Unvented Hot Water Cylinders in Worcester
Unvented cylinders give mains-pressure hot water to every outlet in the house, which is why they suit properties with more than one bathroom. They are also pressurised vessels, so installation and servicing must be done by a qualified engineer and certified. We install, service and certify unvented systems across Worcestershire.
What the work involves
Carried out by our own Gas Safe registered engineers — we do not subcontract the work out.
Installation
Cylinder sized to the property, with correct discharge pipework and safety devices.
Annual servicing
Expansion vessel charge, safety valves and controls checked as required.
Certification
Work carried out and certified by G3 qualified engineers.
System integration
Cylinders paired with system boilers or immersion back-up.
Fault finding
Discharging valves, poor recovery and pressure problems diagnosed and fixed.
Common problems we see
- Weak hot water pressure at upstairs outlets
- Loft tanks you want removed
- Water discharging from the outside tundish pipe
- Slow hot water recovery with multiple bathrooms
- An unvented cylinder that has never been serviced
Why choose A-Select
- Mains-pressure hot water throughout the property
- Loft tanks and pipework can often be removed
- Installed and certified by qualified engineers
Who this service suits
Properties with two or more bathrooms, homes being renovated or extended, and anyone converting away from a gravity-fed system.
Unvented Hot Water — your questions answered
Do unvented cylinders need servicing?
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Yes, annually. The expansion vessel and safety devices need checking — an unserviced unvented cylinder is both less reliable and less safe.
Why is water dripping from the outside pipe?
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That is the tundish discharge, and it usually means a safety valve is passing or the expansion vessel has lost its charge. It should be investigated rather than ignored.
Can I have an unvented cylinder with a combi boiler?
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Combis heat water on demand and do not normally use a cylinder. Unvented cylinders pair with system or regular boilers.
Is my mains supply good enough?
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We test the incoming flow rate and pressure before recommending an unvented system — that measurement decides whether it is suitable.
Related services
Book unvented hot water in Worcester
Call the office Monday to Friday, 8:00 to 17:30, or send us the details and we will come back to you with a quote.