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Boiler range

Industry leading Worcester Bosch and Valliant boilers

All boilers are A-rated energy efficient

Worcester Bosch Badge which 170x 94

For the seventh year running, the entire range of Worcester Greenstar gas boilers got top marks in their reliability survey and has been awarded Best Buy status in the 2016/17 Which? annual boiler report (September 2016).
Combination boilers

 

Model

 

Dimensions in mm  

(height x width x depth)

Maximum flow rate 

(litres per minute)

Output 

(kW)

Efficiency rating 

(all A-rated)

Greenstar 42CDi Classic 680x390x280 15 9.6 - 40.8 90.2%
Greenstar 38CDi Classic 680x390x280 14 9.4 - 30 90.2%
Greenstar 34CDi Classic 680x390x280 12 7.7 - 30 90.1%
Greenstar 29CDi Classic 680x390x280 11 7.7 - 30 90.1%
Greenstar 36CDi Compact 680x390x280 14.7 7.03 - 24 90.5%
Greenstar 32CDi Compact 680x390x280 13.1 7.03 - 24 90.5%
Greenstar 28CDi Compact 680x390x280 11.4 7.03 - 24 90.5%
Greenstar 30Si Compact 680x390x280 12.3 7 - 24.6 90.5%
Greenstar 25Si Compact 680x390x280 10.2 7.03 - 24 90.5%
Greenstar Highflow 550CDi 850x600x600 25 7.97 - 30.6 90.4%
Greenstar Highflow 440CDi 850x600x600 20 7.4 - 29.2 90.4%
Conventional boilers
Model Dimensions in mm  

(height x width x depth)

Output 

(kW)

Efficiency rating 

(all A-rated)

Greenstar 40CDi Classic Regular 750x440x360 9.4 - 40.8 90.1%
Greenstar 30CDi Classic Regular 750x440x360 7.7 - 30 90.2%
Greenstar 30Ri 590x390x271 7.02 - 30 90.3%
Greenstar 27Ri 590x390x271 7.03 - 24 90.3%
Greenstar 24Ri 590x390x270 8 - 24 90.2%
Greenstar 18Ri 590x390x270 6 - 18 90.1%
Greenstar 15Ri 590x390x270 5 - 15 90.1%
Greenstar 12Ri 590x390x270 4 - 12 90.1%
Greenstar FS 42CDi Regular 850x400x600 9.6 - 40.8 90.3%
Greenstar FS 30CDi Regular 850x400x600 7.7 - 30 90.5%
Greenstar 35CDi Classic System 760x440x360 7.7 - 34 90.1%
Greenstar 30CDi Classic System 760x440x360 7.7 - 30 90.2%
Greenstar 30i System 710x400x331 7.03 - 30 90.3%
Greenstar 27i System 710x400x331 7.03 - 24 90.3%
Greenstar 24i System 710x400x330 7.2 - 24 90.2%
Greenstar 18i System 710x400x330 5 - 15 90.1%
Greenstar 15i System 710x400x330 5 - 15 90.1%
Greenstar 12i System 710x400x330 4 - 12 90.1%

Vaillant boilersBadge which 170x 94

Vaillant is an international, family owned company with a heritage of more than 140 years in providing customers with energy saving and easy to operate solutions for heating and hot water. Vaillant’s range of ecoTEC pro and plus high efficiency domestic gas boilers have been awarded Which? Best Buy 2016. The finest German engineering and British manufacturing are combined to give you outstanding performance and long lasting reliability from your heating system.
Combination boilers

 

Model 

 

Dimensions in mm  

(height x width x depth)

Maximum flow rate 

(litres per minute)

Output 

(kW)

Efficiency rating 

(all A-rated)

ecoTEC pro 24 720x440x338 9.8 5.7 - 19.9 89.1%
ecoTEC pro 28 720x440x338 12.4 6.9 - 25.7 89.3%
ecoTEC plus 824 720x440x338 9.8 4.2 - 20.4 89.1%
ecoTEC plus 831 720x440x338 12.4 5.7 - 25.7 89.3%
ecoTEC plus 837 720x440x406 15.6 7.1 -30.1 89.3%
ecoTEC exclusive 832 800x480x450 12.9 11 -29.3 91.9%
ecoTEC exclusive 838 800x480x450 15.2 12.1 -32.4 91.9%
Conventional boilers

 

Model

 

Dimensions in mm  

(height x width x depth)

Output 

(kW)

Efficiency rating 

(all A-rated)

ecoTec plus 415 610x375x340 5 - 15 90.5%
ecoTec plus 418 610x375x340 5 - 18.6 90.5%
ecoTec plus 428 610x375x340 5.3 - 28.2 90.6%
ecoTec plus 438 610x375x340 6.3- 38 90.8%
ecoTec plus 612 720x440x338 3.3- 12.9 90.6%
ecoTec plus 615 720x440x338 3.3- 16.1 90.9%
ecoTec plus 618 720x440x338 4.2- 19.3 90.9%
ecoTec plus 624 720x440x338 5.7- 25.7 90.7%
ecoTec plus 630 720x440x372 6.4- 32.1 90.6%
ecoTec plus 637 720x440x406 7.1- 39.6 91.2%