Worcester Bosch mixing valve 87183103900

Genuine Worcester Bosch mixing valve for the Greensource 6kW, 7kW and 9.5kW air/water heat pump range.

At a glance

Part type: mixing valve
Also known as 1022458

Manufacturer part no.

87183103900

Showing prices

£487.22

£406.02 ex. VAT · VAT at 20%

Available to order · 7 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 team Send a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

This is Worcester Bosch's mixing valve, fitted to the Greensource air/water heat pump range. It blends flow temperatures to deliver the correct water temperature to the heating circuit.

Signs this part needs replacing

Inconsistent or incorrect flow temperature to the heating circuit
Appliance locks out on a temperature or flow-related fault
Valve is noisy, sticking or fails to blend correctly
Leaking or weeping from the valve body

Before you order

Match the part number printed on your existing valve before ordering
Isolate electrical power and water supplies before removal
Have this fitted by a competent, qualified engineer

Can't find yours? Call 01302 279234

Make	Model / assembly	Years	Fitment
WORCESTER GREENSOURCE 6KW AIR/WATER HEATPUMP	—	—	—
WORCESTER GREENSOURCE 7KW AIR/WATER HEATPUMP	—	—	—
WORCESTER GREENSOURCE 9.5KW AIR/WATER HEATPUMP	—	—	—

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.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.

Send a technical question Call the technical team

Barcode / EAN	4047416831787
Alternative numbers	1022458