What is an unvented cylinder?+
A pressurised hot water cylinder fed directly from the mains. It stores hot water at full mains pressure, so every outlet in the house — including upstairs showers — runs at strong, even pressure without a loft tank.
Do I need mains pressure and flow to fit one?+
Yes. Unvented cylinders need a certain minimum mains flow rate and pressure to work well. We flow-test before quoting rather than assuming — if the mains isn't strong enough, we'll say so.
Do unvented cylinders need annual servicing?+
Yes. Building Regulations require an annual service by a qualified engineer to inspect and test the safety devices. Skipping it invalidates the manufacturer warranty and lets faults build up unnoticed.
Are unvented cylinders safe?+
Yes — when installed and serviced by a G3 qualified engineer and set up with compliant discharge pipework. The safety devices on a properly maintained cylinder are extremely reliable.
Can any plumber install one?+
No. Installation of unvented cylinders is covered by Building Regulations Part G3 and requires a qualified engineer. We hold the required qualification and issue a G3 install certificate with every job.
How long do unvented cylinders last?+
That depends on brand, water quality and how well they're serviced. A quality cylinder that gets its annual service will typically last well over a decade — often longer.
Can I have one with an air source heat pump?+
Yes — but you need a heat-pump-ready cylinder with a larger coil designed for lower flow temperatures. We specify these as part of our air source heat pump installs.
Is the work guaranteed?+
Yes. Every install carries a 12-month workmanship guarantee on top of the manufacturer warranty on the cylinder itself.
What areas do you cover?+
Rochdale, Oldham, Manchester, Salford, Bury, Ashton-under-Lyne, Heywood, Middleton, Shaw and surrounding Greater Manchester areas.
