System boilers have more components than a combi including a hot water cylinder, expansion vessel, and sealed system which means more things that can occasionally go wrong. We repair system boilers across Cardiff and understand how all the components interact. Whether it’s a cylinder thermostat, a faulty pump, a waterlogged expansion vessel, or a boiler fault code, we’ll find the cause and fix it. Call +44 7812 510121.
When You Need System Boiler Repair
Signs of a system boiler problem include no heating while hot water is fine (or vice versa), the pressure gauge dropping repeatedly, the expansion vessel needing frequent re-pressurising, the pump running constantly, or a fault code on the boiler display. Cylinder thermostat failures are also common in older Cardiff properties.
Our System Boiler Repair Process
We assess the whole system, not just the boiler. We check the cylinder, pump, expansion vessel, pressure relief valve, and all controls as well as the boiler itself. Once we’ve identified the fault, we give you a clear quote and complete the repair. We test the full system before we leave.
System Boiler Repair Cost in Cardiff
Costs depend on the component that needs repair or replacement. We quote before we start and stick to the quoted price. No open-ended billing.
Why Choose Us
System boiler repairs require understanding the full system, not just the boiler itself. We’ve repaired systems in all types of Cardiff properties and carry the parts that come up most often on system boiler jobs.