Articles

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Air Locks

Air locks are a real pain. We look at air locks in domestic hot and cold water pipes and in central heating systems. We look at how they happen and ways you can clear them...

Expansion Vessel Faults

Expansion vessels in boilers or central heating systems don't last forever. When they fail they cause big swings in pressure and the system loses water...

Radiator Balancing

There's an easy way to balance radiators. It works better than any other way we know and almost anyone can do it...

Radiator Valves

Thermostatic radiator valves and manual valves, wheelhead valves and lockshield valves. The differences between them, how they work and the faults they develop...

System Pressure

What should the central heating system pressure be? Why does it change and is that a problem? How to check and adjust the pressure...