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Vaillant approved installer on the team, Gas Safe registered engineers on every visit, and a written fixed price before you commit. Extended parts warranty available on qualifying Vaillant components — including the magnetic filter — thanks to our approved-installer status.
Vaillant approved · Gas Safe · Fixed-price installs · 2-year manufacturer's guarantee
What it is
Domestic and commercial boiler installations across combi, system and heat-only units. Full system upgrades, swaps and relocations — specialising in Vaillant condensing installations.
Who it's for
Homeowners replacing an ageing boiler, landlords upgrading rental stock ahead of an EPC or CP12, and commercial premises that need dependable hot water and heat.
When you need it
When your boiler is 12+ years old, when repair bills stack up, on a total breakdown, or when a renovation has the pipework already exposed and it's cheaper to swap now than later.
Why use a professional
A boiler swap done properly pays back in efficiency, warranty length and — critically — safety. A Vaillant approved installer secures manufacturer-backed warranty extensions that only accredited installers can offer.
The cheapest time to deal with a plumbing or heating fault is almost always now. Water damage, gas issues and system stress compound quickly — the invoice grows with them.
If you leave it
Common DIY mistakes
You get the same sequence every time — so there are no surprises on the invoice and nothing missed on the job sheet.
We measure hot-water demand, count radiators, check flue routes and mains gas capacity.
Boiler model, ancillaries, warranty terms and price — in writing, typically 2–3 working days after the visit.
Deposit up front, install date confirmed. Balance due on completion.
Power flush or chemical clean as required, magnetic filter fitted, controls upgraded where appropriate.
Boiler fitted to manufacturer spec, benchmarked, commissioned and registered with the manufacturer and Gas Safe.
You get the benchmark, the Gas Safe notification, and the manufacturer warranty paperwork. We talk you through controls before we leave.
Boiler installations are quoted fixed — you know the number before we start.
One of our engineers holds Vaillant approved-installer status, unlocking extended parts warranty on qualifying components.
Every new boiler installation carries a 2-year manufacturer's guarantee as standard.
We size on real demand, not the sticker on your old unit — so hot water actually keeps up in winter.
Magnetic filter, inhibitor and controls included on standard installs to protect the investment.
Every install notified through Gas Safe. You get the paperwork; building control and insurers stay happy.
A boiler is the most expensive appliance most homes will ever buy. The install decisions matter as much as the box itself — here's the detail behind our quotes.
Combis suit small-to-mid homes with a single main bathroom and modest simultaneous demand. System boilers with an unvented cylinder are the right answer for larger homes and two-bathroom lifestyles. Heat-only (regular) boilers make sense when tanks and cylinders are already correctly sized and in good condition and you want minimum disruption.
Vaillant's ecoTEC range is well-supported in the UK, parts are readily available, and — because one of our engineers is a Vaillant approved installer — you qualify for extended warranty terms on parts like the magnetic filter (an additional 2 years, on qualifying components) that only approved installers can offer. We fit other quality manufacturers too where they're the right fit.
Every install starts with a decision on system cleanliness. Where the existing system is loaded with sludge, a power flush is quoted separately. On cleaner systems, a chemical clean plus a magnetic filter and fresh inhibitor is enough. Either way — no protection, no warranty, no exceptions.
Modern condensing boilers only hit efficiency figures with sensible controls. We fit programmable thermostats, add or replace TRVs where zoning makes sense, and can integrate smart controls (Vaillant vSMART, Nest, Hive) with correct wiring — not a bodged neutral tap-off.
Nothing here is generic — these are answers we give West London customers every week.
Ask us directlyEvery install is quoted after a free on-site survey. Price depends on model, complexity of pipework, flue route, controls and whether a flush is needed. You get a fixed written price before committing.
A straight combi swap is typically 1 day. A system change (e.g. combi to system + cylinder, or moving the boiler location) usually runs 2–3 days.
A 2-year manufacturer's guarantee as standard. Vaillant installs by our approved installer qualify for extended warranty on certain parts — including additional cover on the magnetic filter.
If it's 12+ years old, or you've had two or more repairs in a year, replacement is usually more cost-effective than continuing to repair. We'll give you an honest opinion during the quote visit.
Yes — removal, safe capping of the old flue and disposal are included in the install price.
A deposit is paid up front and the balance is due on completion. Payment is by bank transfer.
No pressure, no obligation. A Gas Safe engineer visits, scopes the job in person, and puts a written quote in your inbox — usually within 2–3 working days. For emergencies, call the line — it's answered 24/7 by the team, not a call centre.
Vaillant approved · Gas Safe · Fixed-price installs · 2-year manufacturer's guarantee
