Thermann 5* 26ltr Continuous Flow Hot Water Unit 60 Degree Natural Gas
  • 10


    Heat Exchanger Warranty



Designed and manufactured in Japan, Thermann Gas Continuous Flow hot water units use the latest technologies to heat water as required, rather than storing it. This simply means they’ll never run out of hot water which is ideal for big families. Sometimes referred to as instantaneous units, they are a really sensible method of water heating, because you only pay to heat the water you use. The Continuous Flow units are available in both NG and LPG to suit your gas type.

  • Japanese Technology and Manufacture
  • AGA approved
  • Over 50 years of manufacturing experience
  • Product Quality Guarantee
  • Watermark approved
  • Available in NG and LPG in 50 and 60 degree models

Prices are inclusive of GST

Must be installed by a licensed plumber.

The Process

  1. A hot water tap is turned on
  2. Water enters the heater
  3. The water flow sensor detects the water flow
  4. The computer automatically ignites the burner
  5. Water circulates through the heat exchanger
  6. The heat exchanger heats the water to the designated temperature
  7. When the tap is turned off, the unit shuts down
ResizedImage421454 how it works diagram
No. Bathrooms 1 1-2 2-3
Energy Rating (stars) 5.2 5.3 5.8
Capacity @ 25°C rise (L/min) 16 20 26
Capacity @ 40°C rise (L/min) 10 12.5 16.25
Gas Type Available NG, LPG NG, LPG NG, LPG
Nominal hourly gas consumption (MJ/h) 125 160 200
Test point pressure NG (kPa) 0.4 0.56 0.68
Test point pressure LPG (kPa) 0.4 0.61 0.7
Minimum water pressure (kPa) 260 260 210
Maximum water pressure (kPa) 1200 1200 1200
Minimum gas inlet pressure NG (kPa) 1.13 1.13 1.13
Minimum gas inlet pressure LPG (kPa) 2.75 2.75 2.75
Maximum gas inlet pressure NG (kPa) 5.0 5.0 5.0
Maximum gas inlet pressure LPG (kPa) 7.0 7.0 7.0
Minimum flow rate ignition (L/min) 2.7 2.7 2.7
Input voltage single phase 50HZ (v) 240 240 240
Maximum output current (A) 0.42 0.45 0.47
Inlet gas connection male thread R3/4” (20mm) R3/4” (20mm) R3/4” (20mm)
Cold water connection male thread R1/2” (15mm) R1/2” (15mm) R3/4” (20mm)
Hot water connection male thread R1/2” (15mm) R1/2” (15mm) R3/4” (20mm)
Relief valve pressure setting (kPa) 1400 1400 1400
Weight dry (kg) 16 16 17
Dimensions (DxWxH mm) 165x350x575 165x350x575 165x350x575

SAIG Approval Certificate no. GSC520021. Watermark Certificate of Compliance WMKA 00506

tech diagramthermann 5 star bottom tech

Optional AccessoriesCode
Kitchen Controller with 15m cable 9504157
Bathroom Controller with 15m cable 9504158
Ensuite Controller with 15m cable 9504159
Recess Box Gal 9504553
Recess Box Painted 9504555
Locking Bracket 9504554

9504157 kitchen controller9504158 bathroom controller


When choosing a hot water system, there are a number of factors you need to consider beyond the unit price. Installation costs can vary greatly for different types of hot water units. Ongoing running costs should also play a part in your purchase decision.

running cost chart

Guide only based on current average energy cost. This chart does not account for increased Electricity or Gas costs in coming years.

Where to Buy

Thermann hot water systems are available exclusively through Reece Plumbing. Find your nearest branch by entering your postcode below.

(You will be taken to the Reece website)


Here are the most common questions we get asked about hot water.

Get in Touch

Want to find out more about any of the hot water systems in the Thermann range? We’re happy to help.