Boiler Sensor Replacement

What boiler sensor replacement covers

A boiler relies on sensors to monitor temperature, pressure, and water flow. When one fails or drifts out of range, the boiler can shut down or operate unpredictably. This service is designed to restore safe, stable heating and hot water.

• Read fault codes and symptoms to pinpoint the likely sensor issue
• Test temperature, pressure, and flow readings and related wiring
• Replace the faulty sensor with a suitable part
• Check boiler operation after repair (heating, hot water, and safety controls)
• Provide clear findings and next steps if another fault is also present

When this service is the right fit

Sensor issues often show up as repeated fault codes, short cycling, unstable hot water temperature, or the boiler cutting out when demand changes. It can also help where radiators are not heating evenly due to control and temperature feedback problems. If you are a landlord or manage a small property portfolio, fast diagnosis can help reduce downtime and avoid repeat call-outs.

What happens during the visit

The engineer will start with a structured fault finding check, using the boiler’s diagnostics alongside physical testing to confirm whether the sensor is at fault or if another component is causing the same symptom. Once confirmed, the failed sensor is replaced and the system is rechecked under normal running conditions. Any gas work is completed by a Gas Safe registered engineer.

After the repair

You will be advised on what caused the fault where it is identifiable, and what to watch for over the next few days. If the sensor failure points to a wider issue (such as pressure problems, circulation faults, or scale), you will get practical options for resolving it. This helps prevent the same error returning and supports longer, more reliable boiler performance.