water source heat pump unit “Hstars” The screw-type water source heat pump unit is mainly based on water energy, and meets the needs of winter heating and summer cooling through an advanced water source heat pump central air conditioning system. The system is approximately 50% energy efficient compared to conventional air conditioning heating systems. Brand: Hstars Cooling capacity range: 98kw ~ 7931kw; heating range: 119kw ~ 9142kw Applications: hotels, hospitals, sauna bath centers, factories and other areas.