Bosch Condensing C21

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About Bosch Condensing C21

Bosch delivers durability, efficiency and quality when it comes to their gas continuous flow hot water heater range. If you’re environmentally conscious when it comes to your hot water heating requirements and would like a system that will save you money on your energy bills going forwards then you should consider a Bosch Condensing C21 gas continuous flow hot water heater.

Bosch hot water system

Bosch has utilised advanced condensing technology in the making of their Condensing C21 gas hot water system.

The unit has been designed to capture any additional heat that other hot water systems would waste via flue gases by the use of a second heat exchanger.

In turn, this makes the Bosch Condensing C21 hot water system more than 90% energy efficient as the captured heat is used to preheat the incoming cold water.

Delivering 21 litres of hot water per minute at a 25°C rise makes the Bosch Condensing C21 suitable for a home with between 1-2 bathrooms and with an extremely high energy rating of 6.9 stars the Bosch Condensing C21 hot water heater is one of the most energy efficient gas hot water systems on the market.

Bosch Condensing C21

Bosch Condensing C21 hot water heater repairs and servicing

If you currently have a Bosch Condensing C21 gas hot water heater installed on your property and require a service or repair of the unit call the experts from Jim’s Plumbing.

We have a team of hot water heater experts situated conveniently across all metropolitan areas of Adelaide, Melbourne, Perth, Brisbane, Sydney and Canberra  who are on-call 24 hours a day, 7 days a week to assist with all of your gas fitting or plumbing requirements.

If you find yourself with no hot water at 2am on a Sunday morning – give us a call on 1300 133 509.

At Jim’s Plumbing your hot water emergency is our hot water emergency and we strive to be at your location within an hour* of your call to rectify those gas or plumbing disasters.

No Interest Ever!* Payment Plan Options Available

No Interest Ever!* payment plan options available on hot water heater replacements to help ease any financial stress this burden may cause. If your bosch hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

Bosch Condensing C21 supply and new installation or replacement

Should you wish to have a Bosch Condensing C21 gas continuous flow hot water heater newly installed, or require one as a hot water heater replacement you can trust the professionals from Jim’s Plumbing. If you’d like to upgrade your old hot water system to a new, highly efficient Bosch Condensing C21 unit but a new hot water heater is the last thing you have budgeted for then just ask us about our no interest EVER payment plans*.

For only a small 10% deposit you can have your new Bosch Condensing C21 hot water heater installed today and then make monthly payments going forward until the system is paid off – without having to worry about interest or the financial pressure!

Below are the Bosch Condensing C21 specifications, if you’d like to discuss in further detail if this hot water heater would be right for your property call the fully qualified hot water specialists from Jim’s Plumbing and we’ll gladly send a local plumber to your location to provide you with expert advice a no obligation quote.  If you’re home has 2-3 bathrooms and you’d like the benefits of the Bosch Condensing range then have a look at the Bosch Condensing C26 unit.

Bosch Condensing C21 Specifications

Part No.BC1280RANG  (55˚C Natural Gas)
Part No.BC2180RALP (55 ˚C LP GAS)
Part No.BC2180RA5NG (50 ˚C Locked Natural Gas)
Part No.BC2180RA5LP (50 ˚C Locked LP Gas)
Energy Efficiency6.9 star rating
Operating Pressure (kPa)200-1000
Installation TypeExternal only
Ignition TypeElectronic Ignition
Flow Rate2.5 Litres per minute (at 20 ˚C inlet temp)
Unit Height520mm
Unit Width350mm
Unit Depth170mm
Unit Weight17 kg
Inlet Water Temp50 ˚C Maximum
Connection Size 
Water Inlet (20mm)R ¾
Gas Inlet (20mm)R ¾
Outlet – Hot Water (20mm)R ¾
Drain Outlet Condensation (15mm)R ½
Power230/240 VAC (50Hz)
Power Consumption40.6W (standard)
Power Consumption130W (Anti-freeze)
Warranty3 years parts & labour + 10 Yrs heat exchanger (part only)
Hot Water Temperature Controllers Maximum of 4

Choosing the Correct Hot Water System

Choosing the correct hot water system can be difficult, as there are so many options to choose from; Click on the links to find out more about these systems.




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Please be advised that we may have additional Bosch Hot Water System models available.

Simply book a plumber online now, or phone 1300 133 509 to book now.

*NO INTEREST EVER!* PAYMENT PLAN, “Fees, terms and conditions apply”.

No Interest Ever!* Payment Plan offered through Certegy Ezi-Pay Express. No Interest Ever on your hot water heater replacement or new supply and installation, gas service, water service or drain replacement. Conditions apply.

Information on this page is subject to change. Commercial hot water systems also available on enquiry.

*Conditions apply.