The 230V 3KW Heater is designed to efficiently maintain the water temperature of a standard bathtub at the preset level of 40℃ (104℉). However, if starting with cold water, the Heater will increase the temperature at a rate of 6 to 8℃ (11 to 14℉) per hour, depending on the initial water temperature, the room temperature, and the size of the bathtub.
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