... more flexible installation Be Safe and reliable, large volume of water, energy-saving, environmentally friendly, small in size. Easily ... white, etc.), and capacity from 80L to 500L.Water circulation heat pump heater (Built-in circulation pump) the host and ... eradicate the potential hazard of leakage, corrosion, incrustation, etc.Built-in high-efficiency heat exchanger and water circulating pump in the ...