Compact solar water heater is a kind of solar water heating system that solar collector and storage are connected together with the cylinder storage on the top and collector panel on the bottom. There is no need of pump to push the fluid and no need of pipeline between the collector and storage. It is a simple and safe solution to get heat power from the sun. Compact Solar Water Heater (A series) move household water or a heat-transfer fluid through the system without pumps. This kind of passive systems have the advantage that electricity outage and electric pump breakdown are not issues. This makes passive systems generally more reliable, easier to maintain, and possibly longer lasting than active systems. Passive systems are often less expensive than active systems, but are also generally less efficient due to slower water flow rates through the system.

Features:
Cheap but reliable solution, Simple structure, Easy installation
High efficiency with daily average efficiency higher than 50%
Withstands water pressure no more than 0.1MPa
Operation without any power supply could be
Could be installed using parallel and/or series connections
Auxiliary electric booster is optional. 1500W 3000W
Hot water can be used directly for, or can be used as a pre-heat