No Heating
Rapid diagnosis of failed diverter valves, broken pumps, and faulty PCB boards. We carry common parts to fix most boilers on the first visit.
Fix My Heating
Gas Safe registered engineers serving Caerphilly and the surrounding valleys. We diagnose and fix boiler faults fast — no heating, no hot water, fault codes, and pressure issues.
Reliable, professional service across Caerphilly and the surrounding valleys. Gas Safe registered engineers and experienced tradespeople you can trust.
Rapid diagnosis of failed diverter valves, broken pumps, and faulty PCB boards. We carry common parts to fix most boilers on the first visit.
Fix My HeatingHot water issues caused by thermistors, heat exchangers, or diverter valves. Fast fault-finding and same-day repair where possible.
Fix Hot WaterWe interpret and resolve all common boiler fault codes for Worcester Bosch, Vaillant, Ideal, Baxi, and more.
Clear Fault CodeLow pressure causing your boiler to lock out? We identify leaks and repressurise the system safely.
Fix PressurePilot light or ignition faults repaired by our Gas Safe engineers. Never attempt to relight yourself if you suspect a gas issue.
Call NowNo call-out fees. We diagnose the issue and give you a fixed price before any repair work begins. No surprises.
Get a QuoteCaerphilly sits higher and more exposed than Cardiff, and both facts show up in the boiler repairs we attend. The exposure means frozen condensate pipes are a more frequent winter call here than down in the city — the boiler locks out with a fault code, the homeowner assumes the worst, and the actual problem is a 22mm plastic pipe on a north-facing wall with no lagging on it.
Height matters in a different way. Mains water pressure and flow fall off with elevation, and properties on the higher ground around the town can be working with noticeably less than a combi boiler was specified to have. The symptom is not a boiler fault at all: it is poor hot water flow, or a shower that drops to a trickle when another tap opens. Replacing the boiler does not fix it. Measuring the incoming flow rate first tells you whether a combi was ever the right appliance for that property.
On sealed systems we also see a lot of expansion vessel failures, which present as pressure that keeps dropping and needing topping up. People often assume they have a leak somewhere in the house and start looking for damp. A failed vessel or a passing pressure relief valve produces exactly the same symptom without a drop of water appearing indoors, and it is a considerably cheaper repair than chasing a leak that is not there.
See why homeowners across Caerphilly and the surrounding valleys choose Cardiff & Caerphilly Plumbers.
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Our engineers are stationed locally for rapid response across Caerphilly and the surrounding valleys.
We cover Cardiff, Caerphilly, Barry, Newport, Penarth and Pontypridd. Choose your area for local detail.