Unvented & Vented Cylinders
Supply, installation, servicing and repair of unvented and vented hot-water cylinders for powerful, reliable hot water.
Want strong, mains-pressure hot water to every tap and shower? A correctly installed unvented cylinder delivers it, safely certified and built to last.
Unvented cylinders give excellent hot-water pressure without a loft tank. They must be installed and serviced by a qualified engineer for safety, which is exactly what we do.
We supply and fit new cylinders, service existing ones (including the safety components), and repair faults such as leaks, poor recovery and discharging valves.
What we cover
- Unvented cylinder supply & installation
- Vented cylinder replacement
- Annual cylinder servicing
- Expansion vessel & valve checks
- Leak & discharge fault repair
- Immersion & thermostat replacement
Common questions
Why does my unvented cylinder need annual servicing?
Unvented cylinders contain safety components (like the expansion vessel and pressure-relief valves) that must be checked yearly to keep the system safe and within warranty.
Water is dripping from an outside pipe. Is that normal?
Occasional discharge can be normal, but continuous dripping usually points to a fault. We'll diagnose and fix it before it wastes water or causes damage.
Strong, reliable hot water.
Supply, installation, servicing and repair of unvented and vented hot-water cylinders for powerful, reliable hot water.
Signs it's time to get in touch
Spotted one of these? It's worth a quick call. Early attention usually means a simpler, cheaper fix.
- Weak or inconsistent hot-water pressure
- Slow hot-water recovery after use
- Water dripping from the outside pipe
- Rumbling or knocking from the cylinder
- A cylinder that's never been serviced
- Planning a new bathroom or extension
Why homeowners & managers choose us
Gas Safe registered
Every gas job carried out and certified to current regulations (535881) by qualified engineers.
Genuine specialists
Real depth on boilers and HIUs means quicker diagnosis, cleaner work and fewer return visits.
Fair, fixed pricing
A clear, fixed quote before we start. No hidden extras, no surprises and no pressure.
No heat or hot water? Let's sort it.
Gas Safe registered engineers across South-East London. Free quotes, fair prices, fast response.