What you can hold us to
Our guarantees, in plain English.
A new boiler is a big decision, so we make the commitments explicit. Below is exactly what's covered, for how long, and where each promise comes from — the manufacturer, our own workmanship, or the reviews our customers have already written.
Up to a 12-year manufacturer warranty
Every new boiler carries a manufacturer warranty of up to 12 years, and because we're a Worcester Bosch accredited and Vaillant approved installer, we register it for you so it's valid from day one.
Verified: Worcester Bosch Accredited Installer · Vaillant Approved Installer. Manufacturer warranties up to 12 years, registered on installation.
A 5-year workmanship guarantee
The manufacturer covers the boiler; we cover the fitting. Our own workmanship is guaranteed for 5 years (non-insurance backed) — the pipework, the flue, the commissioning, all of it.
Verified: 5-year workmanship guarantee on installations, backed directly by Lock & Lindfield (non-insurance backed).
Free power flush and magnetic filter
Every new boiler installation includes a full power flush and a magnetic filter — so your boiler starts on a clean system and stays protected — at no extra cost.
Verified: free power flush and magnetic filter (e.g. Adey MagnaClean) included with every new boiler installation.
A free smart thermostat
As a promotional offer, new installations include a free smart thermostat — better control of your heating, and lower bills, with nothing added to the quote.
Verified: free smart thermostat included as a promotional offer with new installations.
Gas Safe, and certified to trust
Every engineer is on the Gas Safe register (No. 520049), and we're certified Which? Trusted Traders — independent proof that we work to a standard, not just a promise on a leaflet.
Verified: Gas Safe Registered No. 520049 · Which? Trusted Trader certified.
Honest work, left clean
We give honest advice with no pressure, remove your old equipment, and leave your home tidy — the things our reviews describe over and over, which matter as much as any certificate.
"Friendly and able to answer any question with patience and no pressure… left my flat in an excellent condition" — Suzanne, Google. "Left the house cleaner than when they started" — Emily, Google.
Included with every new boiler
Real value, not just a warranty card.
Up to 12-year warranty
New boilers come with up to a 12-year manufacturer warranty, registered for you as an accredited installer.
5-year workmanship guarantee
Our own workmanship is guaranteed for 5 years (non-insurance backed) — the fitting, not just the boiler.
Free filter & power flush
Every new boiler installation includes a magnetic filter and a full power flush at no extra cost.
Free smart thermostat
A free smart thermostat is included as a promotional offer with new installations.
We install A-rated boilers from Worcester Bosch, Vaillant, Baxi, Ideal, Glow-worm and Viessmann — and finance is available through Phoenix Financial Consultants Ltd (we are an FCA Introducer Appointed Representative, FRN 1015770).
Every guarantee above is verified — Gas Safe registered, Worcester Bosch accredited, Vaillant approved and Which? Trusted Trader. Not a promise we invented for a leaflet.
★ Rated 5.0 out of 5 on Google · Gas Safe No. 520049