There are two types of solar water heating systems: active, which have circulating pumps and controls, and passive, which do not. Passive solar water heating systems are usually cheaper than active systems, but they are usually not as efficient. However, passive solar water heating systems can be more reliable and can last longer.
Brand Name: BABYSUN/OEM
Type: Evacuated Tube
Circulation Type: Direct/ Open Loop (Active)
Material: SUS 304 Inner Tank, Galvanized Steel Outer Tank
Technology: Non-welding Technology
Accessories: Magnesium Anode, Electric Heater, Intelligent Controller TK-8A, 8L Side Assistant Tank
Warranty: 5 Years