Worcester Bosch
Worcester Bosch Circulating Pump UPM3 15-75 CHG 8737709169
Worcester Bosch UPM3 15-75 CHG circulating pump, part 8737709169, for Greenstar 8000 Life Combi boilers and other Worcester Bosch models.
At a glance
- Part type: Pumps
- Also known as 2249274
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£534.32
£445.27 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The UPM3 15-75 CHG is a circulating pump manufactured by Worcester Bosch for use in its condensing gas boilers. It moves water around the primary heating circuit, maintaining flow through the heat exchanger and out to the radiators and hot water circuit. It is supplied as a Worcester Bosch spare part under part number 8737709169.
Signs this part needs replacing
- No heating or hot water, with the boiler firing but the primary circuit failing to circulate
- The pump running hot, noisy or humming without moving water
- Radiators staying cold at the top or across the whole system while the boiler reaches temperature quickly
- Boiler lockout or a flow-related fault code appearing on the display
- Visible leakage, corrosion or a seized impeller at the pump body
Before you order
- Check the GC number or serial number on the appliance data badge against the compatibility list to confirm the pump matches your model
- Confirm the pump currently fitted carries the UPM3 15-75 CHG designation, as Worcester Bosch uses more than one pump across its ranges
- Check whether a gasket or seal kit is needed for the pump connection before fitting
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Pumps |
|---|
Compliance
| Manufacturer part number (MPN) | 8737709169 |
|---|---|
| Barcode / EAN | 8737709169 |
| GPC classification | Pumps |
| Alternative numbers | 2249274 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 30 C LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 30 C NG | 47-800-18 | 47-800-18 | — | — |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 35 C LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 35 C NG | 47-800-17 | 47-800-17 | — | — |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 40 C LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 40 C NG | 47-800-16 | 47-800-16 | — | — |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 45 C LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 45 C NG | 47-800-15 | 47-800-15 | — | — |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 50 C LPG | — | — | — | |
| WORCESTER GREENSTAR 8000 LIFE COMBI GR8300iW 50 C NG | 47-800-14 | 47-800-14 | — | — |
Showing 10 of 156 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
WORCESTER appliance manual — GREENSTAR 8000 LIFE COMBI GR8300iW 30 C LPG, GREENSTAR 8000 LIFE COMBI GR8300iW 30 C NG (GC 47-800-18), GREENSTAR 8000 LIFE COMBI GR8300iW 35 C LPG, GREENSTAR 8000 LIFE COMBI GR8300iW 35 C NG (GC 47-800-17), GREENSTAR 8000 LIFE COMBI GR8300iW 40 C LPG, GREENSTAR 8000 LIFE COMBI GR8300iW 40 C NG (GC 47-800-16), GREENSTAR 8000 LIFE COMBI GR8300iW 45 C LPG, GREENSTAR 8000 LIFE COMBI GR8300iW 45 C NG (GC 47-800-15), GREENSTAR 8000 LIFE COMBI GR8300iW 50 C LPG, GREENSTAR 8000 LIFE COMBI GR8300iW 50 C NG (GC 47-800-14), GREENSTAR LIFE GR8300iW 30 C LPG, GREENSTAR LIFE GR8300iW 30 C NG (GC 47-800-18), GREENSTAR LIFE GR8300iW 35 C LPG, GREENSTAR LIFE GR8300iW 35 C NG (GC 47-800-17), GREENSTAR LIFE GR8300iW 40 C LPG, GREENSTAR LIFE GR8300iW 40 C NG (GC 47-800-16), GREENSTAR LIFE GR8300iW 45 C LPG, GREENSTAR LIFE GR8300iW 45 C NG (GC 47-800-15), GREENSTAR LIFE GR8300iW 50 C LPG, GREENSTAR LIFE GR8300iW 50 C NG (GC 47-800-14)
manualmanualWORCESTER appliance manual — GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 30 R NG (GC 41-406-98), GREENSTAR 8000 LIFE REGULAR GR8300iW 35 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 35 R NG (GC 41-406-97), GREENSTAR 8000 LIFE REGULAR GR8300iW 40 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 40 R NG (GC 41-406-96), GREENSTAR 8000 LIFE REGULAR GR8300iW 45 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 45 R NG (GC 41-406-95), GREENSTAR 8000 LIFE REGULAR GR8300iW 50 R LPG, GREENSTAR 8000 LIFE REGULAR GR8300iW 50 R NG (GC 41-406-94), GREENSTAR LIFE GR8300iW 30 R LPG, GREENSTAR LIFE GR8300iW 30 R NG (GC 41-406-98), GREENSTAR LIFE GR8300iW 35 R LPG, GREENSTAR LIFE GR8300iW 35 R NG (GC 41-406-97), GREENSTAR LIFE GR8300iW 40 R LPG, GREENSTAR LIFE GR8300iW 40 R NG (GC 41-406-96), GREENSTAR LIFE GR8300iW 45 R LPG, GREENSTAR LIFE GR8300iW 45 R NG (GC 41-406-95), GREENSTAR LIFE GR8300iW 50 R LPG, GREENSTAR LIFE GR8300iW 50 R NG (GC 41-406-94)
manualmanualWORCESTER appliance manual — GREENSTAR 8000 LIFE SYSTEM GR8300iW 30 S LPG, GREENSTAR 8000 LIFE SYSTEM GR8300iW 30 S NG (GC 41-406-91), GREENSTAR 8000 LIFE SYSTEM GR8300iW 35 S LPG, GREENSTAR 8000 LIFE SYSTEM GR8300iW 35 S NG (GC 41-406-90), GREENSTAR LIFE GR8300iW 30 S LPG, GREENSTAR LIFE GR8300iW 30 S NG (GC 41-406-91), GREENSTAR LIFE GR8300iW 35 S LPG, GREENSTAR LIFE GR8300iW 35 S NG (GC 41-406-90)
manualmanualWORCESTER appliance manual — GREENSTAR 8000+ STYLE COMBI GR8700iW 30 C LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 30 C NG (GC 47-800-03), GREENSTAR 8000+ STYLE COMBI GR8700iW 30 CB LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 30 CB NG (GC 47-406-97), GREENSTAR 8000+ STYLE COMBI GR8700iW 35 C LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 35 C NG (GC 47-800-02), GREENSTAR 8000+ STYLE COMBI GR8700iW 35 CB LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 35 CB NG (GC 47-406-96), GREENSTAR 8000+ STYLE COMBI GR8700iW 40 C LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 40 C NG (GC 47-800-01), GREENSTAR 8000+ STYLE COMBI GR8700iW 40 CB LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 40 CB NG (GC 47-406-95), GREENSTAR 8000+ STYLE COMBI GR8700iW 45 C LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 45 C NG (GC 47-406-99), GREENSTAR 8000+ STYLE COMBI GR8700iW 45 CB LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 45 CB NG (GC 47-406-94), GREENSTAR 8000+ STYLE COMBI GR8700iW 50 C LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 50 C NG (GC 47-406-98), GREENSTAR 8000+ STYLE COMBI GR8700iW 50 CB LPG, GREENSTAR 8000+ STYLE COMBI GR8700iW 50 CB NG (GC 47-406-93), GREENSTAR 8000+ STYLE SYSTEM GR8700iW 30 S LPG, GREENSTAR 8000+ STYLE SYSTEM GR8700iW 30 S NG (GC 41-406-87), GREENSTAR 8000+ STYLE SYSTEM GR8700iW 30 SB LPG, GREENSTAR 8000+ STYLE SYSTEM GR8700iW 30 SB NG (GC 41-406-83), GREENSTAR 8000+ STYLE SYSTEM GR8700iW 35 S LPG, GREENSTAR 8000+ STYLE SYSTEM GR8700iW 35 S NG (GC 41-406-86), GREENSTAR 8000+ STYLE SYSTEM GR8700iW 35 SB LPG, GREENSTAR 8000+ STYLE SYSTEM GR8700iW 35 SB NG (GC 41-406-82), GREENSTAR STYLE GR8700iW 30 C LPG, GREENSTAR STYLE GR8700iW 30 C NG (GC 47-800-03), GREENSTAR STYLE GR8700iW 30 CB LPG, GREENSTAR STYLE GR8700iW 30 CB NG (GC 47-406-97), GREENSTAR STYLE GR8700iW 30 S LPG, GREENSTAR STYLE GR8700iW 30 S NG (GC 41-406-87), GREENSTAR STYLE GR8700iW 30 SB LPG, GREENSTAR STYLE GR8700iW 30 SB NG (GC 41-406-83), GREENSTAR STYLE GR8700iW 35 C LPG, GREENSTAR STYLE GR8700iW 35 C NG (GC 47-800-02), GREENSTAR STYLE GR8700iW 35 CB LPG, GREENSTAR STYLE GR8700iW 35 CB NG (GC 47-406-96), GREENSTAR STYLE GR8700iW 35 S LPG, GREENSTAR STYLE GR8700iW 35 S NG (GC 41-406-86), GREENSTAR STYLE GR8700iW 35 SB LPG, GREENSTAR STYLE GR8700iW 35 SB NG (GC 41-406-82), GREENSTAR STYLE GR8700iW 40 C LPG, GREENSTAR STYLE GR8700iW 40 C NG (GC 47-800-01), GREENSTAR STYLE GR8700iW 40 CB LPG, GREENSTAR STYLE GR8700iW 40 CB NG (GC 47-406-95), GREENSTAR STYLE GR8700iW 45 C LPG, GREENSTAR STYLE GR8700iW 45 C NG (GC 47-406-99), GREENSTAR STYLE GR8700iW 45 CB LPG, GREENSTAR STYLE GR8700iW 45 CB NG (GC 47-406-94), GREENSTAR STYLE GR8700iW 50 C LPG, GREENSTAR STYLE GR8700iW 50 C NG (GC 47-406-98), GREENSTAR STYLE GR8700iW 50 CB LPG, GREENSTAR STYLE GR8700iW 50 CB NG (GC 47-406-93)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.