I have a Gravity Fed Hot Water System, will this work the unit

No, Gravity fed hot water is not at sufficient pressure. The units operate between 1 and 3 bar of pressure. We recommend a Twin Impeller Pump to be used so that the hot and cold water are sent to the system at the same pressure. To achive the best results from your shower we would suggest you get a pump capable of between 2-3.

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