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Worcester Bosch Greenstar 18i System Boiler

Worcester Bosch Boiler - Accredited Installer

Bosch Boiler, Boilers Ireland, Worcester Bosch Boilers

Greenstar 18i System Boiler

The Worcester Bosch Greenstar 18i System Boiler is a popular system boiler that is suitable for a small to medium size homes. It's compact size and easy to use controls make it a popular choice for homeowners.


1,995       was €2,105 ORDER NOW


What's Included


tick-icon Worcester Bosch 18 i System Boiler tick-icon Horizontal Flue
tick-icon Up to 10 Years Manufacturer Warranty tick-icon Upgrade & extension of gas line (1m)
tick-icon Removal of existing boiler tick-icon Internal condensate disposal
tick-icon Full chemical flush tick-icon Full commissioning of gas system


Get €700 grant when you upgrade your Heating Controls?


The right heating controls will let you keep your home at a comfortable temperature without wasting fuel or heat.


  • You are eligible to receive grant of  €700 help cover the cost of boiler and heating control upgrades to all homes built before 2006.
  • You are also eligible to receive Electric Ireland credit on your next Gas or Electric Bill
  • You can save money on your heating bills by installing and using your heating efficiently
  • You can schedule your heating and hot water to go on and off when needed.
  • You can select areas of your home to heat and the required temperature for each room, rather than heating a whole house at the same temperature.
  • You’ll reduce your carbon dioxide emissions.


Product Specifications




ErP Efficiency Rating A
LPG model available Yes
Wave Compatible  Yes
Solar Compatible Yes
Control Options Yes
Central heating output (kW) 18
Dimensions (mm) height x width x depth 710 x 400 x 330
Clearances (mm) above, sides, below and front 30, 5, 200, 600
Maximum horizontal flue (mm) 4600
Maximum vertical flue (mm) 6400
Ingress protection rating IP20
Wall mounting jig supplied Yes
Minimum inlet pressure (bar) N/A
NOx emissions (mg/kWh) 50
Lift weight (kg) 30.9




*All prices shown, are subject to pre-site survey
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Up to 10 Years Warranty

ERP A Rated


€2,095 was €2,170

Worcester Bosch Greenstar 24i System Boiler


Up to 10 Years Warranty

ERP A Rated


€2,150 was €2,232

Worcester Bosch Greenstar 30i System Boiler


Up to 10 Years Warranty

ERP A Rated


€2,531 was €2,623

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Choose from our large range of gas boilers.


We have a boiler to suit every home.



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Improving your home can represent a substantial investment. Our expert plumbers will give you peace of mind, with a top quality heating installation.

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