New Boiler Installation in Hammersmith & Fulham
Hard Thames Water supply means scale is a fact of life in Hammersmith & Fulham — furred shower heads, tired cartridges and short-lived immersion elements are the borough's background hum. In harder-water areas a scale reducer on the new boiler's supply is cheap insurance for the heat exchanger — some manufacturers require one to honour the full warranty. A good Hammersmith & Fulham quote includes it where the water justifies it.
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.
What happens on installation day
A straight combi swap is typically a one-day job: old boiler drained and removed, new boiler mounted, flue fitted, condensate run, system cleansed and inhibitor added, magnetic filter fitted, controls connected, then commissioning — gas-rate and combustion checks, benchmark record completed, and a walkthrough of the controls. Conversions run two to three days. Water is off for part of the day; heating is live and tested before the installer leaves your Hammersmith & Fulham home.
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 Hammersmith & Fulham conveyancing.
Every boiler installation & replacement job in Hammersmith & Fulham starts with the same discipline: confirm what the customer is actually experiencing, check the system-side basics before assuming the appliance is at fault, and state the price before doing anything. It sounds obvious, and it is precisely what generates the complaints we hear about other firms.
Frequently asked questions
How much is a new boiler in Hammersmith & Fulham?
Most Hammersmith & Fulham 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.