South Africa's leading Eco Store - Need Assistance? 0861 661 326 or Click Here

Please note that due to the festive season as well as the onset of Loadshedding orders may be slightly delayed in being dispatched but we are doing our best to get them out as soon as possible. We value your patience at this time.

We would like to thank everyone for their support throughout the year and wish you all a wonderful festive season and a happy new year. Please note we will be closed from Friday 21st December 2018 at 12h00 and re-open on Monday 9th January 2019 at 09h00. We will not be processing any further orders after 12h00 on Friday 14th December 2018. Any orders placed after this date will only be processed in the new year. There will be limited availability on all products from Monday 10th December 2018.

Bosch WR18B31 18 Litre Battery Ignition LPG Gas Water Heater

Bosch gas water heaters offer innovative and energy saving features that provide temperature and flow rate control for both single and multi-point hot water systems.

Battery Ignition:
• Two D cell torch batteries provide the power to open the gas solenoid and fire the igniters when the unit detects water flow.
• Once the gas is ignited, the igniters cease firing and the water heats up rapidly.

Click here to see how to use the gas geyser as a back-up for your Solar Water Heating System with the optional Solar Kit.

Sign up for price alert
Excl. Tax: R 4,949.57 Incl. Tax: R 5,692.01

* Required Fields

Product Description


Saving with battery operated models

  • If the pilot flame burns 24 hours per day the potential saving is 80-90kg of gas per year. That is as much as R450 per year (48kg gas for R448 as a refill without deposit for bottle; 2x48kg = R225 + R450).

The Multi-point Hot Water System

  • With a multi-point hot water system, all hot water points are supplied by a single water heater. The amount and temperature of the water used can be individually controlled at each tap unit. This type of arrangement is best used where the piping runs to the various hot water outlets are not excessively long.

The Single-point Hot Water System

  • In this case, separate gas instantaneous water heaters are installed directly at each hot water point – over the kitchen sink and the bath, for example. The advantage of this arrangement is the immediate availability of hot water at the point of use.


  • Powerful: However large or small your hot water requirements are, Bosch has the appliance with the output to suit.
  • Economical: Instantaneous water heaters only use energy when hot water is used
  • Safe: The built-in thermoelectric flame-failure device prevents gas leaking if the pilot light goes off.
  • Convenient: Hot water wherever and whenever needed.
  • Compact: Attractive and compact design saves space and makes these appliances ideal for both old and new properties.
  • Versatile: Whichever option you choose - point of use or central supply - Bosch has the right water heater for you.

Technical Specifications

  • Capacity: 18 Litre.
  • Ignition Type: Battery Operated.
  • LPG (butane/propane) 28 (2.8) mbar (kPa).
  • Temperature control at maximum setting: Ambient +50°C (Flow Rate: 2.0 – 8.8 l/min).
  • Temperature control at minimum setting: Ambient +25°C (Flow Rate: 17.6 – 14.0 l/min).
  • Applications: Bathroom and kitchen.
  • Guarantee: 1 year full guarantee on parts. Appliances must be installed by a licensed gas installer according to BSH and local or national requirements.

Optional Solar Kit

  • To improve the quality of hot water distribution in water heaters and boilers, while making them compatible with thermal, solar-powered systems for heating household water. Its function involves maintaining a constant setting for the temperature of the mixed water that is provided for use, when conditions for supplying hot and cold water vary.
  • The Solar Kit can operate continuously, with hot water temperatures resulting from solar accumulation or from the support device.


  • Prevents hot water burns and damage to devices.
  • Use of the solar kit does not require the purchase of a separate solar water heater.
  • The support appliance works only if the solar system's water temperature is lower than 45 °C, without reducing the flow rate.
  • Savings in maintenance costs (the appliance has a shorter running time).

Additional Information

Additional Information

Disclaimer Please note that stock availability is subject to prior sales. Prices exclude delivery. The image serves as an example of what the product looks like and may differ slightly in appearance.
Guarantee/ Warranty 12 month product warranty
Maximum Flow Rate 18 L / min


Write Your Own Review

You're reviewing: Bosch WR18B31 18 Litre Battery Ignition LPG Gas Water Heater

How do you rate this product? *

  1 star 2 stars 3 stars 4 stars 5 stars

  • here

Product Tags

Product Tags

Other people marked this product with these tags:

Use spaces to separate tags. Use single quotes (') for phrases.