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If your emergency is covered by your home insurance, and most are, we provide an insurance-grade report at no cost, and we'll deal directly with your insurer on your behalf. Restoration of your property to its pre-incident state is 100% free of charge when the claim is approved. You don't pay a penny out of pocket. Full details
A full central-heating replacement is a different proposition to a boiler swap. The boiler is one component of many, and changing only the boiler on a tired system buys you a year or two before the same root problems return: sludged radiators that never warm through, undersized 8mm tails strangling flow upstairs, controls that have not seen a firmware update in a decade, and zoning that does not match how the household uses the building. A multi-day strip-out is exactly the kind of work where travelling out from London makes sense for both sides.
Our standard out-of-area replacement covers a full strip-out and re-pipe (typically 22mm primary flow and return, 15mm drops, 10mm microbore eliminated), 8 to 12 new pressed-steel radiators sized to the heat-loss calculation, a new high-efficiency boiler from Worcester, Vaillant, Viessmann, Ideal, or Baxi, externally-mounted weather-compensation sensors, and an OpenTherm load-compensating control such as Honeywell Evohome, Nest 3rd-gen, or the manufacturer's own modulating thermostat. Two to five days on site is typical for a 3 to 5 bedroom property, scheduled in a single block.
System replacements we travel for
- Period properties with original 8mm or 10mm microbore that has reached the end of its working life.
- Extensions or loft conversions where the existing system was never resized for the new heat load.
- Properties with chronic sludge fouling where a power flush has bought time but not solved the underlying problem.
- Gravity-fed open-vent systems being converted to sealed pressurised systems with new pressure relief and expansion vessels.
- Multi-zone retrofits where the household wants separate upstairs and downstairs control with smart scheduling.
- Conversions from electric storage heaters to wet central heating, including new boiler and full radiator network.
- High-end refurbishments where the heating works dovetail with kitchen, bathroom, and decoration timelines.
- Holiday-home replacements scheduled between letting blocks, where speed and tidiness matter as much as the spec.
How a multi-day heating replacement runs
Eight stages, designed to keep the household functional for as much of the project as physically possible.
- 1
Free phone scope-out
A 10 to 15 minute call to understand the property, the current system, the household's heating priorities, and the planned timing. - 2
On-site survey and heat-loss calculation
A day on site to measure every room, run a per-room heat-loss calculation, scope the new pipe routes, photograph everything, and confirm boiler position and flue route. - 3
Written quote with day count and mileage
A line-by-line quote: day rate per engineer, day count, mileage from the nearest M25 junction at £0.45 per mile, radiators, boiler, controls, consumables, and a fixed total. - 4
Day one: strip-out
System drained, radiators removed, old pipework lifted. Floors and decoration protected with hard board and dust sheets throughout. - 5
Days two to three: first fix
New 22mm and 15mm copper or multilayer composite pipe run, drops to each radiator, expansion vessel, filling loop, and condensate route installed. - 6
Days three to four: second fix
New boiler hung and gas-tested, radiators hung and connected on TRVs, magnetic filter on the return, weather-compensation sensor mounted, smart controller paired. - 7
Commissioning, balance, and inhibitor dose
Working-pressure test, vent and bleed, OpenTherm load-compensation paired and tested, lockshields balanced for design flow, and a BS 7593 inhibitor dose. - 8
Handover, registration, and Part L notice
Benchmark book completed, manufacturer warranty registered, smart-control walkthrough, and a Part L notification submitted under our Gas Safe competent-person scheme.