Worcester Bosch Boilers Kingston | Install & Repair KT/TW

Worcester Bosch models we install

Greenstar 8000 Life and 8000 Style — premium combi and system boilers with high hot-water flow rates, ideal for larger KT and TW family homes with multiple bathrooms.

Greenstar 4000 — the mid-range replacement for the long-running CDi Compact, with a smart weather-compensating control option and a strong 10-year warranty.

Greenstar 2000 and 30i — cost-effective combi options for smaller flats around Kingston, Teddington and Twickenham where budget matters and hot-water demand is moderate.

Greenstar CDi Classic system and regular boilers — matched with Greenstore unvented cylinders for larger properties around Cobham, Weybridge and Esher.

Worcester Bosch repair — common faults we fix

EA fault codes (flame loss / ignition lockout) on Greenstar combis, usually a spark electrode, gas valve or condensate trap issue.

D1 fault codes indicating a return sensor fault — often a sludge / poor circulation symptom that also calls for a power flush.

Low pressure and leaks from the auto air vent, AAV cap or expansion vessel — we recharge or replace the vessel and retest.

Diverter valve failure causing hot water but no heating (or vice versa) — a common issue on older Greenstar CDi and Highflow units.

Warranty, servicing and Accredited Installer status

Worcester Bosch offers up to a 12-year warranty on Greenstar combis when fitted by an Accredited Installer and serviced annually. We handle the registration on installation and can take over annual servicing from any previous installer.

An annual service is essential to keep the warranty valid — we carry out the full Worcester Bosch service checklist and complete Benchmark records at every visit.

Typical Worcester Bosch installation prices in KT/TW

Straight combi swap (Greenstar 2000 / 30i, like-for-like): £2,400–£3,000 supplied and fitted.

Greenstar 4000 combi with system upgrade (magnetic filter, flush, new controls): £2,900–£3,600.

Greenstar 8000 Life combi in a larger family home with pipework upgrades: £3,600–£4,500.

System boiler + Greenstore unvented cylinder install: quoted after home survey — typically £4,500–£6,500 depending on the cylinder size and controls.

Get a fixed-price Worcester Bosch quote — free home survey, no obligation.

Call 07932 898534

Frequently asked questions

Are you Worcester Bosch Accredited Installers?

Yes — we fit Greenstar boilers to Worcester Bosch's specification and register every installation for the extended warranty on your behalf.

How long is the Worcester Bosch warranty?

Up to 12 years on Greenstar combis fitted by an Accredited Installer and serviced annually. Standard installer warranties range from 7 to 10 years depending on model.

Can you take over servicing on a boiler someone else installed?

Yes — we service every Worcester Bosch model. Bring us your original Benchmark log and we'll continue annual servicing to maintain the warranty.

Which Worcester Bosch is best for a two-bathroom KT home?

A Greenstar 4000 30kW or Greenstar 8000 Life 35kW usually suits a two-bathroom property. Larger homes with high simultaneous demand often do better with a system boiler and unvented cylinder.

Boiler Installation in your area

Book boiler installation in any KT or TW town — every location has its own local page.

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Qualified & certified engineers

Highly Rated Locally

Reviews from KT & TW customers

Genuinely Local

Engineers based in the area

Same-Day Availability

Where possible, for urgent jobs

Worcester Bosch Boilers in Kingston & KT/TW