A solar water heater is a device that uses solar energy to heat water. It consists of two main parts, the solar panels and the boiler. The solar panels absorb the sun's heat and transfer it to the water in the storage tank.

Below is a buying guide to help you choose the right water heater that will meet your needs.


  • Size & Capacity

In order to be able to choose the right solar that will serve your needs, you should take into account how many people will use the solar. The ratio is about 40L / person.


1 - 2 people80 - 100 L
2 - 3 people120 - 130 L
3 - 4 people150 - 160 L
4 - 5 people200 - 250 L
  • Collector Type

The collectors in a solar water heater are at the panel located in front of the boiler and are responsible for collecting the solar energy. There are 3 types of collectors, selective, non-selective and vacuum.

Selective and non-selective collectors: The selective one is the new generation collector that has a coating of copper or titanium oxides. Titanium collectors are more efficient as they can absorb up to 95% of solar radiation. Solar water heaters are designed to operate efficiently all year round. Selective collectors help us to ensure hot water, even during the winter months, despite the low temperatures. This is their main difference from non-selective collectors.

Vacuum Tubes: A vacuum tube solar water heater is a highly efficient system designed to harness solar energy for heating water. This technology consists of numerous glass tubes that encapsulate a vacuum, significantly reducing heat loss and increasing efficiency. The tubes are arranged vertically. Their operation is simple, the pipes are filled with water, which is heated and returns ready to the boiler.



  • Quality & Durability

Choose reliable manufacturers, who can guarantee you the quality and materials of the solar water heater and at the same time offer you a guarantee. In our store you will find EVIL solar water heaters, which are manufactured according to international standards and carry all the certificates and test reports that confirm their quality. They offer you a 5-year warranty. In addition, you will find the Pyramis solar water heaters that are 100% Greek-made, produced according to the highest quality criteria, possessing all the necessary European certificates, meeting strict quality, safety and hygiene standards. They are accompanied by a 5-year written guarantee.


  • Power source

The main source of solar energy is solar energy and it is divided into 2 types, double energy and triple energy solar.

Dual energy: Dual energy solar water heaters operate by exploiting solar energy, but on cloudy days they can also operate with electricity, like a classic boiler.

Triple-energy: Triple-energy solar water heaters have all the benefits of double-energy solar water heaters, but additionally have an inlet that exploits as a heating medium the hot water of the heating circuit produced by the central heating of the house.


  • Installation & Maintenance

The installation of the solar water heater must be done by a certified and experienced technician. The placement of the collectors must be done in a place that receives as much direct sunlight as possible.

Regular checks and cleanings are recommended for optimal system operation.