Can anybody tell me what a Thermostatic Power Shower is does it run off the main hot water tank or is it like a normal electric shower?please help.thanks.
This type of unit uses a normal gravity feed hold and cold water supply, which are mixed to give required output temperature. However they have a small inbuilt pump which delivers the water at a much higher pressure / flow rate.
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Try fixfault.com to fix baths and showers.