Worcester Greenstar 18I System Gas Boiler ERP 7733600008

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The Worcester 18i System Boiler is the perfect choice for small properties such as flats and bungalows. Offering compact dimensions, a low lift weight and A-Rated efficiency, the 18i has the potential to save money on annual heating bills and offer reliability through even the coldest months. The 18i System Boiler will require a hot water cylinder in order to deliver hot water to the property. The high efficiency of the 18i boiler can cut heating and hot water bills by 15-20% annually (When replacing an older, G-Rated boiler) and is up to 30% cheaper to run. These savings mean that over the years the boiler will essentially pay for itself, as the quality of Worcester boilers means that you won't need to replace it for many years. Easy to use, the Worcester 18i includes simple boiler controls to ensure your boiler is set at the correct temperature for the customer's need, while also providing operational information and diagnostics to help with maintenance.
  • 5 Year warranty on Greenstar gas boilers as standard
  • Integrated expansion vessel and pump
  • SEDBUK A-Rated efficiency
  • Compact and lightweight
  • Wall mounting jig
  • Single sided front case
  • Pre-wired mains cable
  • Simple boiler controls
  • On-board operational information and diagnostics
  • CondenseSure style syphon inside

Technical specification

ERP Efficiency
ERP Rating
Boiler Type
330 mm
700 mm
400 mm
DHW Output Min and Max
< 24
SEDBUK SAP 2009 Rating
CH Condensing Max Output
18 kw
Heat Output
18 kW
Years Guaranteed
Made To Order
Manufacturer Model No
Brand Name
Worcester Bosch


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