“An average-sized, electrically heated outdoor hot tub can use 4500 kWh per year, or about half of an average home’s electric use for a year. For a typical Vermonter with a hot tub, that can be an additional $585 every year.” The electric heating element from the hot tub is what makes it use up so much energy. It might be a good idea to retrofit a heat exchanger so that your hot water boiler heating system for the home can provide cheaper heat to the hot tub.
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