Common Boiler Problems & Quick Fixes

Boiler firing but no heat? Or completely dead? Here's why — and how fast we can fix it.

Heating works but taps run cold? Or no hot water at all? Most causes are a quick fix.

Pressure dropping below 1 bar? Boiler locking out? Here's the cause and the fix.

Water around or under your boiler? Don't ignore it — here's what's likely leaking.

One cold radiator, top cold and bottom hot, or whole system half-heating? Here's why.

Banging, kettling, whistling or gurgling from your boiler? Here's what's causing it and how we fix it.

Fires up briefly then cuts out? Keeps showing a fault code? We diagnose why and fix it same-day.

Boiler showing a fault code in cold weather? The white plastic pipe outside may be frozen. Here's the quick fix.

Pilot won't stay lit or keeps dropping out? It's usually the thermocouple, gas valve or a draught — all fixable in one visit.