• Electric-Boosted Solar

    Solar · Solar Hot Water Systems

    Key Specifications

    Suitable for
    4 – 6 people ¹
    Fuel type
    Electric Boosted Solar
    Number of Tubes 250L
    Number of Tubes 315L
    Number of Tubes 400L

    Not designed for commercial use

    Find units for business

    • Warranty Information

      Domestic Warranty

      15 Year Solar Tubes
      10 Year Tank
      1 Year Parts and Labour

      Domestic Warranty on a timed recirculation system

      15 Year Solar Tubes
      3 Year Tank
      1 Year Parts and Labour


      15 Year Solar Tubes
      3 Year Tank
      1 Year Parts and Labour

    • Considerations


      Utilises free energy from the sun

      Reduced monthly electricity bills

      Great for climates that receive a lot of sunshine

      Government incentives can help offset part of the initial investment

      Boosting element


      Higher up front cost for equipment and installation

      Less efficient in winter

      Tubes are more effective when installed on a north facing roof to maximise the efficiency of the sun

    Always use a licensed plumber when installing a hot water system.

    Thermann Evacuated Tube Solar electric boosted hot water systems offer the best of both worlds. While the tubes harness the suns energy to heat your water, you also have the confidence of an affordable electric tank to provide back up if needed. You'll not only have peace of mind, you'll also reduce your running costs.

    • Leading industry warranties
    • Innovative technology
    • Lightweight systems- Heavy lifting not required
    • Energy efficient
    • Cyclone rated framework
    • Cost effective to run

    How it works

    Step 1
    The sunlight strikes the dark absorber coating inside the evacuated tube.

    Step 2
    The heat pipe transfers the heat up to the copper header pipe location in the insulated manifold box.

    Step 3
    A circulator moves water from the storage tank to the copper pipe warming the water. The solar heated water is then pushed down into the storage tank for use. Anti-frost is built in to the Thermann system to ensure solar hot water can be provided even in cold regions.

    Solar Systems GIF

    Save with Solar

    When it comes to lowering your power bills, Thermann is the right investment choice for the longer term. When paired with the solar tube components, it provides lower running costs, making it the smarter, more sustainable and affordable alternative to the traditional systems. It's also better for the environment. In times of high sun exposure, the system will use 100% of its energy from the sun, using almost 0 mains electricity.

    Solar savings
  • Electric-Boosted Solar line drawing
    Measurements (mm) 250L BOT 315L BOT 315L MID 400L BOT 400L MID
    Tank diameter (A) 617 617 617 705 705
    Tank height (B) 1445 1765 1765 1704 1704
    HW outlet 1211 1531 1531 1445 1445
    PTRV port 1211 1531 1531 1445 1445
    Top sensor port 786 872 872 809 832
    Solar return port 567 566 504 536 554
    Bottom sensor 347 355 326 340 357
    Solar Flow 197 197 197 219 219
    Cold Water Inlet 197 197 197 219 219
    Dry Weight (kg) 71 92 92 116 116
    Measurements (mm)
    Collector 22 Tubes 30 tubes
    Width (A) 1636 2196
    Length (B) 2005 2005
    W/O Tubes (weight) 20kg 24kg
    W/ Tubes (weight) 80.7kg 105.7kg
  • Product code Number of Tubes Capacity Element Position
    1318250 44 400L Bottom
    1318248 22 250L Bottom
    1318249 30 315L Bottom
    1318246 30 315L Middle
    1318247 44 400L Middle