RARE Plumbing London engineer working on a central heating system in a luxury London home
Central Heating Specialists — London

Central Heating Repairs
& Installation London

Expert repairs, full system installations & annual servicing. Gas Safe registered engineers, available 24/7, 365 days a year across London.

Book This Service

Available 24/7. Gas Safe registered engineers.

Or call us directly: 020 7458 4949

2–4 hr Response

Emergency call-out across London

Gas Safe Registered

Every engineer fully certified

Heating Specialists

Full system design & repair

Transparent Pricing

Fixed quotes before work starts

Central heating repairs in London typically take 1–2 hours once a Gas Safe–registered engineer has diagnosed the fault, charged at our standard rate of £150/hr + VAT with no separate call-out charge. Most faults — sludge build-up, failed zone valves, pump issues or thermostat faults — are fixed on the same visit, with 24/7 emergency response available across Central London.

Quick Facts

Suitable for
All wet central heating systems, single flats to multi-storey townhouses
Typical causes
Sludge build-up, zone valve or pump failure, thermostat faults
Estimated timescale
1–2 hours for most repairs, 3–5 days for full system installs
Cost factors
Fault type, system size, radiator count, controls required
Emergency or non-emergency
Both — 24/7 emergency response and planned installations available
Related services
Power flushing, smart thermostats, boiler installation
Recommended next step
Check for cold spots or error codes, then call 020 7458 4949
Expert Engineers

How we approach central heating work in London

Central heating repairs in London involve diagnosing faults with radiators, pumps, zone valves, thermostats or the boiler itself. RARE Plumbing provides Gas Safe–registered central heating repairs and full system installation across prime London postcodes — with a 2–4 hour emergency response and transparent fixed pricing on all work.

Central heating in prime London properties is rarely straightforward. Multi-storey townhouses in Hampstead, Knightsbridge and St John's Wood often have complex zoned systems with multiple heat exchangers, bespoke pipework layouts and premium boilers. Our engineers have worked in these properties for over 13 years and understand the specific challenges they present.

Sludge and magnetite contamination is the most common cause of poor central heating performance in London homes. Hard water accelerates internal corrosion, depositing black iron oxide throughout the system. The result is cold radiators, increased boiler wear and higher energy bills. A power flush combined with a magnetic filter and inhibitor treatment resolves most contamination issues and is frequently the first recommendation we make.

For new central heating installations, we provide a complete design and build service — from the initial heat loss calculation to boiler selection, radiator sizing, pipework routing and commissioning. Every installation is backed by full Gas Safe certification and detailed documentation stored in your client portal.

Central heating repairs

From emergency no-heat call-outs to planned system diagnostics, we repair all aspects of wet central heating systems.

Emergency central heating repairs — 24/7
Radiator repair & replacement
Power flushing & system cleanse
TRV & zone valve replacement
Pump replacement & servicing
System rebalancing & pressure checks
Leak detection & repair
Annual boiler servicing

Central heating installation

Full system design, supply & installation.

We design and install complete central heating systems for London homes of every scale — from a straightforward radiator system to a complex multi-zone installation with smart controls. Our engineers handle everything from pipework and radiators to boiler installation, commissioning and Gas Safe certification.

Full central heating system design & installation
Radiator upgrades & replacements
Pipework installation & upgrades
Combi boiler installation & replacement
System (heat-only) boiler installations
Smart thermostat & multi-zone controls
Magnetic filter installation
Gas Safety Certificate (CP12)
Get an Installation Quote

Common central heating faults we fix

No heating or hot water
Cold radiators or cold spots
System losing pressure
Noisy pipes or radiators (banging/gurgling)
Faulty thermostatic radiator valves (TRVs)
Zone valve failures
Pump failures
Sludge & magnetite build-up
Uneven heat distribution
Thermostat and controls faults
Airlocks in the system
Gas valve & ignition faults

Smart heating controls we install

Upgrade your central heating system with intelligent, multi-zone controls for maximum comfort and efficiency.

Heatmiser Neo
Honeywell evohome
Tado

24/7 emergency central heating repairs

Around-the-clock support, whenever you need us.

Central heating failures are never convenient. Our fully equipped engineers operate around the clock across Central and North London, carrying parts for all major systems to enable same-day fixes in most cases. Gas Safe–registered, transparent fixed pricing, no call-out surprises.

Book a Central Heating Engineer

Available 24/7 — Gas Safe registered specialists across London.

020 7458 4949Book Online
Gas Safe Registered
Heating Specialists
2–4 hr Emergency Response
Full System Installations
Transparent Fixed Pricing
5★ Client Testimonials

"RARE installed a full central heating system across our five-storey townhouse. Immaculate work, minimal disruption, and they left the house spotless. Absolutely first class."

James H. · Mayfair

"Our system had cold spots on every radiator. RARE diagnosed a sludge problem, power flushed and rebalanced everything in a day. The difference is remarkable."

Charlotte F. · Hampstead

"Called at 9pm with no heating. Engineer arrived within 3 hours, found a faulty zone valve and had heat back on before midnight. Outstanding."

Edward S. · Knightsbridge

The RARE Standard™

How We Work

Every engineer. Every visit. Every time.

Our Full Standards

01

We listen and understand the issue

We hear your concerns in full before forming any opinion about the cause.

02

We inspect properly before making assumptions

Diagnostic tools and a thorough assessment come before any recommendation.

03

We protect your home before starting work

Floor coverings are laid and surfaces protected before a single tool is lifted.

04

We record work clearly with notes and photographs

Every job is photographically documented — before, during and after.

05

We explain the outcome before leaving

We confirm what was done, what was found and any recommended next steps.

Local Coverage

Serving London's most iconic neighbourhoods.

Our engineers are established across prime London — near landmarks including Berkeley Square, Harrods, Eaton Square, Regent's Park and Hampstead Heath.

Installing a system boiler or plant room?

For new system boiler installations, cascade configurations and plant room rebuilds — see our dedicated System Boiler Installation page. This page focuses on central heating repairs and general maintenance.

System Boiler Installation
FAQ

Central heating questions answered

Everything you need to know before you call.

Reviewed by RARE Plumbing London Engineering Team

Gas Safe Registered Heating Engineers · Reviewed 1 September 2026

Authoritative Sources & References

  • Wikipedia
    Central heating — Wikipedia

    Wikipedia — Encyclopaedic overview of central heating systems, heat generation, circulation methods and the history of whole-building heating.

  • Wikipedia
    Boiler — Wikipedia

    Wikipedia — Reference on the design and operation of closed-vessel boilers used for central heating and hot water generation.