Gas Safe registered engineers for boiler service, repair, installation and gas safety certificates across Northampton and Northamptonshire.
RJB Heating & Plumbing Ltd provides Gas Safe registered heating, gas and plumbing services throughout Northampton. From annual boiler servicing and emergency repairs to new boiler installations and landlord gas safety certificates, we're your reliable local engineers — with clear pricing and honest advice. Based in Overstone, we're genuinely local to Northampton and the surrounding villages.
Annual boiler servicing by Gas Safe registered engineers, keeping your boiler safe, efficient and helping meet manufacturer warranty servicing requirements.
Fast, reliable boiler breakdown repairs from Gas Safe registered engineers across Northampton.
New boiler supply and installation across Northampton, with fixed quotes and manufacturer-backed warranties.
Landlord gas safety certificates (CP12) for Northampton properties, issued same day by Gas Safe registered engineers.
Central heating repairs, upgrades and power flushing across Northampton by Gas Safe registered engineers.
Service, repair and installation of unvented hot water cylinders across Northampton by qualified engineers.
Over 20 years doing the basics brilliantly — turning up, doing the job properly, and being easy to deal with.
Morning or afternoon slots, and your engineer calls or texts when on the way.
Digital gas safety certificates issued and emailed the same day.
Every price agreed upfront. Parts quoted before we touch anything.
Every engineer fully certified (596004), carrying ID on every single visit.
A family-run business that has handled everything from routine services to full installations.
Based in Overstone, we know the area and the local housing stock well.
If you're experiencing any of these in Northampton, give us a call — we diagnose the cause properly before quoting.
Banging, whistling (kettling) or gurgling usually points to trapped air, limescale or circulation problems. We diagnose the cause rather than guess.
One of the most common call-outs. Causes range from a faulty diverter valve or thermostat to a broken pump — we'll find it and quote before we fix.
A gradual pressure drop often means a leak somewhere in the system or a failing expansion vessel. We trace the cause and put it right.
Cold at the bottom usually means sludge; cold at the top means trapped air. We bleed, balance or power flush as needed.
Low pressure, a blocked condensate pipe (especially in winter) or a faulty sensor can all cause this. We work through it methodically.
Modern boilers show fault codes — we read them, interpret them correctly for your make, and explain what the fix involves.
Need a repair? See our Northampton boiler repair page for the full list of faults we handle.
We cover Northampton town and the surrounding Northamptonshire areas, including:
See our full areas we cover page for more.
We work with landlords and letting agents across Northampton, issuing CP12 landlord gas safety certificates the same day. Combine a certificate with a boiler service and save £35 versus booking separately. We can coordinate access directly with your tenants and send digital documentation straight to your inbox.
See our Northampton gas safety certificate page for details.
Genuine reviews from our Google profile.
"Lovely chap who came and gave our gas central heating and boiler a service. He was very helpful and courteous. The price charged was very reasonable. Would most definitely recommend and will use again."
"Ricki arrived promptly and carried out a thorough service, giving advice where necessary. A very pleasant and helpful person. I will definitely use RJB again for future services and repairs."
"Can't recommend Ricki enough. He thoroughly tested my boiler until the fault was found and fixed, explaining the process throughout. A professional service that I highly recommend."
Call your local Gas Safe registered engineers today.