Unvented Cylinder Installation
Unvented cylinder installation gives you strong, consistent mains-pressure hot water without relying on a loft tank. It is a practical upgrade for better showers, faster bath fills, and reliable hot water delivery, provided the system is designed, installed and commissioned with the correct safety controls.
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What unvented cylinder installation covers
A complete supply and fit service, focused on safe performance and dependable hot water.
- Assessing your hot water demand, incoming mains pressure and available space
- Helping you choose the right cylinder size and specification for your property
- Installing the cylinder and connecting hot, cold and primary (if applicable) pipework
- Fitting required safety components such as pressure reducing valve, expansion control and temperature and pressure relief protection
- Correctly installing tundish and discharge pipework to current requirements
- Commissioning, testing and setting the system up for safe operation
- Clear handover on how the controls work and what to monitor
When this service is the right fit
Unvented cylinders suit properties that need better flow and pressure at multiple taps.
- Low pressure hot water from a gravity-fed cylinder
- Multiple bathrooms or busy household hot water demand
- Renovations, extensions and bathroom upgrades
- Landlord replacements where compliance and reliability are priorities
- Small commercial premises needing consistent hot water delivery
How installation works
Work typically starts with checks on mains pressure and flow, then confirming the cylinder location, pipe routes and safety discharge route. The old cylinder is isolated and removed where applicable, then the new unit and safety kit are installed, connected and insulated as required. Finally, the system is filled, tested and commissioned so pressures, temperatures and safety devices operate correctly.
After installation: ongoing value and support
You will get guidance on normal operating pressures, what the tundish is for, and what signs suggest a fault. If you book periodic servicing, key safety devices can be checked and the system kept running efficiently. If performance drops, fault diagnosis can usually be targeted quickly because the installation has been set up and tested properly.
Frequently Asked Questions
Do I need a certified engineer for an unvented cylinder?
How long does an unvented cylinder installation take?
What size unvented cylinder do I need?
Can you remove and dispose of the old cylinder?
Will the installation meet Building Regulations requirements?
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