Quick answer
CombiCert is a Gas Safe registered (621146) heating company in Telford that finds and fixes central heating faults, from cold radiators and noisy pipes to failed pumps, valves and controls. Central heating repairs start from £90 + VAT for the visit and diagnosis. Call or WhatsApp 07393 220694, Monday to Saturday, 08:00 to 19:45.
Common central heating problems we fix
| Symptom | Likely causes we check |
|---|---|
| No heating, but hot water works | Thermostat or timer settings, a stuck diverter or zone valve, a failed motorised valve head, wiring or control faults |
| Radiators cold at the top | Air in the system; bleed the radiator and recheck the boiler pressure |
| Radiators cold at the bottom or patchy | Sludge and magnetite build-up in the system |
| Some radiators hot, others cold | System not balanced, a stuck thermostatic radiator valve, a closed lockshield valve or a weak pump |
| Boiler pressure keeps dropping | A leak on pipework or a radiator valve, a failed pressure relief valve or an expansion vessel that needs recharging. See boiler losing pressure. |
| Banging, gurgling or kettling noises | Air, poor circulation, a failing pump or scale and sludge in the heat exchanger |
| Heating will not turn off | A sticking zone valve, a faulty programmer or thermostat, or a wiring fault |
Simple checks before you call
- Check the thermostat is set above room temperature and the timer or app is calling for heat.
- Check the boiler display for a fault code and look it up in our fault code search.
- Check the pressure gauge: most sealed systems sit at about 1 to 1.5 bar when cold.
- Bleed radiators that are cold at the top, then recheck the pressure.
- Make sure thermostatic radiator valves are open.
If the problem is with the boiler itself, see boiler not working. Never remove the boiler case: only a Gas Safe registered engineer may work on gas appliances.
How we diagnose a central heating fault
We start with the controls and work back through the valves, pump and boiler, testing each part before we replace anything. Once we know what has failed, we tell you the cost of the repair before starting. If the system is full of sludge, we explain the options and leave the decision with you.
Controls and upgrades
Many heating problems come from controls rather than the boiler. We can replace programmers, room thermostats and thermostatic radiator valves, and fit a magnetic system filter to protect the boiler. Our heating controls FAQs answer the common questions. If your boiler is old or unreliable, our new boiler page explains replacement, from £1,750 inc VAT, subject to a site inspection.
Prices
| Boiler service | From £90 + VAT |
|---|---|
| Boiler repair (visit and diagnosis) | From £90 + VAT |
| Homeowner gas safety check | From £90 + VAT |
| Landlord gas safety certificate (CP12) | £90 inc VAT |
| Gas pipe check | £80 + VAT |
| New boiler, supplied and fitted | From £1,750 inc VAT, subject to a site inspection |
| Opening hours | Monday to Saturday, 08:00 to 19:45 |
Areas we cover
- Telford
- Wellington
- Madeley
- Dawley
- Oakengates, Donnington and Priorslee
- Ironbridge
- Broseley
- Shifnal
- Newport
- Shrewsbury
- Bridgnorth
- Much Wenlock
Why CombiCert
CombiCert Ltd is a Gas Safe registered (621146) gas and heating company in Telford, Shropshire, run by director Peter Jefferson since 2019 and rated 5.0 from 55 Google reviews.
- Gas Safe registered: business registration 621146, which you can check on the Gas Safe Register.
- Director-led: a small team of 2 to 5 people led by Peter Jefferson.
- Established: CombiCert Ltd, company number 12155826, incorporated 14 August 2019.
- Rated 5.0: from 55 Google reviews.
- Published prices: service, repair or homeowner gas safety check from £90 + VAT, CP12 £90 inc VAT, gas pipe check £80 + VAT, new boilers from £1,750 inc VAT.
Central heating engineer in Telford: FAQs
How much does a central heating repair cost in Telford?
Central heating repairs from CombiCert start from £90 + VAT, which covers the visit and diagnosis on a domestic system. Once we have tested the controls, valves, pump and boiler, we tell you what has failed and what the repair will cost before any work starts, so you can decide.
Why is my heating not working when the hot water is?
On a combi or a system with zone valves, that usually points to the controls, a stuck diverter valve or a failed zone valve rather than the boiler itself. Check the thermostat and timer first. If they are calling for heat and the radiators stay cold, a Gas Safe engineer should test the valves.
Why are my radiators cold at the bottom?
Radiators that are warm at the top and cold at the bottom usually contain sludge, a build-up of magnetite and debris from inside the system. It reduces heat output and can strain the boiler. We can confirm the cause on a visit and explain the cleaning and filter options before any work.
Do you work on heating systems all over Telford?
Yes. We cover Telford, including Wellington, Madeley, Dawley, Oakengates, Donnington, Priorslee and Ironbridge, plus Shifnal, Broseley, Newport, Shrewsbury, Bridgnorth and homes across Shropshire. Call or WhatsApp 07393 220694, Monday to Saturday from 08:00 to 19:45, with your postcode and the problem you have.
Heating not working properly?
Call or WhatsApp 07393 220694, Monday to Saturday, 08:00 to 19:45. Repairs from £90 + VAT by Gas Safe registered engineers (621146).