Gledhill Cylinder Servicing & Repair
G3 qualified annual servicing and repair for Gledhill StainlessLite Plus and older Gledhill unvented cylinders — direct, indirect, slimline and heat pump models — across Orpington, Bromley, Sevenoaks and Kent. £140 with no VAT.
Gledhill Servicing
- £140 full G3 annual service, no VAT
- £285 cylinder + heat pump together
- StainlessLite Plus, slimline & heat pump models
- Expansion vessel set to your mains
- Written record for your guarantee file
Know Your Gledhill
Gledhill makes its cylinders in Blackpool, and you'll find them in airing cupboards and lofts all over South East London and Kent, most often from the StainlessLite Plus range. They come direct (heated by immersions only), indirect (heated through a coil by a boiler or heat pump), in slimline versions for narrow cupboards, and in heat pump versions with a larger coil.
Gledhill pressure-tests its cylinders to 12 bar at the factory and supplies them with an expansion vessel and a temperature and pressure relief valve. It quotes a 25-year guarantee on its unvented cylinders, with the full terms in the installation manual — and a dated service record is the simplest way to keep that guarantee easy to use.
Some Gledhills are pre-plumbed, 'system ready' models, with the pump, valves and expansion vessel mounted on the cylinder. Tidy, but it puts more components in one cupboard that need checking.
What I Check on a Gledhill
Expansion vessel charge
Measured with the cold supply isolated and a hot tap open, then set to suit your incoming pressure and the cylinder instructions. A vessel left at its factory charge is behind most relief-valve problems.
The inlet control group
The pressure reducing valve, strainer and check valve on the cold feed. The strainer is cleaned and the outlet pressure checked — too high and the relief valves suffer, too low and the showers do.
Both relief valves, operated by hand
The expansion relief valve and the temperature and pressure relief valve are opened and watched, to make sure they discharge visibly at the tundish and reseat cleanly.
Thermostats and cut-outs
Direct Gledhills have immersion heaters with their own thermostats and thermal cut-outs; indirect ones have a cylinder thermostat and the two-port valve it controls. All are checked so the stored temperature stays at a safe level.
Pre-plumbed components
On system-ready models, the pump, motorised valves and any heating-side vessel are part of the visit too, because a fault in one shows up as a hot water problem.
Gledhill Faults I See Most
Water at the tundish after a reheat
A relief valve has opened because expansion had nowhere to go — nearly always the vessel. Recharged or replaced, and the valve checked for debris on its seat.
Immersion failure on direct models
Direct cylinders rely entirely on their immersions. A failed element or a stuck thermostat shows up as lukewarm or no hot water. Both are replaceable.
Hot water pressure falling away
A silted strainer or a tired pressure reducing valve on the cold feed.
Noisy reheats
Scale on an immersion element in our hard water, or a valve hammering. Worth tracing before it gets worse.
What It Costs
A full G3 annual service of a Gledhill cylinder is £140 with no VAT, and you get a written inspection record. If you have a heat pump as well, servicing both in one visit is £285.
Repairs — a vessel, a valve cartridge, an immersion — are quoted at a fixed price before I start. Most Gledhill faults are a component, not the cylinder, and I will tell you honestly if yours is the exception.
No call-out fee, and I'm not VAT-registered, so the price I quote is the price you pay.
Gledhill Cylinder Questions
Book Your Gledhill Service
£140 with no VAT and a written inspection record, across Orpington, Bromley, Sevenoaks and Kent.
07717 846247
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Brands and faults I deal with every week.