Central heating cover extends beyond the boiler itself to protect the radiators, pipework, controls and often the hot water cylinder that make up the full heating system. It typically costs more than boiler-only cover but closes gaps that boiler-only policies leave open, since many heating breakdowns originate in pipework, radiator valves or system controls rather than the boiler unit. The right choice depends on the age and complexity of the whole system, not just the boiler's age. |
Kael Tripton · UK Home & Energy Desk · Primary sources only |
TL;DR
Last reviewed: July 2026 |
KEY FACTS
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| Boiler-only cover | Protects the boiler unit and its immediate components only |
| Central heating cover | Adds radiators, pipework, controls and often the cylinder |
| Typical cost difference | Central heating cover generally costs more per month |
| Best fit | Older systems, or homes with a history of pipework or radiator issues |
| Check before buying | Excluded parts list, age limits, and annual service requirement |
What central heating cover actually adds over boiler-only cover
Boiler-only cover, as the name suggests, protects the boiler unit itself: its internal components, and a callout and repair service when it breaks down or fails to fire. Central heating cover widens that scope to the rest of the system the boiler feeds into: radiators and their valves, the pipework connecting them, room thermostats and heating controls, and in many policies the hot water cylinder as well.
The gap this closes is real and common: a significant share of heating breakdowns are not boiler faults at all, but pipework leaks, stuck radiator valves, or failed programmable controls. A boiler-only policy leaves all of those outside cover, so a homeowner can pay a monthly premium and still face a full repair bill for a cold radiator or a leaking pipe.
Typical cost and what drives it
Central heating cover typically costs more per month than boiler-only cover, reflecting the wider set of components and call-outs a provider is underwriting. The exact premium depends on the age and type of the heating system, the property's size (more radiators and pipework to cover), and whether an annual service visit is bundled into the price or charged separately.
For a newer system with a recent boiler and modern radiators, the additional cost of central heating cover may not be justified if the components are all under manufacturer warranty already. For an older system, particularly one where the pipework or radiators predate the current boiler, the wider cover is more likely to pay for itself over a few years.
What's usually excluded, and the age-limit question
Even comprehensive central heating cover policies typically exclude the property's general electrical wiring beyond the heating system's own controls, and pre-existing faults present before the policy started. Some providers apply age limits either on the boiler, the wider system, or the property itself, which can rule out older homes or systems from the widest tiers of cover.
The excluded-parts list and any age restrictions should be read in full before buying, since these vary meaningfully between providers and are the detail most likely to matter if a claim is ever made.
Central heating cover versus a standalone annual service
For a well-maintained, relatively modern system, a standalone annual service visit (checking efficiency, safety and catching early faults) combined with setting aside savings for occasional repairs can work out cheaper over several years than a full cover policy, provided the household can absorb an unexpected repair bill if one arises. Central heating cover functions as insurance against that unpredictability, at a premium, rather than a guaranteed cost saving.
The decision ultimately turns on risk tolerance and system age: households wanting predictable monthly costs and protection against an ageing system's higher failure risk are the natural fit for central heating cover; those with a newer, well-maintained system may reasonably choose to self-insure instead.
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Editorial disclaimer This guide is informational and educational only. Kaeltripton.com is an independent editorial publisher: it runs no quote lines, routes no leads and takes no commission from any provider named on this page. Tariff details, allowances and perks change frequently: verify current terms directly with the provider and with Ofcom before switching. Kael Tripton Ltd is not authorised or regulated by the FCA. |
Frequently asked questions
What does central heating cover include that boiler-only cover doesn't?
Central heating cover extends to radiators, pipework, heating controls and thermostats, and often the hot water cylinder, none of which are protected under a boiler-only policy that covers just the boiler unit itself.
Is central heating cover worth it for an older system?
It tends to be more worthwhile for older systems, where ageing pipework, radiators and controls carry a higher failure risk than a boiler alone, and where those parts sit outside a boiler-only policy's scope entirely.
Does central heating cover include an annual service?
Many policies include or require an annual service visit as part of the cover, but this varies by provider, so it is worth confirming whether servicing is bundled into the price or charged as an extra.
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