Solar water heaters with vacuum tubes is a new technology with excellent performance.
This technology is great for solar heating, and also for heating water in swimming pools.
We can combine it with any tank, because the system can be divided, and is not compact.
It is the system we recommend because one can change the tank or the collector instead of the compact system in whicj one must use a specific tank or collector.
You can use a tank made of steel, glass or copper.
The vacuum tubes are recommended as a reliable and time tested solution for solar collectors.