Best Paint Colours for a Victorian Terrace in London
April 7, 2026
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Period-appropriate colour palettes that look stunning on London’s most beloved property type.
We provide central heating services in London including installation, repair, and maintenance across all 33 boroughs. Whether you need a full new central heating system, a repair to an existing system that is underperforming, or an efficiency upgrade to reduce your energy bills, our Gas Safe registered central heating engineers deliver reliable, fixed-price solutions for every property type.
🔒 No obligation. We respond within 24 hours
Trustpilot rating 1,800+ verified reviews
Years of central heating specialist experience
London boroughs covered every day
Call-out charge ever, any time
Central heating faults range from minor component issues to whole-system failures. Here are the eight most common problems our engineers diagnose and resolve across London — correctly, on the first visit.
The heating system has completely stopped working — no heat from radiators and no hot water from taps or showers. Causes range from boiler lockout to failed pump, thermostat, or zone valve.
Act immediately
The pressure gauge is below 1 bar — the boiler will not fire efficiently, may shut off completely, or struggle to heat properly. Often caused by a small system leak or a failing pressure relief valve. Repressurise the system .
The boiler is firing but heat is inconsistent across the property — some rooms warm up quickly while others stay cold. Usually a system balancing issue or a zone valve fault affecting specific circuits.
The thermostat is set but the heating doesn't respond correctly — or the system runs when it shouldn't. Faulty thermostats, failed programmers, or misconfigured smart controls are all common culprits.
The boiler fires briefly then shuts itself down — known as lockout. Common causes include low water pressure, a faulty thermistor, a blocked heat exchanger, or a failing pump. Engineer diagnosis is required.
The heating system is running but energy bills are rising without explanation. An ageing system, a failing pump, sludge build-up, or an incorrectly sized boiler all reduce system efficiency and increase running costs.
Banging, kettling, or loud gurgling sounds from the boiler or pipework. Kettling is usually caused by limescale buildup on the heat exchanger — a common problem in London's hard water areas and older heating systems.
Visible water leaking from the boiler casing, pipework joints, or radiator connections. Leaks can cause pressure loss, water damage, and further system faults if not addressed promptly by a Gas Safe engineer.
Choosing the right central heating system depends on your property size, hot water demand, available space, and existing infrastructure. Our engineers will advise you on the best option during your free assessment — here is a useful starting guide.
Best for: smaller properties and flats
A combi (combination) boiler provides both central heating and instant hot water from a single compact unit — with no need for a separate hot water cylinder or cold water tank. This makes it by far the most popular choice for London’s flats, terraced houses, and smaller semis, where space efficiency matters. Combi systems are highly efficient, respond instantly to heating demand, and are straightforward to maintain. They work best in properties with one or two bathrooms and moderate hot water usage.
Best for: 3–5 bed homes with multiple bathrooms
A system boiler works alongside a hot water storage cylinder to provide central heating and stored hot water for high-demand properties. Unlike a combi, it can supply multiple bathrooms and showers simultaneously without pressure loss — making it the preferred choice for larger London homes in areas such as Barnet, Richmond, Bromley, and Sutton. It requires space for a cylinder — typically in an airing cupboard — but offers superior hot water delivery for busy households.
Best for: properties retaining traditional systems
A conventional (heat-only) boiler works with both a hot water cylinder and a cold water feed tank — typically located in the loft. It is most appropriate where a London property already has a traditional heating infrastructure that is being retained rather than replaced. Converting from a conventional to a combi system involves additional pipework costs and is quoted after a full system assessment. Our engineers will advise at survey whether like-for-like replacement or full conversion offers the better long-term value.
Not sure which applies to your situation? Our engineer will assess your radiator at no charge and give you an honest recommendation before any work is agreed.
Just need a new boiler? see our Boiler installation Service
Radiator problems only? See Radiator Services
Fixed prices agreed before we start. No hidden extras, no call-out charge. These are our standard rates — your engineer confirms the exact cost before any work begins.
Central heating installation costs vary depending on property size, system type, the extent of pipework required, and the specification of boiler and radiators chosen. Repair costs depend on the fault identified. All prices are confirmed after a free assessment — not before. Indicative ranges are shown for standard London properties.
Thermostat, zone valve, pump, pressure fault
1–3 hrs
Remove sludge and restore system efficiency
Half–full day
Boiler, pipework, radiators, controls — full system
2–4 days
Larger property, high demand, full system
3–5 days
Smart thermostat, programmer, zone controls
2–4 hrs
Full system check, boiler service, safety test
1–2 hrs
All installation prices are confirmed after a free, no-obligation assessment. Fixed-price repairs are confirmed before any work begins. Central heating cost in London varies by system type, property size, and specification — always assessed before quoting.
Four clear steps from your first enquiry to a fully optimised, tested heating system.
01
A Gas Safe engineer visits your property, reviews your existing system or the space available for a new installation, and assesses your heating needs — including property size, hot water demand, and current system condition. No obligation to proceed.
02
Based on the assessment, your engineer recommends the most appropriate system type and specification — and confirms a fixed price. For repairs, the fault is diagnosed and a fixed price given before any work begins. You approve everything before we start.
03
Full installation is carried out by our qualified Gas Safe engineers — boiler, pipework, radiators, controls, and all associated works managed in sequence. Repairs are completed to the same standard, with parts sourced and fitted correctly on the first visit wherever possible.
04
Our engineers are stationed across every London borough. We dispatch the nearest available plumber the moment you call — reaching most addresses in under an hour, day or night, including bank holidays.
Every job — from a dripping tap to a full boiler replacement — is covered by our £5 million public liability insurance from the moment our engineer arrives until the job is signed off and guaranteed.
We never charge a call-out fee — not at 3am, not on a bank holiday. Your engineer confirms a fixed price before starting any work. What we quote is what you pay. No hidden extras, ever.
Over 2,400 verified Trustpilot reviews from London homeowners — the majority specifically praising our response speed, fixed pricing and professionalism. Read reviews from your own borough before you book.
Every engineer carrying out boiler, heating or gas work is fully Gas Safe registered. You can verify our registration independently on the Gas Safe Register website at any time using our registration number.
All plumbing repairs and installations come with our 12-month workmanship guarantee. If anything we have carried out develops a fault within 12 months, we return and fix it at absolutely no charge to you.
“Full central heating system installed in our 4-bed semi in Barnet — new combi boiler, 10 radiators, all new pipework, and smart controls. The engineer gave us a clear fixed quote after the survey and the installation was completed in three days, exactly on time. The house heats up in half the time it used to. Excellent from first call to sign-off.”
“Heating had been unreliable for two winters — two other engineers couldn’t find the fault. Elite diagnosed it correctly first visit as a failing zone valve affecting the upstairs circuit. Fixed in two hours. Price was exactly as quoted. Finally have even heating throughout the house.”
Free assessment, fixed price, Gas Safe certified. Available across all 33 London boroughs.
020 1234 5678
Our central heating engineers cover all 33 London boroughs — from central heating installation in Camden, Islington and Hackney to heating repairs in Croydon, Bromley, Barnet, and Richmond. Engineers are based locally across London so assessments and installations can be arranged quickly wherever you are.
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A well-designed central heating system makes your home consistently comfortable, reduces energy bills, and adds long-term value. Whether you need a repair, an upgrade, or a full new system — our Gas Safe engineers are available across all 33 London boroughs. Start with a free, no-obligation assessment.