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Worcester Bosch

Our Worcester Bosch boiler range

As part of the Bosch Group, Worcester Bosch boilers are designed and built to exacting standards and constructed with only the highest quality materials, to provide the levels of quality and service that you would expect from a brand within the Bosch Group. Every single Worcester boiler is rigorously tested before it leaves the factory.

29CDi Classic
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

12.3

Output kW

7.7-30.0

Energy Rating A
34CDi Classic
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

14.3

Output kW

7.7-30.0

Energy Rating A
38CDi Classic
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

16.4

Output kW

9.4-30.0

Energy Rating A
42CDi Classic
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

17.2

Output kW

9.4-30.0

Energy Rating A
28CDi Compact
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

11.4

Output kW

7.03-24.0

Energy Rating A
32CDi Compact
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

13.1

Output kW

7.03-24.0

Energy Rating A
36CDi Compact
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

14.7

Output kW

7.03-24.0

Energy Rating A
25Si Compact
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

10.2

Output kW

7.03-24.0

Energy Rating A
30Si Compact
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

12.3

Output kW

7.03-24.0

Energy Rating A
25i
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

10.2

Output kW

8.2-24.0

Energy Rating A
30i
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

12.3

Output kW

8.2-24.0

Energy Rating A
Highflow 440CDi
Dimensions

H: 850

W: 600

D: 600

Flow rate, Ltr per min

20

Output kW

7.4-29.2

Energy Rating A
Highflow 550CDi
Dimensions

H: 850

W: 600

D: 600

Flow rate, Ltr per min

25

Output kW

9.7-30.6

Energy Rating A
30CDi Classic System
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

N/A

Output kW

7.7-30.0

Energy Rating A
35CDi Classic System
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

N/A

Output kW

7.7-34.0

Energy Rating A
9i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

3.1-9.2

Energy Rating A
12i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

3.1-12.2

Energy Rating A
18i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

4.6-15.3

Energy Rating A
21i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

4.6-18.4

Energy Rating A
24i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

7.2-21.6

Energy Rating A
27i System
Dimensions

H: 710

W: 400

D: 330

Flow rate, Ltr per min

N/A

Output kW

7.2-24.6

Energy Rating A
27i System
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

N/A

Output kW

7.03-27.0

Energy Rating A
30i System
Dimensions

H: 690

W: 390

D: 280

Flow rate, Ltr per min

N/A

Output kW

7.03-30.0

Energy Rating A
30CDi Classic Regular
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

N/A

Output kW

7.7-30.0

Energy Rating A
40CDi Classic Regular
Dimensions

H: 760

W: 440

D: 360

Flow rate, Ltr per min

N/A

Output kW

9.4-40.8

Energy Rating A
12Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

4.0-12.0

Energy Rating A
15Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

5.0-15.0

Energy Rating A
18Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

6.0-18.0

Energy Rating A
24Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

8.0-24.0

Energy Rating A
27Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

7.03-27.0

Energy Rating A
30Ri
Dimensions

H: 600

W: 390

D: 270

Flow rate, Ltr per min

N/A

Output kW

7.03-30.0

Energy Rating A
FS 30CDi Regular
Dimensions

H: 850

W: 400

D: 600

Flow rate, Ltr per min

N/A

Output kW

7.7-30.0

Energy Rating A
FS 42 CDi Regular
Dimensions

H: 850

W: 400

D: 600

Flow rate, Ltr per min

N/A

Output kW

9.6-40.8

Energy Rating A
Which Best Buy

In the last boiler survey in Which? Magazine (2015), Worcester Bosch were awarded Best Buys for their entire Greenstar range of gas boilers (33 models in total); and they are the only boiler manufacturer to achieve a Which? Best Buy for 6 consecutive years.

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