SUNRAIN TUV Certificated 9kw~32kw ERP A+++ R32 EVI Hydronic Heat Pump China OEM Manufacturer Ductless Mini Air Conditioner DC Inverter Heat Pump Air To Water Heat Pump R32 refrigerant. ERP A+++ R32 EVI Hydronic Heat Pump . 1.Capacity: DC Inverter 6KW to 18kw four models. 2.Best Selling Market: Central, North & East Europe, North Europe. 3.