Hot Water Performance Investigation

What a hot water performance investigation covers

This service is designed to identify the root cause of hot water performance issues and set out the most effective fix.

• Checks of hot water temperature, flow rate and recovery time
• Fault-finding on cylinders, immersions, thermostats and controls
• Review of mixing and balancing valves that can reduce temperature
• Checks for pressure and flow restrictions, scale and failing components
• Safety checks on relevant parts of the hot water system
• Clear explanation of what has failed, what can be repaired, and what may need replacing

When this service is a good fit

• Hot water is lukewarm, fluctuates, or goes cold quickly.
• Hot water pressure is weak at taps or showers.
• The cylinder takes too long to reheat, or runs out faster than it used to.
• You have an immersion heater that is not heating properly or is tripping.
• You suspect a control or valve issue, not just a simple tap problem.
• You are a landlord or small business and need a documented, practical route to restore reliable hot water.

What happens during the visit

The engineer will ask about the symptoms, when they started, and which outlets are affected. They will then test the hot water performance and inspect the key components that control temperature, pressure and recovery.

If your property has an unvented cylinder, the work will be carried out by an appropriately certified engineer. Where a repair is straightforward and parts are available, you will be advised on options before any additional work is done.

What you get afterwards

You will receive a clear explanation of the cause of the problem and the recommended fix. If parts or follow-on work are required, you will be given a transparent scope of work so you can decide how to proceed. Where helpful, you will also get advice on settings, usage, or minor improvements that protect performance and reduce repeat issues.