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Unvented Hot Water Cylinder Installation and Plumbing Work in North London

Boiler Installation & Repair October 2025
An ONYX hot water cylinder with expansion vessels, copper pipework and heating controls in a plant cupboard.
An overview of the existing hot water cylinder and connected heating equipment.
A plumber working on the controls beside an ONYX hot water cylinder and expansion vessels.
Working on the heating controls alongside the existing cylinder system.
A plumber working on copper pipe connections beside a hot water cylinder in a plant cupboard.
Careful work on the cylinder pipework and connections.
A plumber working on a lower pipe connection at the base of an ONYX hot water cylinder.
Accessing the lower cylinder connections during the plumbing work.
A plumber using tools on the copper pipework beside a hot water cylinder during installation work.
Working on the cylinder connections within the existing installation.
Close view of an ONYX hot water cylinder, copper pipework, expansion vessels and circulation pump.
A closer look at the cylinder and the associated heating components.

About this job

The customer needed plumbing work carried out on an existing hot water cylinder system. The work involved the cylinder, associated pipework and heating controls within a dedicated cupboard area.

  • hot water cylinder
  • unvented hot water system
  • cylinder plumbing
  • copper pipework
  • plumbing and heating
  • mill hill
  • north london plumber
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