| Size | 300 Liter |
|---|---|
| Material | Galvanized/Painted |
| Brand | Duda Solar |
| Type | Solar Water Heater |
| Power Source | Solar |
| Color | White, Blue |
Check the listing for details. Passive Duda Solar Tube Water Heaters with attached Pressurized Tank. Color: White, Blue, Condition: New. Listed at 3078.48 USD. Pressurized Passive Solar Water Heater with Attached Tank Passive solar water heaters use vacuum tubes with heat pipes and an attached water tank for direct heating of potable water. Sunlight enters the tubes, converting into heat at ~94% efficiency, and is then carried up through the heat pipe to the manifold which heats the water inside of the attached water tank.