No hot water? No heat? We sort it.
Gas and oil boilers, hot water cylinders and immersions — repaired, serviced or replaced by RGI-registered plumbers who carry the common parts on the van.
What we work on
- Gas combi and system boilers — Worcester, Vaillant, Baxi, Ideal, Glow-worm and the rest
- Oil boilers and external boiler houses
- Hot water cylinders, immersions and thermostats
- Heating controls, zone valves, pumps and timers
- Power flushing for cold spots and sludged systems
Repair or replace?
We will tell you honestly. A twelve-year-old boiler with a failed heat exchanger is usually money down the drain; the same boiler with a stuck diverter valve is a straightforward fix worth doing. What we will not do is condemn a working boiler to sell you a new one — and if a replacement genuinely is the sensible call, we will price it against a repair so you can decide with the numbers in front of you.
Annual servicing
An annual service is what keeps a boiler efficient, keeps the manufacturer's warranty intact and catches the small failures before they become a cold December morning. We check combustion, flue integrity, seals, pressures and controls, and leave you a written report.
- Full combustion analysis and flue check
- Gas soundness test and safety inspection
- Clean and check of burner, heat exchanger and condensate
- Written service record for your warranty
Indicative pricing
Parts are quoted separately and shown to you before fitting. All work is carried out by RGI-registered installers.
Common questions
Questions we get asked a lot
My boiler keeps losing pressure — is that serious?
It means water is escaping somewhere: a leak on the system, a failed expansion vessel or a passing pressure relief valve. None of them fix themselves, and topping it up weekly is corroding the system from the inside. Worth a look sooner rather than later.
Do you do gas safety certificates for landlords?
Yes. We are RGI-registered and can issue a Declaration of Conformance and a landlord gas safety report.
How long does a boiler replacement take?
A straight swap in the same position is usually a day. Moving the boiler, changing fuel type or upgrading to a system with a new cylinder is two to three days.
Is a power flush worth it?
If radiators are cold at the bottom, the system is noisy, or you are fitting a new boiler onto old pipework — yes. If your system is clean and running well, no. We will test before recommending it.
Also from Northgate
Other things we fix
Drain Cleaning
Fast, effective drain clearing with jetting and CCTV — and advice so it stays clear.
Learn moreLeak Detection & Repair
Non-invasive tracing to find the leak first — so we only open what we have to.
Learn moreSewer & Outside Drain Repair
CCTV surveys, root cutting, patch lining and full replacement of collapsed drains.
Learn moreNeed a plumber?
Let's get it sorted.
From leaking taps to major plumbing emergencies, we're here to help.