Bosch C21

Bosch C21
Gas Hot Water System
1 to 2 Bathrooms
5.56 Star Energy Rating
21 Litre Per Minute
Flow Rate
3 Years
Parts & Labour Warranty
10 Years
Heat Exchanger Warranty
Natural Gas or LPG
External Installation


The Bosch Highflow condensing range is an energy efficient appliance that has been recently introduced into the Australian Market. The range offers consumers an environmentally friendly solution which also reduces running costs within their home.

The range consists of both 21L & 26L capacities which are ideal for 1-3 bathroom homes and is available in both NG & LP gas.

Unlike, the existing Highflow range currently available the C21 & C26 use Condensing technology, utilising the heat from the exhaust gas and using it to preheat incoming cold water, making these one of the most energy efficient gas hot water appliances in the market.

Boasting a respective 6.7 & 6.9 energy efficiency rating the range additionally provides a 12% energy saving in comparison to our existing Highflow range.

Consumers can also enjoy the luxury of a shower at the perfect temperature through the use of our controllers in which the condensing range can utilise up to 4 in a household.

The C21 & C26 units are both compact in design with a frame size of only 520mm H x 350mm W x 170mm D the C26 is the same frame size as a 17e or 21e and will fit into a lockable recess box (RBH50L)

For further information on the C21 & C26 visit our website or contact us on 1300 30 70 37

Technical Manual

Continuous flow comfort and performance
– A 12% energy saving**
– Up to 4 temperature controllers
– Compact, lightweight design