Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW)
Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW)
Download ErP Data Sheet

Greenstar i System (9kW to 24kW) overview

Our Greenstar i System boiler is our most popular system boiler that is suitable for small to medium sized homes.

This boiler can also be used with our high efficiency Greenstore cylinders for a complete Worcester system solution for your home.

Download our easy guide, which covers everything you need to know about the Greenstar i System (9kW to 24kW)

Standard Guarantee 

  • 7 Year

With any Greenstar System Filter

  • 8 Year

With any Greenstar System Filter + £40 (Non-WAI loyalty members only)*

  • 10 year

*Available to loyalty scheme members only. Non-WAI’s can achieve this extended guarantee length with an additional payment of £150. Terms and conditions apply.

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

Greenstar 9i System LPG

Part number
7 733 600 033
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
9.2
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 9i System

Part number
7 733 600 011
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
9.2
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 12i System LPG

Part number
7 733 600 034
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
12.2
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 12i System

Part number
7 733 600 010
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
12.2
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 15i System

Part number
7 733 600 009
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
15.3
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 15i System LPG

Part number
7 733 600 035
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
15.3
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 18i System LPG

Part number
7 733 600 036
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
18.4
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 18i System

Part number
7 733 600 008
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
18.4
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 21i System LPG

Part number
7 733 600 037
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
21.6
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 21i System

Part number
7 733 600 007
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
21.6
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 24i System LPG

Part number
7 733 600 038
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (LPG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
24.6
Dimensions (mm) height x width x depth
710 x 400 x 330

Greenstar 24i System

Part number
7 733 600 006
ErP Efficiency Rating
A
ErP Data Sheet
ErP Data Sheet
Fuel Type
Gas (NG)
Control Options
EasyControl Compatible 1
Solar Compatible
Central heating output (kW)
24.6
Dimensions (mm) height x width x depth
710 x 400 x 330

*With installation of optional built-in diverter valve

† The Condensesure Siphon has been proven to be effective at preventing frozen condensate at -15°C for a sustained period of 48 hours. 32mm pipework must be used and should not exceed 3 metre

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