Central Heating System Health Check London

A boiler service checks the boiler. A system health check looks at everything the boiler is connected to — radiators, pipework, controls and the water inside the system — because a perfectly serviced boiler can still heat a home poorly if the rest of the system isn't pulling its weight.

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We assess radiator performance across the property, check the system's controls and thermostat setup, and look for common signs of an ageing or neglected system: cold spots on radiators, uneven heating between rooms, or a boiler that short-cycles more than it should.

This is particularly useful before winter, before letting a property, or if a home has never had the heating system looked at as a whole rather than appliance by appliance.

Health check pricing depends on system size and property type. See our pricing page for typical UK market ranges, or combine with an annual boiler service.

What you get

Whole-system assessment, not just the boiler — radiators, pipework and controls included.
Radiator-by-radiator check for cold spots, uneven heating and circulation issues.
Controls and thermostat review, checking the setup is actually being used effectively.
System pressure and general condition assessed against what would normally be expected.
Plain-language summary of findings, with any recommended follow-up work quoted separately.
Carried out by fully Gas Safe registered engineers alongside routine service visits where useful.

How it works

A method, not a guess

Book a Health Check

Tell us a little about the property — number of radiators, age of the system, and any specific complaints like cold rooms.

Whole-System Assessment

The engineer checks radiators, pipework, controls and system pressure, not just the boiler itself.

Findings Explained

You get a plain-language summary of what was found — what's fine, what's worth watching, and what needs attention.

Follow-Up Quoted Separately

Anything beyond the check itself, such as a power flush or radiator work, is quoted on its own before any further work begins.

Questions

Heating Health Check FAQs for London homeowners

How is a health check different from a boiler service?

A boiler service focuses on the boiler itself — its internal components and safety devices. A health check looks at the whole heating system around it: radiators, pipework, controls and system pressure.

What are the signs my heating system needs a health check?

Cold spots on radiators, some rooms heating unevenly compared to others, a boiler that cycles on and off more frequently than expected, or a system that's never had anything beyond the boiler itself looked at are all reasons to book a check.

Will a health check tell me if I need a power flush?

Yes — if the engineer finds signs consistent with sludge or debris circulating in the system, such as cold radiator bottoms, they'll explain what they found and quote a power flush separately if it's the right next step.

Is this useful before selling or letting a property?

Yes — a written summary of the heating system's condition is useful for landlords preparing a property for new tenants, and for anyone wanting a clear record of the system's state.