If you’re getting hot water but no heating, it’s often a sign of a boiler or central heating system fault that requires prompt inspection. For landlords, leaseholders, and property managers, this issue can disrupt tenant comfort, breach legal obligations, and affect property compliance in the competitive London housing market.
Fraser Bond works with certified Gas Safe heating engineers across Greater London to resolve heating issues quickly and safely—helping to prevent further damage, maintain legal compliance, and restore functionality in both private and rented properties.
This issue is common in combi boilers and system boilers where hot water remains functional, but radiators stay cold. The root cause can range from minor control faults to component failures. Key causes include:
This component controls whether the boiler sends heat to taps or radiators. If stuck or broken, it may prioritise hot water only.
Incorrect settings or a failed wall thermostat can prevent the heating circuit from activating, even if hot water functions.
If the pressure drops below safe operating levels, central heating may shut off to protect the system.
Air trapped in the radiators or sludge build-up in pipes can block heat flow.
Even if the boiler heats water, a failed pump may prevent circulation to radiators.
Fraser Bond’s heating engineers conduct thorough diagnostics to isolate the issue and recommend the safest, most cost-effective solution.
In rented properties, heating and hot water are legal repair obligations under the Landlord and Tenant Act 1985 and Housing Health and Safety Rating System (HHSRS).
Fraser Bond supports:
Landlords – Repairing heating quickly to avoid legal penalties or rent withholding
Letting agents – Coordinating between engineers and tenants
Leaseholders – Resolving heating issues tied to private boilers in flats
Block managers – Diagnosing shared heating system faults
We provide full service reports, CP12 checks (if gas-related), and guidance on repair options or replacements.
Fraser Bond offers same-day heating fault diagnosis and repairs in London, delivered by Gas Safe engineers. Services include:
Heating and boiler diagnostics
Diverter valve and thermostat replacements
Radiator bleeding and powerflushing
System re-pressurisation
Documentation for landlords or leaseholders
If a replacement boiler is needed, we also offer compliant boiler installations with all necessary Building Regulation certificates and safety sign-offs.
If you have hot water but no heating, it’s likely a fault in your central heating controls, valves, or circulation system. Fraser Bond offers a rapid, fully certified service for diagnosing and repairing these issues—supporting compliance, property value, and tenant comfort.
Visit FraserBond.com to book a heating inspection or include boiler diagnostics in your maintenance service plan.
