Worcester Bosch Greenstar 21i System NG Boiler ErP

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Our Greenstar i System is our most popular wall-mounted system boiler with outputs up to 24kW.
Suitable for a wide range of homes, this boiler comes with a steel wall-mounting jig that not only allows pipes to go behind the boiler but also the ability to pre-pipe all of the pipework before the boiler is placed on the wall.
The appliance can be used with our range of high efficiency Greenstore cylinders.
• Wall mounting jig providing pre-plumbing and rear piping as standard
• Low lift weight
• Single panel front for ease of removal
• Central heating flow temperatures can be adjusted using simple up/down button
• Plug & play optional Worcester controls available*
• Fan can be removed with just one screw and the expansion tank is now inside the boiler
• Large siphon inside - eliminates risk of condensate pipe freezing †
• Achieves an A+ ErP efficiency rating for heating when installed with a Wave smart internet connected control (Excludes 9kW variant)
• Commissioning information for easier completion of the Benchmark checklist
• Homeowner service reminder
• Scan and register the boiler using our free MyWorcester App
More Information
BrandWorcester Bosch
Manufacturer Part Code7733600007
RangeGreenstar I
Product TypeSystem Boiler
Fuel TypeNatural Gas
Heat Output21.6 kW
Warranty5 Years
Depth330 mm
Height710 mm
Width400 mm

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