Boiler Repair in Stockton-on-Tees

“Called them out to a boiler that wouldn’t fire. Gary diagnosed a faulty PCB, explained the options clearly, and had it sorted same afternoon. Fair price, no messing about.”

Covering all of Stockton-on-Tees — Norton, Fairfield, Hartburn, Bishopsgarth, Elm Tree, Eaglescliffe, and the Town Centre. Gas Safe registered (972035), and we get to most callouts same day when we can.

Repairs from £75 including diagnosis and fix. We carry parts on the van for Worcester Bosch, Vaillant, Baxi, Ideal, and most common brands. First-visit fixes where possible, and everything’s backed by a 12-month guarantee on parts and labour. No hidden costs, no call-out charges on top. You get a proper assessment, honest advice about repair vs replacement, and a fixed price before we start work.

Common Boiler Problems in Stockton

Boilers not firing up at all — usually ignition problems, faulty thermocouples on older models, or PCB issues on newer ones. Boilers cutting out mid-cycle — often pressure sensors, thermistors, or pumps struggling. Kettling — that rumbling noise from limescale buildup on the heat exchanger, common in hard water areas. No hot water but heating works fine — diverter valves on combis are the usual culprit. Pressure dropping constantly — small leaks in the system, faulty pressure relief valves, or expansion vessel problems. Radiators cold at the bottom or not heating evenly — circulation issues, sludge buildup, or pump failure. Error codes flashing — fault diagnosis needed, could be anything from simple resets to failed components. We carry diagnostic tools and common replacement parts so most jobs get sorted first visit.

Boiler Repair Pricing

| Diagnostic and simple repair | From £75 | | Thermostat or sensor replacement | £75 - £150 | | Diverter valve replacement | £150 - £250 | | Fan replacement | £150 - £250 | | PCB (circuit board) replacement | £200 - £400 | | Gas valve replacement | £200 - £350 | | Pump replacement | £150 - £300 | | Heat exchanger replacement | £300 - £500 |

Prices include parts, labour, and VAT. If we need obscure components not carried on the van, we’ll order them and schedule a return visit — you only pay when the job’s complete.

What’s Included

Full system diagnostics — we don’t just swap parts and hope. Proper fault-finding with calibrated test equipment. All necessary parts for the repair. Labour and follow-up visits if needed. 12-month guarantee on all work and parts fitted. Safety checks and combustion analysis after repair. Clear explanation of what failed and why. Honest advice if your boiler’s past its best — we won’t sell you a repair that’s throwing good money after bad.

Brands We Work On

Worcester Bosch, Vaillant, Baxi, Ideal, Potterton, Glow-worm, Viessmann, Ariston, Ferroli, Main, Alpha, and most other makes. We stock common parts for the popular models and can source components for older or less common boilers within a day or two. If your boiler’s obscure and parts are scarce, we’ll let you know upfront.

Our Repair Process

Phone or book online — we’ll ask basic questions about the fault and arrange a visit. Engineer arrives with diagnostic kit and common parts. Full system check — gas pressure, combustion, safety devices, controls. Diagnose the fault and explain what’s failed and why. Quote for repair — fixed price before we start. Complete the repair, test thoroughly, check combustion. Show you what we’ve done and answer questions. 12-month guarantee paperwork and service record updated.

Repair or Replace?

General rule — if your boiler’s under 10 years old and the repair cost is under £500, it’s usually worth fixing. If it’s 12-15 years old, you’re looking at bigger repairs regularly, and a new boiler pays for itself in efficiency gains. If parts are obsolete or the heat exchanger’s failed on an old boiler, replacement makes more sense. We’ll give you honest advice — we do both repairs and installations, so there’s no sales pressure either way. Just straight facts about what makes financial sense.

Stockton-Specific Issues

Victorian terraces around the town centre and Norton often have old pipework with sediment buildup — causes circulation problems and pump failures. The larger homes in Eaglescliffe and Hartburn with conventional systems and multiple zones put more strain on pumps and valves. Older estates in Fairfield and Bishopsgarth have a mix of boiler ages — some original to the build and struggling. Modern builds in Elm Tree mostly have combis, but cheaper installations sometimes skip proper flushing, leading to early failures. Water quality across Stockton can cause limescale buildup in heat exchangers, especially if the system wasn’t treated with inhibitor from new.

What areas of Stockton do you cover?

Norton, Fairfield, Hartburn, Bishopsgarth, Elm Tree, Eaglescliffe, and the Town Centre. If you’re in Stockton-on-Tees, we cover you. Same-day callouts most days for emergencies, next-day for routine repairs. We’re local, so response times are quick and we’re not charging you for travel from miles away.

Can you repair older boilers?

Yes, within reason. If parts are still available and the repair makes economic sense, we’ll do it. We’ve got contacts for sourcing obsolete parts and experience with older systems. That said, if your boiler’s ancient and parts are scarce or expensive, we’ll be honest about the fact that replacement makes more sense. No point spending £400 on repairs for a boiler that’s likely to fail again in six months.

Do you carry parts on the van?

Yes — common parts for Worcester Bosch, Vaillant, Baxi, and Ideal. Thermostats, sensors, diverter valves, fans, ignition leads, PCBs for popular models, pumps, pressure relief valves, and expansion vessels. Most repairs get done first visit. If we need something obscure or model-specific, we’ll order it and come back — usually next day. You don’t pay until the job’s finished.

Do you offer same-day repairs?

Most days, yes. We keep slots free for emergency callouts, so if your boiler’s died and you’ve got no heating or hot water, we’ll get to you same day when we can. Routine repairs that can wait a day or two get scheduled around emergencies. Winter gets busier, so booking ahead helps, but we’ll always prioritize no-heat situations.

Is the repair guaranteed?

Yes — 12 months on parts and labour. If the same fault comes back or the part we fitted fails, we’ll come back and sort it at no extra cost. That’s on top of any manufacturer warranty on the parts themselves. The guarantee doesn’t cover new faults or wear and tear on other components, but the specific repair we’ve done is covered.

Boiler playing up? Get it fixed or see our full boiler repair service. More about our Stockton coverage.