The solar water heater is the simplest and most widespread device for exploiting the energy offered by the sun.
During its operation, two natural phenomena are exploited.

With the principle of the water heater, the circulation of water is achieved in a natural way, while the heating of the water is done by exploiting the energy of the sun.
The solar water heater began to be used after the oil crisis of the 70s. In particular, in the 80s it began to be widely used in sunny countries such as the Mediterranean countries.

We distinguish between two types of solar water heaters depending on the circulation circuit of the heated medium:
Open circuit where the domestic water is heated directly by the solar system.
Closed circuit where the domestic water is indirectly heated. The heating medium circulates and transfers the heat to the water of use that circulates in an independent circuit.
Due to the intense hardness of the water in many areas of the country, we recommend the installation of closed-circuit solar systems.
Our cooperation with two of the main manufacturers of solar water heaters in Greece, SONNE and COSMOSOLAR, guarantees reliability and functionality.

Find an indicative variety of solar water heaters in our online store

How are the products we sell selected.

At SEFANI we have a team made up of specialized company executives and plumbers. This group is called the Materials Committee. Its purpose is to select the products we sell, but after first very carefully checking their specifications, their certifications and testing them in practice. This is how we conclude and recommend only those products that have the best VALUE / PRICE relationship.