Tag Archives: central heating

Combi boiler

A combination boiler, or combi boiler as it is typically known, is a boiler which provides the heat for both the radiators and the domestic hot water outlets in the home. Combi boilers are the most common type of boiler in the … Continue reading

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Broken coil

A broken coil refers to a fault in a hot water cylinder in which the coil inside the cylinder is perforated, allowing water from the central heating circuit inside the coil to mix with water in the hot water cylinder. Overview … Continue reading

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Feed and expansion tank

The feed and expansion tank, or feed and expansion cistern as it is technically known, is a cistern which supplies the central heating circuit with water and accommodates the expansion of the water when it is heated by the boiler. … Continue reading

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Pumping over

Pumping over refers to a symptom of an improperly configured central heating system in which water is discharged into the feed and expansion cistern via the expansion pipe while the pump is running. The cause is usually either: The pump … Continue reading

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