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Worcester Bosch Greenstar 4000 Gas Combi Boiler White
Worcester Bosch

Worcester Bosch Greenstar 4000 Gas Combi Boiler White (763PR)

Order by 12pm to receive your order next working day. Orders placed after 12pm will be delivered within 2 working days. Delivery available to mainland GB only, (offshore and Northern Ireland is not available). We cannot accept the return of unwanted boilers if the box/packaging has been opened (your statutory rights are not affected).

Boiler includes long flue lengths (up to 12m with 60/100mm flues) for flexibility of siting and a 500ml integrated condensate siphon to reduce the risk of freezing, together with features of the existing Greenstar i. Pre-piping jig with rear piping as standard enables SimpleSwitch to previous Worcester i Junior and Si models. Fast and easy installation, commissioning and servicing.

  • Max. Domestic Hot Water Output: 25kW
  • Max. Central Heating Output: 24kW
  • Aluminium Silicon Heat Exchanger
  • Top Flue Outlet
  • Compatible with Solar Panels
  • 5 Year Manufacturer’s Guarantee (Registration Required, T&Cs Apply)
  • 81893BTU
  • Backlit LCD Full Colour Display
More Info

View all: Worcester Bosch Boilers

£1298.97Inc Vat

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BTU81893 BTU
Boiler Depth310 mm
Boiler Height724 mm
Boiler TypeCombi
Boiler Width400 mm
BrandWorcester Bosch
CALC - Fuel TypeGas
Compatible with Solar PanelsCompatible with Solar Panels
Display TypeBacklit LCD Full Colour Display
Energy Rating (Heating)A
Energy Rating (Water)A
Filling Loop SuppliedFilling Loop Not Supplied
Fitting RequirementsMust be Fitted by a Qualified Installer
Fixing Jig SuppliedFixing Jig Supplied
Flow Rate (Ltr/Min)10.2 Ltr/min
Flue Connection Diameter60/100 mm
Flue Outlet PositionTop Flue Outlet
Flue SuppliedFlue Not Supplied
Frost ProtectionFrost Protection
Fuel TypeGas
Indoor/Outdoor UsageIndoor
LPG Conversion Kit SuppliedLPG Conversion Kit Available Separately
Manufacturer Guarantee5 Year Manufacturer’s Guarantee (Registration Required, T&Cs Apply)
Max. Heat Output CH (Pn)24 kW
Max. Heat Output DHW (Pn)25 kW
Model Name/NoGreenstar 4000
Pack Size1
Parent ColourWhite
Pieces in Pack/Case1
Product Returns NoteWe cannot accept the return of unwanted boilers if the box/packaging has been opened (your statutory rights are not affected).
Product TypeBoiler
Range NameGreenstar 4000
SAP Seasonal Efficiency89.4 %
Sound Pressure Level41.4 dBA
Suitable for Underfloor HeatingSuitable for Underfloor Heating
Supplier Manufacturer Helpline0330 1239669
Temperature Range (Heating)30-82 °C
Temperature Range (Water)35-60 °C
Total Product Weight34.6 kg

Product Contents

Fixing jig, siphon, hardware pack

Delivered direct from our suppliers in the number of working days stated on the delivery button

Direct from our supplier delivery restrictions

Geographic restrictions apply, check your postcode below to see if any apply to you. For some locations delivery may take longer than the specified delivery time, and we can not currently offer delivery to offshore addresses.

Please ensure we have your mobile phone number when you order so we can keep you updated with deliveries.


Please note - If you wish to return this item you will need to call us on our freephone number 03330 112 112 to arrange a free collection.


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