New Boiler Installation in Richmond upon Thames

Gas Safe registered & insuredHonest triage before we dispatchG3 certified for unvented cylindersFixed quotes after a proper survey

Swapping like-for-like — combi for combi in the same spot — is the economical end of the range; relocating the boiler, converting from a cylinder system to a combi, or upsizing for a loft conversion moves the price up. We'll always show you which parts of the quote are which.

Qualified for gas: Boiler Installation & Replacement in Richmond upon Thames, London is assigned only to Gas Safe registered engineers, as the law requires for every gas appliance in the UK. Registration is checked against the Gas Safe Register before a job goes out, and you can repeat that check yourself from the ID card at the door.

Richmond upon Thames heating notes: Richmond's water is hard, and the borough's larger family houses — often with multiple bathrooms and unvented systems — give scale plenty of equipment to work on. Richmond upon Thames is dominated by substantial Victorian and Edwardian family homes from Kew to Teddington, many extended and re-plumbed in layers, plus riverside properties where flood-aware heating decisions matter. Mains supply here is managed by Thames Water.

What a new boiler costs

National bands, installed: a like-for-like combi swap typically £1,800–£2,800; converting a cylinder system to a combi £2,500–£4,000; a system boiler with unvented cylinder £2,800–£4,500 depending on cylinder size. Within each band, the boiler's brand tier, the warranty length, flue complexity and any pipework upgrades move the number. Every Richmond upon Thames quote itemises those elements so you can see exactly what you're paying for — and what you could trim.

Combi, system or heat-only — the honest steer

Combi boilers heat water on demand — no cylinder, no tank, ideal for homes with one bathroom and decent mains flow. System boilers feed an unvented cylinder: better for two-plus bathrooms running simultaneously, at the cost of cylinder space. Heat-only (conventional) boilers with tanks suit some older systems where wholesale conversion isn't worth it. The deciding facts are your bathroom count, mains flow rate and airing-cupboard real estate — not fashion.

Warranties, paperwork and aftercare

Manufacturer warranties on new boilers run 5–12 years depending on brand and installer accreditation — but they're conditional: annual servicing by a Gas Safe engineer, recorded. Your installer should register the warranty, notify building control (you'll receive the certificate), and complete the benchmark section. Keep all three documents with the house papers; missing paperwork is a genuine friction point in Richmond upon Thames conveyancing.

Pricing for boiler installation & replacement in Richmond upon Thames tracks the national bands closely, with the usual local caveats: access difficulty in older Mortlake properties, parts availability for the boiler families common here, and the seasonal demand curve that makes autumn bookings cheaper and calmer than January ones. You will always see the price structure before an engineer travels.

Frequently asked questions

How much is a new boiler in Richmond upon Thames?

Most Richmond upon Thames combi replacements land between £1,800 and £2,800 installed; conversions and system-boiler installs range higher, typically £2,500–£4,500. Your fixed quote follows a survey — the quote form on this page captures what the surveyor needs to price accurately.

How long does a boiler installation take?

A like-for-like combi swap: usually one day. A conversion from cylinder system to combi, or a relocation: two to three days. You'll be told the expected duration with the quote, and the heating is commissioned and working before the installer leaves.

Which boiler brand should I choose?

The honest answer: any of the major brands at the right size, installed well, will serve you. Differences lie in warranty length, parts availability and price tier. Our brand hub compares them factually — and a good installation matters more than the badge.

What size boiler do I need?

Size follows demand, not house pride: bedroom and bathroom count, radiator count and mains flow rate determine it. Oversizing wastes money and cycles the boiler; undersizing disappoints at the shower. The quote survey calculates it — our sizing guide explains the logic.