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Worcester Boilers Boiler Efficiency Rating, Repair & Service

Worcester Bosch is one of the most well known boiler manufacturers in UK and have become a popular choice with homeowners looking for gas, oil or LPG boilers since their beginnings in 1962.

Their condensing boiler technology has seen Worcester Bosch lead the way when it comes to highly efficient boilers. With an extensive range of Combi, Regular and System boilers, their Greenstar models will help to lower the carbon footprint of your home as well your energy bills. These boilers have won several awards thanks to emitting low levels of CO2 and NOx, making them kinder on the environment than many other boilers on the market.

Model Type Fuel Efficiency
Worcester 14/19 CBi RSF Non-Condensing Gas 79.4%
Worcester 15 CBi RSF Non-Condensing Gas 76.6%
Worcester 15 Sbi RSF Non-Condensing Gas 79.1%
Worcester 19/24 CBi RSF Non-Condensing Gas 78.4%
Worcester 24 CBi RSF Non-Condensing Gas 76.9%
Worcester 24 CDi – L OF Non-Condensing LPG 79.6%
Worcester 24 Cdi BF Non-Condensing Gas 79.4%
Worcester 24 Cdi OF Non-Condensing Gas 76.2%
Worcester 24 Cdi RSF Non-Condensing Gas 76.0%
Worcester 24 CDi RSF-L Non-Condensing LPG 80.5%
Worcester 24 I RSF Non-Condensing Gas 76.1%
Worcester 24 LE RSF Non-Condensing Gas 76.0%
Worcester 24 Sbi RSF Non-Condensing Gas 78.3%
Worcester 24 SI II RSF Non-Condensing LPG 80.5%
Worcester 240 CF Non-Condensing Gas 65.0%
Worcester 240bf Non-Condensing Gas 65.0%
Worcester 240of Non-Condensing Gas 65.0%
Worcester 240rsf Non-Condensing Gas 70.0%
Worcester 24CDi RSF Serial ASB Non-Condensing Gas 78.1%
Worcester 24CDi RSF Serial ASC Non-Condensing LPG 80.5%
Worcester 24i – L RSF Non-Condensing Gas 78.3%
Worcester 24i Junior Non-Condensing Gas 78.0%
Worcester 25 Si – L RSF Non-Condensing Gas 78.0%
Worcester 25 Si RSF Non-Condensing LPG 81.1%
Worcester 25Si – LL RSF Non-Condensing LPG 81.1%
Worcester 26 Cdi Xtra Condensing Gas 85.4%
Worcester 26 CDi Xtra RSF Condensing LPG 86.5%
Worcester 26 CDi Xtra RSF – L Condensing Gas 86.4%
Worcester 28 CDi – L RSF Non-Condensing LPG 80.7%
Worcester 28 Cdi RSF Non-Condensing Gas 78.9%
Worcester 28 LE RSF Non-Condensing Gas 78.9%
Worcester 28 SI II RSF Non-Condensing Gas 78.4%
Worcester 28 Si RSF Non-Condensing LPG 81.4%
Worcester 280rsf Non-Condensing Gas 70.0%
Worcester 28i Junior Non-Condensing Gas 78.9%
Worcester 28i RSF Non-Condensing Gas 78.0%
Worcester 35 CDi II RSF Non-Condensing Gas 78.5%
Worcester 35 Cdi RSF Non-Condensing Gas 78.9%
Worcester 533 Compact ErP Condensing Gas 89.8%
Worcester 533 Compact NG Condensing Gas 89.8%
Worcester 535 Compact ErP Condensing Gas 89.8%
Worcester 535 Compact NG Condensing Gas 89.8%
Worcester 80 ic RSF Non-Condensing Gas 75.2%
Worcester 9.24electronicrsf Non-Condensing Gas 70.0%
Worcester 9.24electronicrsfe Non-Condensing Gas 70.0%
Worcester 9/14 CBi RSF Non-Condensing Gas 78.5%
Worcester Bosch 50/70.000 Non-Condensing Oil 85.3%
Worcester Bosch 70/90-000-NI-L Non-Condensing Oil 84.2%
Worcester Bosch 70/90.000 Non-Condensing Oil 83.9%
Worcester Bosch 90/110.000 Non-Condensing Oil 85.1%
Worcester Bosch Greenstar ZWBR 7-25A Condensing Gas 89.4%
Worcester Bosch RX-2 RSF Condensing Gas 85.4%
Worcester Bosch/British Gas CC1 ZWB 7-29A Condensing Gas 88.7%
Worcester Bosch/British Gas CS1 ZB 7-28A Condensing Gas 88.8%
Worcester Bosch/British Gas ICC2 ZWBR 11-37A Condensing Gas 89.5%
Worcester Bosch/British Gas ICC2 ZWBR 8-30A Condensing Gas 89.5%
Worcester Bosch/British Gas ICS1 ZBR 8-35A Condensing Gas 89.6%
Worcester Bosch/British Gas ICS1 ZSBR 7-28A Condensing Gas 88.8%
Worcester Bosch/British Gas RD529 ZWB 7-29 A Condensing Gas 88.7%
Worcester Danesmoor 12/14-000-GB-L Non-Condensing Oil 84.4%
Worcester Danesmoor 12/14-R00-GB-L Non-Condensing Oil 84.4%
Worcester Danesmoor 12/14.OOO Non-Condensing Oil 84.3%
Worcester Danesmoor 12/14.ROO Non-Condensing Oil 84.3%
Worcester Danesmoor 15/19.OOO Non-Condensing Oil 85.3%
Worcester Danesmoor 15/19.ROO Non-Condensing Oil 85.3%
Worcester Danesmoor 20/25 – R00-GB-L Non-Condensing Oil 84.2%
Worcester Danesmoor 20/25-000-GB-L Non-Condensing Oil 84.2%
Worcester Danesmoor 20/25.OOO Non-Condensing Oil 83.9%
Worcester Danesmoor 20/25.ROO Non-Condensing Oil 83.9%
Worcester Danesmoor 26/32.OOO Non-Condensing Oil 85.1%
Worcester Danesmoor 26/32.ROO Non-Condensing Oil 85.1%
Worcester Danesmoor 32/50 – 000 -GB – L Non-Condensing Oil 84.3%
Worcester Danesmoor 32/50.000 Non-Condensing Oil 83.1%
Worcester Danesmoor 50/70 – 000 – GB – L Non-Condensing Oil 84.1%
Worcester Danesmoor 50/70.000 Non-Condensing Oil 84.6%
Worcester Danesmoor FS 12-18 Non-Condensing Oil 84.7%
Worcester Danesmoor FS 18-25 Non-Condensing Oil 85.6%
Worcester Danesmoor System 12/14-0S0-GB-L System Non-Condensing Oil 84.4%
Worcester Danesmoor System 12/14-RS0-GB-L System Non-Condensing Oil 84.4%
Worcester Danesmoor System 12/14.OSO Non-Condensing Oil 84.3%
Worcester Danesmoor System 12/14.RSO Non-Condensing Oil 84.3%
Worcester Danesmoor System 15.19.OSO Non-Condensing Oil 85.3%
Worcester Danesmoor System 15/19.RSO Non-Condensing Oil 85.3%
Worcester Danesmoor System 20/25-0S0-GB-L System Non-Condensing Oil 84.2%
Worcester Danesmoor System 20/25-RS0-GB-L System Non-Condensing Oil 84.2%
Worcester Danesmoor System 20/25.OSO Non-Condensing Oil 83.9%
Worcester Danesmoor System 20/25.RSO Non-Condensing Oil 83.9%
Worcester Danesmoor Utility 12/14-000-GB-L Utility Non-Condensing Oil 84.4%
Worcester Danesmoor Utility 12/14-R00-GB-L Utility Non-Condensing Oil 84.4%
Worcester Danesmoor Utility 12/14.OOO Non-Condensing Oil 84.3%
Worcester Danesmoor Utility 12/14.ROO Non-Condensing Oil 84.3%
Worcester Danesmoor Utility 15/19.OOO Non-Condensing Oil 85.3%
Worcester Danesmoor Utility 15/19.ROO Non-Condensing Oil 85.3%
Worcester Danesmoor Utility 20/25-000-GB-L Utility Non-Condensing Oil 84.2%
Worcester Danesmoor Utility 20/25-R00-GB-L Utility Non-Condensing Oil 84.2%
Worcester Danesmoor Utility 20/25.OOO Non-Condensing Oil 83.9%
Worcester Danesmoor Utility 20/25.ROO Non-Condensing Oil 83.9%
Worcester Danesmoor Utility 32/50 – 000 – GB – Utility – L Non-Condensing Oil 84.3%
Worcester Danesmoor Utility 50/70 – 000 – GB – Utility – L Non-Condensing Oil 84.1%
Worcester Danesmoor Wall Mounted 12/19 – R00 – GB – L Non-Condensing Oil 84.4%
Worcester Danesmoor WM 12/19 RS Non-Condensing Oil 84.1%
Worcester Delglo 2bf Non-Condensing Gas 65.0%
Worcester Delglo 2of Non-Condensing Gas 65.0%
Worcester Delglo 3bf Non-Condensing Gas 65.0%
Worcester Delglo 3of Non-Condensing Gas 65.0%
Worcester Firefly HD II 100 Non-Condensing Oil 65.0%
Worcester Firefly HD II 40 Non-Condensing Oil 65.0%
Worcester Firefly HD II 40 D type Non-Condensing Oil 65.0%
Worcester Firefly HD II 50 Non-Condensing Oil 65.0%
Worcester Firefly HD II 50 D type Non-Condensing Oil 65.0%
Worcester Firefly HD II 60 D type Non-Condensing Oil 65.0%
Worcester Firefly HD II 70 Non-Condensing Oil 65.0%
Worcester Firefly HD II 80 Non-Condensing Oil 65.0%
Worcester Firefly PJ90-120 Non-Condensing Oil 65.0%
Worcester GB 162-50 kW Condensing Gas 88.7%
Worcester GB162-50 V2 Condensing Gas 88.7%
Worcester GB162-65 V2 Condensing Gas 88.6%
Worcester GB162-65kW Condensing Gas 88.9%
Worcester Greenstar 12 Ri Condensing Gas 88.8%
Worcester Greenstar 12i System Condensing Gas 88.8%
Worcester Greenstar 12i System ErP Condensing Gas 89.8%
Worcester Greenstar 12i System ErP LPG Condensing LPG 89.8%
Worcester Greenstar 12Ri ErP Condensing Gas 88.8%
Worcester Greenstar 12Ri ErP LPG Condensing LPG 89.0%
Worcester Greenstar 15 i System Condensing LPG 89.8%
Worcester Greenstar 15i System ErP Condensing Gas 89.7%
Worcester Greenstar 15i System ErP LPG Condensing LPG 89.1%
Worcester Greenstar 15Ri Condensing LPG 89.8%
Worcester Greenstar 15Ri ErP Condensing Gas 88.8%
Worcester Greenstar 15Ri ErP LPG Condensing LPG 89.1%
Worcester Greenstar 18 i System Condensing LPG 89.8%
Worcester Greenstar 18i System ErP Condensing Gas 89.7%
Worcester Greenstar 18i System ErP LPG Condensing LPG 89.1%
Worcester Greenstar 18Ri Condensing LPG 89.8%
Worcester Greenstar 18Ri ErP Condensing Gas 88.8%
Worcester Greenstar 18Ri ErP LPG Condensing LPG 89.2%
Worcester Greenstar 21i System ErP Condensing Gas 89.7%
Worcester Greenstar 21i System ErP LPG Condensing LPG 89.1%
Worcester Greenstar 24 Condensing Gas 88.6%
Worcester Greenstar 24 Ri Condensing Gas 89.2%
Worcester Greenstar 24i junior Condensing LPG 90.1%
Worcester Greenstar 24i System Condensing Gas 89.2%
Worcester Greenstar 24i System ErP Condensing Gas 89.7%
Worcester Greenstar 24i System ErP LPG Condensing LPG 89.1%
Worcester Greenstar 24Ri ErP Condensing Gas 89.2%
Worcester Greenstar 24Ri ErP LPG Condensing LPG 88.9%
Worcester Greenstar 25 Si Condensing LPG 90.1%
Worcester Greenstar 25 Si Compact Condensing Gas 89.8%
Worcester Greenstar 25i ErP Condensing Gas 89.6%
Worcester Greenstar 25i ErP LPG Condensing LPG 89.1%
Worcester Greenstar 25Si Compact ErP Condensing Gas 89.8%
Worcester Greenstar 25Si Compact ErP LPG Condensing LPG 90.4%
Worcester Greenstar 27 I System Compact Condensing Gas 89.0%
Worcester Greenstar 27 Ri Compact Condensing Gas 89.0%
Worcester Greenstar 27i System Compact ErP Condensing Gas 89.0%
Worcester Greenstar 27i System Compact ErP LPG Condensing LPG 89.9%
Worcester Greenstar 27Ri Compact ErP Condensing Gas 89.0%
Worcester Greenstar 27Ri Compact ErP LPG Condensing LPG 89.9%
Worcester Greenstar 28 Condensing Gas 88.6%
Worcester Greenstar 28 CDi Compact Condensing LPG 90.9%
Worcester Greenstar 28CDi Compact ErP Condensing Gas 89.8%
Worcester Greenstar 28CDi Compact ErP LPG Condensing LPG 90.4%
Worcester Greenstar 28i junior Condensing LPG 90.1%
Worcester Greenstar 29CDi Classic Condensing Gas 89.1%
Worcester Greenstar 29CDi Classic ErP Condensing Gas 89.1%
Worcester Greenstar 29CDi Classic ErP LPG Condensing LPG 90.1%
Worcester Greenstar 29CDi Combi Condensing LPG 90.1%
Worcester Greenstar 29HE Conventional ZB 7-29 Condensing Gas 88.7%
Worcester Greenstar 30 Condensing Gas 88.6%
Worcester Greenstar 30 CDi Classic Regular Condensing LPG 90.2%
Worcester Greenstar 30 CDi Classic System Condensing LPG 90.2%
Worcester Greenstar 30 I System Compact Condensing Gas 89.0%
Worcester Greenstar 30 LXi System Condensing Gas 89.0%
Worcester Greenstar 30 Ri Compact Condensing Gas 89.0%
Worcester Greenstar 30 Si Condensing LPG 90.1%
Worcester Greenstar 30 Si Compact Condensing Gas 89.8%
Worcester Greenstar 30CDi Classic Regular ErP Condensing Gas 89.2%
Worcester Greenstar 30CDi Classic Regular ErP LPG Condensing LPG 90.2%
Worcester Greenstar 30CDi Classic System ErP Condensing Gas 89.2%
Worcester Greenstar 30CDi Classic System ErP LPG Condensing LPG 90.2%
Worcester Greenstar 30i ErP Condensing Gas 89.6%
Worcester Greenstar 30i ErP LPG Condensing LPG 89.1%
Worcester Greenstar 30i System Compact ErP Condensing Gas 89.0%
Worcester Greenstar 30i System Compact ErP LPG Condensing LPG 89.9%
Worcester Greenstar 30Ri Compact ErP Condensing Gas 89.0%
Worcester Greenstar 30Ri Compact ErP LPG Condensing LPG 89.9%
Worcester Greenstar 30Si Compact ErP Condensing Gas 89.8%
Worcester Greenstar 30Si Compact ErP LPG Condensing LPG 90.4%
Worcester Greenstar 32 CDi Compact Condensing Gas 89.8%
Worcester Greenstar 32CDi Compact ErP Condensing Gas 89.8%
Worcester Greenstar 32CDi Compact ErP LPG Condensing LPG 90.4%
Worcester Greenstar 34 CDi Combi Condensing LPG 90.1%
Worcester Greenstar 34CDi Classic Condensing Gas 89.1%
Worcester Greenstar 34CDi Classic ErP Condensing Gas 89.1%
Worcester Greenstar 34CDi Classic ErP LPG Condensing LPG 90.1%
Worcester Greenstar 34CDi Combi Condensing Gas 89.1%
Worcester Greenstar 35 CDi Classic System Condensing LPG 90.2%
Worcester Greenstar 35CDi Classic System ErP Condensing Gas 89.2%
Worcester Greenstar 35CDi Classic System ErP LPG Condensing LPG 90.2%
Worcester Greenstar 36 CDi Compact Condensing LPG 90.9%
Worcester Greenstar 36CDi Compact ErP Condensing Gas 89.8%
Worcester Greenstar 36CDi Compact ErP LPG Condensing LPG 90.4%
Worcester Greenstar 36LXi Condensing Gas 89.8%
Worcester Greenstar 37 CDi Condensing LPG 90.4%
Worcester Greenstar 38CDi Classic Condensing Gas 89.0%
Worcester Greenstar 38CDi Classic ErP Condensing Gas 89.0%
Worcester Greenstar 38CDi Classic ErP LPG Condensing LPG 90.0%
Worcester Greenstar 38CDi Combi Condensing LPG 90.0%
Worcester Greenstar 40 CDi Classic Regular Condensing LPG 90.2%
Worcester Greenstar 40CDi Classic Regular ErP Condensing Gas 89.2%
Worcester Greenstar 40CDi Classic Regular ErP LPG Condensing LPG 90.2%
Worcester Greenstar 42 CDi Condensing LPG 90.4%
Worcester Greenstar 42CDi Classic Condensing Gas 89.4%
Worcester Greenstar 42CDi Classic ErP Condensing Gas 89.0%
Worcester Greenstar 42CDi Classic ErP LPG Condensing LPG 90.0%
Worcester Greenstar 9i System ErP Condensing Gas 89.8%
Worcester Greenstar 9i System ErP LPG Condensing LPG 89.8%
Worcester Greenstar Camray 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray 25/32 Condensing Oil 91.7%
Worcester Greenstar Camray External 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray External 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray External 25/32 Condensing Oil 91.7%
Worcester Greenstar Camray External System 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray External System 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray External System 25/32 Condensing Oil 91.7%
Worcester Greenstar Camray System 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray System 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray System 25/32 Condensing Oil 91.7%
Worcester Greenstar Camray Utility 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray Utility 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray Utility 25/32 Condensing Oil 91.7%
Worcester Greenstar Camray Utility System 12/18 Condensing Oil 90.9%
Worcester Greenstar Camray Utility System 18/25 Condensing Oil 91.2%
Worcester Greenstar Camray Utility System 25/32 Condensing Oil 91.7%
Worcester Greenstar CDi 25 Cdi Condensing Gas 90.0%
Worcester Greenstar CDi 27 CDi Condensing LPG 90.4%
Worcester Greenstar CDi 30 CDi Condensing Gas 89.4%
Worcester Greenstar Cdi 30 Cdi Conventional Condensing Gas 89.5%
Worcester Greenstar Cdi 30 Cdi System Condensing Gas 89.5%
Worcester Greenstar CDi 31 CDi Condensing Gas 89.4%
Worcester Greenstar CDi 35 CDi Condensing Gas 89.4%
Worcester Greenstar Cdi 40 Cdi Condensing Gas 89.4%
Worcester Greenstar Cdi 40 Cdi Conventional Condensing Gas 89.1%
Worcester Greenstar Danesmoor 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor 18/25-OOO-GB Condensing Oil 90.8%
Worcester Greenstar Danesmoor 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor External 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor External 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor External 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor External 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor External 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor External 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor System 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor System 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor System 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor System 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor System 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor System 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor System External 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor System External 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor System External 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor System External 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor System External 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor System External 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor System Utility 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor System Utility 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor System Utility 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor System Utility 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor System Utility 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor System Utility 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor Utility 12/18 Condensing Oil 91.1%
Worcester Greenstar Danesmoor Utility 12/18 ErP Condensing Oil 91.1%
Worcester Greenstar Danesmoor Utility 18/25 Condensing Oil 90.9%
Worcester Greenstar Danesmoor Utility 18/25 ErP Condensing Oil 90.9%
Worcester Greenstar Danesmoor Utility 25/32 Condensing Oil 90.7%
Worcester Greenstar Danesmoor Utility 25/32 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor Utility 32/50 ErP Condensing Oil 90.5%
Worcester Greenstar Danesmoor Utility 50/70 ErP Condensing Oil 90.7%
Worcester Greenstar Danesmoor Wall Mounted 18/25 Condensing Oil 90.7%
Worcester Greenstar Danesmoor Wall-Mounted 12/18 Condensing Oil 90.7%
Worcester Greenstar FS 30 CDi Regular Condensing Gas 88.9%
Worcester Greenstar FS 30CDi Regular ErP Condensing Gas 88.9%
Worcester Greenstar FS 42 CDi Regular Condensing Gas 88.8%
Worcester Greenstar FS 42CDi Regular ErP Condensing Gas 88.8%
Worcester Greenstar HE 12/22 RS Condensing Oil 89.5%
Worcester Greenstar HE Plus ZWBR 11-35A Condensing Gas 89.5%
Worcester Greenstar HE Plus ZWBR 7-28A Condensing Gas 88.7%
Worcester Greenstar HE ZB 7-27A Condensing Gas 88.8%
Worcester Greenstar HE ZWB 7-27A Condensing Gas 88.7%
Worcester Greenstar Heatslave 12/18 Condensing Oil 89.3%
Worcester Greenstar Heatslave 18/25-OSO-GB Condensing Oil 89.1%
Worcester Greenstar Heatslave 25/32 Condensing Oil 89.1%
Worcester Greenstar Heatslave External 12/18 Condensing Oil 89.3%
Worcester Greenstar Heatslave External 18/25 Condensing Oil 89.1%
Worcester Greenstar Heatslave External 25/32 Condensing Oil 89.1%
Worcester Greenstar Heatslave II 12/18 Condensing Oil 89.4%
Worcester Greenstar Heatslave II 12/18 ErP Condensing Oil 89.4%
Worcester Greenstar Heatslave II 18/25 Condensing Oil 89.2%
Worcester Greenstar Heatslave II 18/25 ErP Condensing Oil 89.2%
Worcester Greenstar Heatslave II 25/32 Condensing Oil 89.0%
Worcester Greenstar Heatslave II 25/32 ErP Condensing Oil 89.0%
Worcester Greenstar Heatslave II External 12/18 Condensing Oil 89.4%
Worcester Greenstar Heatslave II External 12/18 ErP Condensing Oil 89.4%
Worcester Greenstar Heatslave II External 18/25 Condensing Oil 89.2%
Worcester Greenstar Heatslave II External 18/25 ErP Condensing Oil 89.2%
Worcester Greenstar Heatslave II External 25/32 Condensing Oil 89.0%
Worcester Greenstar Heatslave II External 25/32 ErP Condensing Oil 89.0%
Worcester Greenstar Highflow 440 Condensing Gas 89.1%
Worcester Greenstar Highflow 440 CDi Condensing Gas 89.2%
Worcester Greenstar Highflow 440CDi ErP Condensing Gas 89.2%
Worcester Greenstar Highflow 550 CDi Condensing Gas 89.2%
Worcester Greenstar Highflow 550CDi ErP Condensing Gas 89.2%
Worcester Greenstar R 25 HE Combi Condensing Gas 88.7%
Worcester Greenstar R 28 HE System Condensing Gas 88.8%
Worcester Greenstar R 29 HE Conventional Condensing Gas 88.8%
Worcester Greenstar R 30 HE Combi Condensing Gas 88.7%
Worcester Greenstar R 30 HE Plus Combi Condensing LPG 89.7%
Worcester Greenstar R 30HE Plus Combi Condensing Gas 88.7%
Worcester Greenstar R 35 HE Plus Combi Condensing Gas 89.5%
Worcester Greenstar R 40 HE Conventional Condensing Gas 89.0%
Worcester Greenstar R 40 HE Plus Combi Condensing Gas 88.9%
Worcester Greenstar Utility 18/25-OOO-GB Condensing Oil 90.8%
Worcester Greenstar Utility 32/50-000-GB Condensing Oil 90.7%
Worcester Greenstar Utility 50/70-000-GB Condensing Oil 90.5%
Worcester Greenstar ZB 7-28 HE Condensing Gas 88.8%
Worcester Greenstar ZWB 7-25 HE Combi Condensing Gas 88.7%
Worcester Greenstar ZWB 7-30 HE Combi Condensing Gas 88.7%
Worcester Greenstar ZWBR 11-35 HE Plus Condensing Gas 89.5%
Worcester Greenstar ZWBR 7-30 HE Plus Condensing Gas 88.7%
Worcester Heat Slave 12/14.OSO Non-Condensing Oil 82.8%
Worcester Heat Slave 12/14.RSO Non-Condensing Oil 82.8%
Worcester Heat Slave 15/19.OSO Non-Condensing Oil 83.7%
Worcester Heat Slave 15/19.RSO Non-Condensing Oil 83.7%
Worcester Heat Slave 20/25.OSO Non-Condensing Oil 82.4%
Worcester Heat Slave 20/25.RSO Non-Condensing Oil 83.7%
Worcester Heatslave 12/14-OSO-GB-L Oil Combi Non-Condensing Oil 82.7%
Worcester Heatslave 12/14-RSO-GB-L Oil Combi Non-Condensing Oil 82.7%
Worcester Heatslave 12/14RS Non-Condensing Oil 70.0%
Worcester Heatslave 2 g40bf Non-Condensing Gas 65.0%
Worcester Heatslave 2 g40of Non-Condensing Gas 65.0%
Worcester Heatslave 2 g50bf Non-Condensing Gas 65.0%
Worcester Heatslave 2 g50of Non-Condensing Gas 65.0%
Worcester Heatslave 20/25-OSO-GB-L Oil Combi Non-Condensing Oil 82.5%
Worcester Heatslave 20/25-RSO-GB-L Oil Combi Non-Condensing Oil 82.5%
Worcester Heatslave 20/25RS Non-Condensing Oil 70.0%
Worcester Heatslave 26/32-OSO-GB Oil Combi Non-Condensing Oil 83.4%
Worcester Heatslave 26/32-RSO-GB Oil Combi Non-Condensing Oil 83.4%
Worcester Heatslave 9.24bf Non-Condensing Gas 65.0%
Worcester Heatslave 9.24of Non-Condensing Gas 65.0%
Worcester Heatslave 9.24rsf Non-Condensing Gas 70.0%
Worcester Heatslave highflow3.5rsf Non-Condensing Gas 72.0%
Worcester Heatslave highflow4.5bf Non-Condensing Gas 65.0%
Worcester Heatslave highflow4.5of Non-Condensing Gas 65.0%
Worcester Heatslave highflowbf Non-Condensing Gas 65.0%
Worcester Heatslave highflowof Non-Condensing Gas 65.0%
Worcester Heatslave juniorbf Non-Condensing Gas 65.0%
Worcester Heatslave juniorof Non-Condensing Gas 65.0%
Worcester Heatslave senior12bf Non-Condensing Gas 65.0%
Worcester Heatslave senior12of Non-Condensing Gas 65.0%
Worcester Heatslave senior15bf Non-Condensing Gas 65.0%
Worcester Heatslave senior15of Non-Condensing Gas 65.0%
Worcester Heatslave senior6bf Non-Condensing Gas 65.0%
Worcester Heatslave senior6of Non-Condensing Gas 65.0%
Worcester High Flow 400 BF Non-Condensing Gas 75.9%
Worcester Highflow 400 Electronic BF BF Non-Condensing Gas 80.0%
Worcester Highflow 400 Electronic OF OF Non-Condensing Gas 78.5%
Worcester Highflow 400 Electronic RSF RSF Non-Condensing LPG 80.3%
Worcester Highflow 400 OF Non-Condensing Gas 75.2%
Worcester Highflow 400 RSF Non-Condensing Gas 79.2%

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