Fosters Hydronic Heating Logo

bosch_logo_white_2 Hydronic Boilers

Manufactured in Germany, the world renowned Bosch hydronic boiler range is available in Australia through the Bosch Specialised Dealer network. All Bosch hydronic boilers come complete with a self-cleaning Aluminium/ silicone heat cell for prolonged system life, a fully electric safety management and fault diagnostic system, built in expansion vessel and modulating pump. All Bosch boilers are available as internal or external models and are suitable for both Natural / LPG gas.

High Efficiency (Condensing) Boilers:

Bosch condensing boiler technology is the latest advancement in hydronic boiler efficiency. 

A condensing boiler features a secondary heat exchanger and is designed to recover the heat waste which is usually expelled through the flue. The heat waste is diverted and then utilised as a pre heat system before the water reaches the main heat exchanger. Compulsory in most european countries, condensing boilers technology is the most efficient hydronic boiler feature available.




Bosch 18 Kwatt (Condensing) Boiler:

The Bosch 18 (External/Internal) is a gas fired condensing boiler with a heat output of 18 Kwatts.

Bosch 30 Kwatt (Condensing) Boiler:

The Bosch 30 (External/Internal) is a gas fired condensing boiler with a heat output of 30 Kwatts.

Bosch 37 Kwatt (Condensing) Combination Boiler:

The Bosch 37 Combination (External/Internal) is a gas fired condensing boiler with a heat output of 30 Kwatts and a domestic hot water flow rate of 21 Litres Per Minute (@25 degree temp rise).



Parts & Labour Warranty*

Market Leading


Heat Exchange Warranty*


*Terms & Conditions apply

Features include: 

  • Fully electronic safety management and fault diagnostics
  • Self-cleaning Aluminium/ Silicone heat cell for prolonged system life
  • Fan assisted stainless steel burner
  • Fail safe controls
  • Electronic ignition
  • Circulating pump
  • Closed water expansion system
  • Silver weather-proof casing
  • 2 Year manufactures warranty.