How much does a new boiler cost?

Most combi swaps in London fall between £1,895 and £3,400 fully installed, depending on brand and complexity.

How long does installation take?

Most combi-for-combi swaps are completed in a single day. System or back-boiler conversions take 2–3 days.

Yes — 0% APR over 24 months and longer plans subject to status, via our partner lender.

Services

Gas Safe engineers covering boilers, plumbing, heating, emergencies and landlord compliance across London.

A-rated combi & system boilers, up to 12-year warranty.

Same-day diagnostics for every major brand.

Leaks, taps, toilets, bathroom installs and drainage.

Radiators, power flushing and smart thermostats.

Engineer on-site within 90 minutes across central London.

CP12 certificates from £75 — booked online.