Glow-worm Boilers Kingston | Energy & Ultimate Install & Repair

Glow-worm models we install

Energy — the core Glow-worm combi range, offering 7–10 year warranties depending on where it's fitted.

Ultimate3 — a step-up range with a longer warranty and higher-spec build.

Easicom 3 — a lower-cost combi that's popular for straight swap-outs in flats.

Betacom4 — a compact combi built for tight kitchen installs.

F1 low water pressure — repressurise, check expansion vessel, find any slow leak.

F22 fan / flue restriction — a common wear item.

F28 ignition lockout — usually a spark electrode or gas valve.

Diverter valve failure — very fixable, and parts are always in stock.

Glow-worm Energy and Ultimate3 typically ship with 7–10 year warranties. Annual servicing with genuine parts keeps the warranty valid.

Easicom 3 combi swap: £1,900–£2,400 supplied and fitted.

Energy 30kW combi with filter, flush and controls: £2,300–£2,900.

Ultimate3 with 10-year warranty: £2,600–£3,200.

Is Glow-worm as good as Vaillant?

Glow-worm sits below Vaillant in the same group but shares many key components — great value with reliable parts backup.

How long is the Glow-worm warranty?

Typically 7–10 years depending on model, with annual servicing.

Are Glow-worm boilers good for landlords?

Yes — sensible price, strong warranty and easy access to service parts make them a popular landlord choice.

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

Gas Safe Registered

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