When pressure becomes too low, the boiler cannot circulate hot water — causing cold radiators, intermittent heating, or complete shutdown.
What causes pressure loss
- Small leaks at pipe joints, radiator valves, or concealed pipes
- A faulty expansion vessel that has discharged
- A pressure relief valve that releases when pressure is unstable
Why professional diagnosis matters
Repressurising without fixing the leak only masks the problem. Our Glasgow engineers use specialist tools to find the source and repair it safely.