I’ve seen one of these in a commercial building: https://www.yanmar.com/global/energy/ghp/vrf/ https://www.yanmar.com/global/energy/ghp/vrf/. But a renewable e

I’ve seen one of these in a commercial building: https://www.yanmar.com/global/energy/ghp/vrf/ https://www.yanmar.com/global/energy/ghp/vrf/. But a renewable energy powered heat pump is better.