--- title: "Investigations & Diagnostics | Northstar Plumbing" description: "Get clear answers on plumbing and heating issues in Brighton. Accurate diagnostics, transparent pricing, and a practical plan to fix the problem." canonical: "https://www.northstarplumbing.co.uk/service-categories/investigations-and-diagnostics" --- # Investigations & Diagnostics When a leak, loss of pressure or heating fault is hard to trace, our Investigations & Diagnostics service finds the root cause quickly. Expect methodical checks, clear explanations, and a practical recommendation you can act on. Our Investigations & Diagnostics appointments are for situations where the cause is unclear and you want certainty, not guesswork. We take a structured approach: listen to the symptoms, inspect what is accessible, run targeted tests, then explain what we have found in plain English. You will get a clear next step, whether that is a repair, a performance improvement, or advice on monitoring. We focus on solving the underlying issue to reduce repeat call outs, with transparent pricing and tidy, respectful working in occupied homes and premises. 5 out of 5 (19 reviews) - > “Called them out for a heating fault we could not identify ourselves. It's been fine since—no repeat problems. Updates came through as expected, which I appreciated. Wouldn't hesitate to recommend them.” — Ollie B. ![Cool-toned 3D render of a tidy utility room with an open pipework access panel and a diagnostic tool workstation, leaving negative space to one side.](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fdiagnostic_workstation_concealed_pipework_access_3d_render.png%3Fv%3D1770397985324&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) ![Worker's gloved hands pressing blue tubing into reflective underfloor heating panels](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fgloved-hands-installing-underfloor-heating-tubing.jpg%3Fv%3D1768575113209&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ)![3D render of an orderly home safety inspection kit on a utility countertop with a blurred cabinet background and cool professional lighting.](/_next/image?url=%2Fapi%2Fmedia%2Ffile%2Fhome_safety_inspection_kit_3d_render.png%3Fv%3D1770397992316&w=1536&q=75&dpl=dpl_DEc4fGhEc1SCRZZutzoEsRuDy1CJ) - ## Water Loss Investigation Find the cause of unexplained high water use. Structured checks and testing to locate hidden leaks, confirm the fault, and advise the right repair with clear written findings. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/water-loss-investigation) - ## Underfloor Heating Fault Investigation A focused diagnostic visit to pinpoint underfloor heating faults, from control and wiring issues to flow problems, with a clear report and repair options for homes and rentals. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/underfloor-heating-fault-investigation) - ## System Performance Assessment A structured assessment to pinpoint faults and inefficiencies in your plumbing or heating system, with test results explained and next-step options in writing. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/system-performance-assessment) - ## Plumbing Fault Investigation A systematic investigation to pinpoint hidden plumbing faults, explain what’s happening, and set out the safest, most cost-effective repair options. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/plumbing-fault-investigation) - ## Noise Investigation (Plumbing & Heating) Structured fault-finding to pinpoint the cause of plumbing or heating noises, with clear findings, risk checks and practical recommendations for the right fix. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/noise-investigation-plumbing-and-heating) - ## Low Water Pressure Investigation Structured investigation to find why water pressure or flow is low. Includes checks, testing and a clear report with repair recommendations and next steps. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/low-water-pressure-investigation) - ## Leak Detection Investigation If you have damp patches, low pressure or unexplained bills, this leak detection investigation locates the source and sets out repair steps with minimal disruption. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/leak-detection-investigation) - ## Hot Water Fault Investigation A structured hot water fault investigation to diagnose the real cause of no hot water, low pressure or temperature swings, with clear findings and next-step repair options. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/hot-water-fault-investigation) - ## Heating System Fault Investigation Book a focused investigation when your heating is behaving oddly. We test components and controls to pinpoint the fault, then recommend the safest fix. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/heating-system-fault-investigation) Show more services - ## Heat Pump Fault Investigation Book a heat pump fault investigation to pinpoint why your system is underperforming. You will receive tested findings, likely causes, and a clear repair plan. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/heat-pump-fault-investigation) - ## Drainage Issue Investigation Professional drainage fault-finding for homes, rentals and small sites. We pinpoint the cause of ongoing drain problems and advise the most cost-effective fix. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/drainage-issue-investigation) - ## Boiler Fault Investigation A diagnostic visit to identify what’s causing your boiler problem, with clear results and next steps so you can authorise the right repair with confidence. * * * [Contact Us](https://www.northstarplumbing.co.uk/redirect)[View Service](/services/boiler-fault-investigation) ## Frequently Asked Questions What can I expect during an investigations and diagnostics visit? We start by discussing what you have noticed, then carry out systematic checks and targeted tests. We explain findings clearly and confirm the recommended next step before any further work is agreed. Will I know the cost before any further work is done? In most cases, the diagnostic visit cost can be confirmed upfront. If follow-on work is needed, we will outline options and likely costs before proceeding so you can make an informed decision. How long does diagnostics usually take? Timing depends on the complexity of the issue and access to key components. Many faults can be identified within a visit, but some require staged testing or observation, and we will set expectations early. How can I prepare to help you diagnose the problem faster? If you can, note when the issue occurs and any patterns you have noticed. Please make sure we can access relevant areas such as key valves, meters, visible pipework, and equipment, and share any past repair details. Is this category suitable for homeowners, landlords, and small businesses? Yes. Diagnostics is ideal when you need a clear explanation of the cause and the best route to restore reliable operation. We keep communication straightforward and can coordinate with tenants or on-site contacts where needed.