... R.China.Our mainly products is air source and geothermal heat pump for water heater / heating & swimming pool, include Monobloc and Split ... with electric water heater .2. Split water heater heat pump, heating capacity from 13000BTU--180000BTU, COP is above 4.8, ... , sauna, heating system , bathing spot, bathtub, public bath, hotel, school, koi ponds etc. Super quality air source heat pump water heater- ...