magic happen, taking or pushing heat to air. Inside, other unit blow warm or cooled air into your space. For business these are popular because save lots money on energy bills and better for enviroment. We at windfull makes these units, we know important it is to get right one for big job. Not just warm building, its about doing smart. For instance, our R290 75kW Commercial High-Power Air Source Heat Pump Water Heater is designed to meet various heating needs efficiently.