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Combi boiler systems do not

Combi boiler systems do not tend to suffer from air locks or low pressure, as the hot water is taken directly from the water mains. If your gas boiler is over years old, it may only be % efficient our package includes %+ efficient gas boiler and upgraded controls leading to lower heating bills. I'll have to think that one over for.

Added: 2021-02-13 | Comments: 0 | Category: one