... heat 3. 4.5 COP, R410a 4. CE approve Ground source heat pumpCooling capacity: 37532BUT/h ~716520BUT/hCOP: 3.9~ ... Using refrigerant 410A, no damage, environment friendly. 11.Multi-source designAir source , ground source, solar and electric auxiliary heat integrated together (optional), ... °C~45°C. 2012 MACON 16Kw DC inverter ground source heat pump,DC inverter geothermal cooling heating hot water Heat ...