ENERA PRO – Solar Water Heater (Thermosiphon) Heat-Pipe

1.095,00 1.895,00  inc. IVA

The solar water heater with heat-pipe vacuum pipes is ideal for areas with low insolation. Also suitable for businesses. Universal structure suitable for all types of roofs. The internal version – acid-resistant stainless steel 316 guarantees a long operating time of the thermosyphon.





  • Power output sharply increased by the CPC concentrators.
  • Two modes suitable for both summer and winter.
  • Fast assembly CPC more easily disassembly.
  • No water inside tubes, a solar system can wold normally when tubes are broken.
  • Socket-high erosion-resistant 316L stainless steel, one formed by stamping moulding. No welding.
  • Overheating prevention in Summer and Higher sunlight absorbing in Winter.
  • Polished mirror CPC concentrators, parabolic curve sunlight accumulated, 360* vacuum tube absorber, much more power output than the normal solar collectors.
  • Superheat pipe faster startup, high pressure working, new structure nylon tube caps make the installation more easily.
  • Connection on tank backside, more convenient for the slope roof installation, safer by the special heating element box.

For areas with low insolation.

Optimal for any villas in the North of Spain.


The inside of vacuum tubes does not circulate the water. The absorbent layer transforms solar radiation into thermal energy and the heat pipes transmit it in a heat exchanger (heating element of water) located in the tank.

This system is perfect for less insolated regions: areas with a lower annual rate of sunny days, of low ambient temperatures and also for “hard” (highly mineralized) water. The heating element is a 1,80 m long vacuum tube with an internal “heat pipe” – a smaller copper tube filled with a special liquid. The internal “heat pipe” (i.e. thermotube) collects and transfers the heat up to the copper head located inside the water tank. The copper head, in turn, heats water in the tank. The tank is always hermetic, and the system works well even with one or more vacuum tubes are broken. This type of water heater can be easily integrated with any existing gas or electric water heating (or house heating) system.


The system is easy to install, and the supporting system is well designed for both flat and inclined surfaces.

English Installation Manual

Spanish Installation Manual

Controller 619-F

The new controller for pressure solar water heater contains two temperature sensors (for tank water temperature and pipe temperature respectively), which has the function of heating water to certain temperature with electricity through heating time control, back water pump output, water flow signal input, and electric pipe heating as well as output.

Technical Datasheet