an average, a single person tends to make use of around 15 gallons to 30 gallons of water in a single day when they are doing the dishes, washing clothes, bathing and also cleaning the house. with this figure in mind, if there is one person in a single household, then you are going to need a total of 30 gallons of hot water to be produced by your water heater. this is an estimated amount of the time this person is going to wake up to the time this particular person is going to go to bed.
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