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If your system has a 'dry cycle' a dry cycle is a feature

If your system has a 'dry cycle' a dry cycle is a feature found on older boilers which means that if the heating is on, but your home is already at the temperature set by the thermostat, it won't switch off, but instead will send the heat to an 'overflow radiator' (usually in the bathroom) this can be a real energy waster,.

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