Investigations & Diagnostics

System Performance Assessment

A System Performance Assessment is a structured check of your plumbing or heating system to pinpoint why it is not working as it should. It is ideal when you have symptoms (poor heat, low pressure, inconsistent hot water, recurring leaks) but the root cause is unclear. You get clear, practical findings and recommended next steps, so you can make confident decisions about repairs or improvements.

More information

What the assessment covers

The aim is to move from symptoms to a clear diagnosis, using a methodical approach rather than guesswork.

  • Review of reported problems and system history
  • Visual inspection of key components and accessible pipework
  • Pressure, flow and temperature checks (where applicable)
  • Checks for leaks, air ingress, blockages and restrictions
  • Radiator performance checks (cold spots, balancing, heat distribution)
  • Heating controls and thermostat behaviour review
  • Identification of likely causes and contributing factors
  • Clear recommendations, prioritised by urgency and impact

When this service is most useful

This assessment is a good fit if you need answers before committing to further work, or if previous fixes have not solved the problem. Common reasons include:

  • Radiators not heating evenly or taking a long time to warm up
  • Boiler cycling, noisy operation, frequent pressure drops or fault codes
  • Hot water temperature fluctuating or running out quickly
  • Ongoing damp patches or suspected hidden leaks
  • Low flow at taps or poor shower performance
  • High running costs with no obvious reason

How the visit works

You will be asked a few focused questions about the symptoms, when they occur, and any recent changes or repairs. The system is then checked in a logical order, with targeted tests to confirm or rule out the most likely causes.

Where safe and appropriate, you will be talked through what is being found as the checks progress. If any immediate risks are identified, these will be highlighted straight away.

After the assessment

You receive a clear summary of what has been identified, what is most likely causing the issue, and what to do next. Recommendations are practical and proportionate, from simple adjustments and maintenance through to repairs or upgrades if needed.

If remedial work is required, you can use the findings to plan the next step with clarity, compare options, and avoid repeat call-outs for the same unresolved fault.

Frequently Asked Questions

When should I book a system performance assessment?
Book one when you have ongoing symptoms but no clear diagnosis, or when fixes keep failing to resolve the issue. It is also useful before spending on major repairs to confirm the real cause.
What is included in the assessment?
It includes a structured inspection and appropriate tests to check how your plumbing or heating system is performing. You will get clear findings and recommended next steps based on what is discovered.
Will faults be fixed during the same visit?
This visit is primarily for diagnosis and reporting. If a small, straightforward issue is found and it is safe to resolve on the spot, it may be possible, but it depends on access, parts and time.
How long does a performance assessment take?
Timing depends on the type of system and how complex the symptoms are. Once the key checks are complete, you will be given a clear explanation of the findings and what to do next.
What will I receive after the assessment?
You will receive a clear summary of the likely cause of the problem and practical recommendations. Where relevant, actions will be prioritised so you know what needs doing first and what can wait.

Related Services

Complete your experience with these services

  • Water Loss Investigation
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  • Underfloor Heating Fault Investigation
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  • Plumbing Fault Investigation
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  • Noise Investigation (Plumbing & Heating)
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  • Low Water Pressure Investigation
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  • Leak Detection Investigation
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  • Hot Water Fault Investigation
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  • Heating System Fault Investigation
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  • Heat Pump Fault Investigation
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  • Drainage Issue Investigation
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  • Boiler Fault Investigation
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