Hot Water System Upgrade

What a hot water system upgrade can include

Every property is different, so upgrades are planned around your existing system, water supply and usage.

• Assessment of your current cylinder, pipework, valves and controls
• Fault diagnosis where performance issues are unclear
• Cylinder replacement or resizing to match demand
• Immersion heater replacement and wiring checks (where applicable)
• Thermostats, motorised valves and time and temperature controls
• Safety components such as temperature and pressure relief valves and expansion vessels
• Unvented hot water cylinder upgrades and compliance work (certified installation)
• Commissioning, performance testing and system set up

When an upgrade makes sense

You may benefit from an upgrade if hot water runs out quickly, takes too long to recover, or varies from tap to tap. It is also worth considering if you have added bathrooms, changed occupancy, or are planning wider heating or bathroom work. Landlords often upgrade to improve reliability and reduce callouts while keeping the system compliant.

How the service is delivered

The work usually starts with a site visit to identify your system type (vented or unvented), capacity, and any constraints such as cupboard space and access. You will then receive a clear plan for what will be changed, what will be reused, and how long the hot water will be off.

On the day, the system is isolated and drained as needed, components are replaced or upgraded, and pipework is made good. The system is then refilled, checked for leaks, brought up to temperature and tested so you can be confident it is operating safely.

After the upgrade: handover and ongoing value

You will be shown how the controls work and what settings are recommended for comfort and efficiency. For unvented systems, relevant certification and commissioning records are provided. If you want to keep performance stable long term, planned servicing can help spot worn safety devices and prevent unexpected failures.