- Built-in circulating pump, plastic circulation pump is optional.
- R410A refrigerant, high efficiency for heating.
- Truly compact design, easy installation and maintenance.
- Electronic expansion valve.
- Works as the back-up heater for solar hot water geyser system.
- Max. hot water temperature 57DegC.
- Tube-in-shell heat exchanger, strongly against corrosion.
- LCD controller with timer function, control output for back-up electric heater.
- OEM service.