How do I know if my boiler needs repairing or replacing?

If your boiler is less than 10 years old and the repair cost is reasonable relative to the value of the boiler, repair is usually the better option. Older boilers, or those that have had repeated breakdowns, may be more cost-effective to replace. When we attend, our engineer will give you an honest assessment of both options so you can make an informed decision.

My boiler is showing an error code — what should I do?

Don't ignore a fault code. Common codes relate to low pressure, ignition failures, or sensor faults. You can check your boiler's manual for a brief description, but the safest thing is to call us. Our engineers are familiar with all major boiler brands including Worcester Bosch and Vaillant, and can diagnose and clear most fault codes quickly.

Can you repair my boiler the same day?

In most cases, yes. We carry a wide range of common spare parts in our vans so that many repairs can be completed on the first visit. If a specific part needs ordering we'll arrange a return visit as quickly as possible and advise you on whether it's safe to use the boiler in the meantime.

My boiler keeps losing pressure — is that a serious problem?

A boiler that repeatedly drops pressure usually indicates a leak somewhere in the system, a faulty pressure relief valve, or an issue with the expansion vessel. Topping it up regularly is only masking the underlying problem. Our engineers can find the root cause and carry out the correct repair.

Do you service all boiler makes and models?

Yes. Our Gas Safe registered engineers are experienced with all major brands including Worcester Bosch, Vaillant, Baxi, Ideal, Viessmann, and Potterton, among others. We carry parts for the most common models and can source anything we don't have in stock.

Boiler Repairs in Greenwich

We carry out same-day boiler repairs and servicing across Greenwich, getting your boiler running safely and smoothly — fast.

5.0 · 73 verified reviews

Clear & Upfront Pricing
24/7 Callouts, 365 Days A Year
Trusted Local Business
Gas Safe Registered Installers
£5,000,000 Public Liability Insurance

0203 886 2602

Greenwich Plumbers heating engineer diagnosing a combi boiler fault in Greenwich

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Reliable Boiler Repairs in Greenwich

A broken boiler leaves you without heating and hot water, and it always seems to happen at the worst possible time. Greenwich Plumbers provide fast, dependable boiler repairs across Greenwich and the surrounding SE10, SE3, SE7, SE8, SE13, SE18, SE9 and SE12 areas. Our engineers are Gas Safe registered and work on all the major boiler brands, including Worcester Bosch and Vaillant, so whatever make you have, we can help.

We take the time to diagnose the real cause of the fault rather than simply swapping parts and hoping. From ignition and pressure faults to faulty pumps, leaking seals, thermostat problems and error codes, we track down the issue and explain your options clearly before any work goes ahead. Our vans carry a wide range of common spares, which means many repairs can be completed in a single visit.

The mixed water supply across Greenwich takes its toll on older boilers, so we check heat exchangers and components for scale as standard on every breakdown we attend.

As a family-run business, we believe in honest advice and clear pricing — if a repair isn't the most sensible option, we'll tell you. Every job is left safe, tested and working, and we're available 24/7 for boiler breakdowns that simply can't wait.

Boiler Repair & Servicing Prices

Boiler repair (first hour): from £95 + VAT
Annual boiler service: £95 + VAT

All prices are quoted upfront before work begins — no hidden charges. Need a new boiler instead? See our boiler installation service or our guide to choosing a plumber in Greenwich.

Call 0203 886 2602

Greenwich Plumbers engineer checking boiler pressure with a gauge during a boiler repair in Greenwich

Our Boiler Repair Process

Book your repair
Call us and describe the fault — no heating, no hot water, error codes, leaks or strange noises. We arrange a visit that suits you.
Full diagnosis
Our Gas Safe engineer carries out a thorough inspection to pinpoint the exact cause rather than guessing at parts.
Carry out the repair
We fix the fault using quality parts, with common components carried on the van to get you back up and running sooner.
Test & handover
We test the boiler under normal operation, confirm it is running safely and explain what was done.

Boiler repairs for Greenwich homes and flats

If you need a plumber in Greenwich, we can help with boiler faults in period houses, flats and family homes across SE10 and nearby areas. From odd noises to a full breakdown, our engineers diagnose the issue properly and put it right without fuss.

Boiler Making Noise

Banging, kettling or gurgling often points to limescale on the heat exchanger, trapped air, low circulation, or pump trouble. We check the system safely, test the water flow and clean or replace the parts needed to stop the noise and protect the boiler.

Leaking Boiler

A leaking boiler can come from worn seals, a faulty pressure valve, corrosion, or loose pipework around the unit. We trace the source carefully, repair the leak and check for any damage, which is especially important in older Greenwich properties where pipework may already be under strain.

Boiler Fault Codes

Fault codes are the boiler's way of telling you something specific has gone wrong, from ignition issues to sensor or fan faults. We read the code, run proper diagnostics and fix the underlying problem rather than just resetting the boiler and hoping for the best.

No Hot Water

If you have heating but no hot water, the fault may be with the diverter valve, thermostat, cylinder controls or ignition sequence. We test each stage of the system, identify the failed component and restore your hot water as quickly as we can.

No Heating

No heating can be caused by low pressure, a failed pump, blocked filters, thermostat problems or a boiler lockout. We work through the system methodically, from controls to circulation, so you get a proper repair rather than a temporary fix.

Boiler Losing Pressure

A boiler that keeps losing pressure may have a hidden leak, a faulty pressure relief valve, air in the system or a problem with the expansion vessel. We inspect the boiler and connected pipework, then re-pressurise and repair the cause so the fault does not keep coming back.

Pilot Light Problems

On older boilers, a pilot light or ignition failure can be down to a thermocouple fault, blocked pilot jet, weak gas supply or failing ignition components. We test the ignition safely, clean or replace worn parts and make sure the boiler lights reliably again.

Frozen Condensate Pipe

When the condensate pipe freezes in cold weather, the boiler can lock out and stop heating or hot water altogether. We thaw the pipe safely, check the route for poor insulation and advise on simple protection so the same issue is less likely to return.

Expert Advice

“Most boiler faults come down to a handful of usual suspects. I check the whole system in your Greenwich home so the repair actually lasts.”

KevinGas Safe registered engineer35 years’ experience

Frequently Asked Questions

: If your boiler is less than 10 years old and the repair cost is reasonable relative to the value of the boiler, repair is usually the better option. Older boilers, or those that have had repeated breakdowns, may be more cost-effective to replace. When we attend, our engineer will give you an honest assessment of both options so you can make an informed decision.
: Don't ignore a fault code. Common codes relate to low pressure, ignition failures, or sensor faults. You can check your boiler's manual for a brief description, but the safest thing is to call us. Our engineers are familiar with all major boiler brands including Worcester Bosch and Vaillant, and can diagnose and clear most fault codes quickly.
: In most cases, yes. We carry a wide range of common spare parts in our vans so that many repairs can be completed on the first visit. If a specific part needs ordering we'll arrange a return visit as quickly as possible and advise you on whether it's safe to use the boiler in the meantime.
: A boiler that repeatedly drops pressure usually indicates a leak somewhere in the system, a faulty pressure relief valve, or an issue with the expansion vessel. Topping it up regularly is only masking the underlying problem. Our engineers can find the root cause and carry out the correct repair.
: Yes. Our Gas Safe registered engineers are experienced with all major brands including Worcester Bosch, Vaillant, Baxi, Ideal, Viessmann, and Potterton, among others. We carry parts for the most common models and can source anything we don't have in stock.