Worcester Bosch
Worcester Bosch Heating Block 30Kw 8737602147
Worcester Bosch heating block, part 8737602147, rated at 30kW for Greenstar 2000 Combi GR2300IW models.
At a glance
- Appliance family: Greenstar 2000 Combi GR2300IW
- Also known as 8905377
£716.18
£596.82 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Worcester Bosch heating block, part 8737602147, is a 30kW heating block assembly used in the Greenstar 2000 Combi GR2300IW appliance family. It forms the primary heat transfer component of the boiler, taking heat from combustion and passing it to the heating and domestic hot water circuits. This is the unit specified by the supplied product name HEATING BLOCK 30KW.
Signs this part needs replacing
- Visible water or staining around the heating block body or its connections
- Repeated pressure loss on the system that cannot be traced to other components
- Kettling, banging or gurgling noises from the heat exchanger during operation
- Reduced heating or hot water output despite the burner running correctly
- Overheat faults or lockouts linked to poor heat transfer at the block
Before you order
- Confirm the appliance model is a Greenstar 2000 Combi GR2300IW variant
- Check the existing part number 8737602147 against the boiler data badge where accessible
- Verify the boiler output rating matches the 30kW rating of this heating block
- Confirm the fuel type (NG or LPG) of the installation against the model listing
Compliance
| Alternative numbers | 8905377 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C LPG | 47-800-27 | 47-800-27 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C NG | 47-800-26 | 47-800-26 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C LPG | 47-800-29 | 47-800-29 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C NG | 47-800-28 | 47-800-28 | — | — |
| WORCESTER GREENSTAR GR2300iW 25 C LPG COMBI | 47-800-27 | 47-800-27 | — | — |
| WORCESTER GREENSTAR GR2300iW 25 C NG COMBI | 47-800-26 | 47-800-26 | — | — |
| WORCESTER GREENSTAR GR2300iW 30 C LPG COMBI | 47-800-29 | 47-800-29 | — | — |
| WORCESTER GREENSTAR GR2300iW 30 C NG COMBI | 47-800-28 | 47-800-28 | — | — |
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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