Radiator Repair Woking
Cold radiators, leaks, noisy valves, sludge build-up — we diagnose and fix all radiator problems across Woking and Surrey. Fast response, fixed prices, 12-month warranty.
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Tell us the problem — we'll call you back fast.
No obligation · Replied to within the hour · 7am–9pm
Why Is My Radiator Cold?
Cold radiators are one of the most common heating complaints we deal with across Woking homes in winter. The cause — and solution — depends on where the radiator is cold.
Cold at the top
Trapped air preventing hot water from circulating fully. Fixed by bleeding the radiator with a radiator key to release the air.
Cold at the bottom
Sludge build-up — rust and debris settling at the base, blocking water flow. Requires a targeted radiator flush or power flush.
Cold all over
Closed valve or system balancing issue. We check the valves and balance the system so heat reaches every radiator.
Some hot, some cold
System imbalance — the nearest radiators steal all the flow. We balance the system so heat distributes evenly throughout.
Radiator valve leak
Leaking TRV or lockshield valve. We identify the source and replace the failed valve — usually in a single visit.
Bleed valve leak
Radiator bleed valve won't seal after bleeding. We replace the bleed valve and restore a proper seal.
Pinhole leak in radiator body
Internal corrosion has caused a pinhole in the radiator panel. We replace the radiator and dose the system with inhibitor to prevent recurrence.
Noisy radiator or pipes
Kettling, clicking, or gurgling from the radiator or pipework. Usually air, sludge, or a pump issue. We diagnose and fix the root cause.
Radiator Repair Costs — Woking 2026
Fixed price given before starting. All parts included.
Radiator FAQs — Woking
Why is my radiator cold at the bottom?
A radiator that is warm at the top but cold at the bottom almost always contains sludge — a build-up of rust and debris from the heating system settling at the base. This blocks water flow through the lower half of the radiator. The solution is a power flush or a targeted radiator flush to clear the blockage.
Why is my radiator cold at the top?
A cold top on a radiator indicates trapped air preventing hot water from circulating fully. The fix is simple: bleeding the radiator with a radiator key to release the air. If the radiator fills with air repeatedly, there may be a deeper issue with your system — we'll investigate.
Why is my radiator leaking?
Radiator leaks most commonly come from the radiator valve (either the thermostatic TRV or lockshield valve), the bleed valve, or a pinhole in the radiator body caused by internal corrosion. We identify the source and repair or replace as needed.
How much does radiator repair cost in Woking?
Radiator bleeding typically costs £65–£90 per visit. TRV replacement is usually £80–£140. Radiator replacement (supply and fit) costs £150–£350 depending on radiator size and type. A full power flush is typically £300–£500 for a standard-sized home.
What is a power flush and do I need one?
A power flush is a deep clean of your central heating system that removes sludge, rust and scale. Signs you may need one include multiple cold radiators, noisy pump, slow heating, and frequent radiator bleeding. We assess your system and recommend the right solution.
Request Your Free Quote
Describe your plumbing issue and we'll get back to you with a free, no-obligation quote — usually within hours.