Unvented Cylinders in Belper
Installation, replacement, servicing and fault finding for unvented hot-water cylinders, giving strong mains-pressure hot water without a cold-water storage tank.
Reliable mains-pressure hot water
An unvented cylinder stores hot water directly from the mains supply. It can be an excellent option for homes with more than one bathroom or where good shower performance and a strong hot-water supply are important.
- New and replacement unvented cylinder installations
- Fault finding, servicing and safety checks
- Immersion heater, valve and control faults
- Cylinder sizing for household hot-water demand
- System alterations and tidy pipework
- Advice on upgrading older vented systems
Mains pressure
Strong hot-water delivery at taps and showers where the incoming supply is suitable.
More hot water
Useful for busy homes, larger baths and multiple bathrooms.
Space saving
No traditional loft cold-water storage tank is required.
Safety controls
Expansion, temperature and pressure safety devices form an essential part of the system.
What we check on an unvented cylinder
Unvented systems operate differently from traditional vented cylinders, so the safety devices, expansion provision and controls need to be working correctly. We inspect the system as a whole rather than treating the cylinder as an isolated component.
- Temperature and pressure relief components
- Expansion vessel or internal expansion provision
- Tundish and discharge pipework
- Immersion heaters and thermostats
- Motorised valves and cylinder controls
- Visible leaks, scale and signs of deterioration
Frequently asked questions
What is an unvented cylinder?
It is a sealed hot-water storage cylinder supplied directly from the mains rather than from a loft tank. The system uses expansion and safety devices to control pressure and temperature.
Can an unvented cylinder improve shower pressure?
It can provide strong hot-water flow, but performance still depends on the incoming mains pressure and flow rate. We assess the property before recommending a cylinder size or system change.
Do unvented cylinders need servicing?
Regular checks are sensible because the safety devices, expansion provision and controls need to operate correctly. Manufacturer requirements should also be followed.
Can you replace an old vented cylinder?
Often yes, subject to the incoming mains supply, available space, pipework and discharge arrangements. A site assessment is the best way to confirm the right approach.
What happens if the tundish is dripping?
Water passing through the tundish can indicate a safety or expansion issue and should be investigated rather than ignored.
Tell us about your heating project.
Send us a few details and we’ll come back to you with the most suitable next step. You can also call us if you would rather discuss the job directly.