Where’s the job?

Scope of Works

• Inspect boiler and controls to diagnose fault and read error codes

• Check gas supply, pressure and basic gas tightness where applicable

• Test ignition, flame, pump operation, diverter valve and thermostat function

• Replace common worn parts such as seals, sensors, pumps or valves with customer approval

• Advise on and fit chemical treatment or recommend powerflush if system contamination found

• Recommission boiler, check pressure and for leaks, and provide a written report and next‑step estimate.

Typical Cost

Time on Site

Most diagnosis and minor repairs take 1–3 hours; replacing major components or waiting for ordered parts can extend work to 2–4 hours or require a return visit

Questions to Ask Your Tradie

• Are you Gas Safe registered and can you show your registration number and ID?

• What is the likely cause and can you provide a written estimate before ordering parts?

• What warranties do parts and labour come with and how long do they last?

• If a part is unobtainable, will you fit a temporary fix or return when the part arrives and will that cost extra?

• Do you need access to lofts, airing cupboards or to isolate the central heating during work?

• How will you test the boiler after repair and will you leave a written record or Gas Safe certificate?

How to Avoid Surprises

• Ensure engineer has clear, safe access to the boiler and space for tools and parts

• Reserve nearby parking or inform the engineer about permit restrictions

• Check likely part lead times for older boilers and agree whether work proceeds without parts on site

• Make the engineer aware of pets or fragile flooring and provide keys or access instructions if you cannot be present

• Ask in advance about any working‑at‑height or flue access that might require scaffolding or extra charges

• Confirm how waste and contaminated parts will be handled and whether you need to clear surrounding areas