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The average time it takes a tankless water heater to provide water for usage is immediate. The water in continuously hot for your usage. The average tankless water heater has a life expectancy for 20 years.
An average household is 4 people . They require a 40 US gallon heater. Add 10 gal for each additional person.
My elderly mum has moved to a small flat. What would be the best water heater for a single person with low usage?
It is not the square feet that determines the size water heater you need it is the demand. The more people who live in the home the higher the demand on the water heater to produce enough hot water. 1-3 people requires a 40 gallon water heater 4-6 people requires a 50 gallon water heater Of course you can make do with a 40 gallon water heater with a family of 4 or more but you will at times run out of hot water. Even if there are only 1 or 2 living in the home do not buy a 30 gallon water heater. You save very little money and may run out of hot water. But at least a 40 gallon.
no
It depends on usage.
One can find instructions for a 40 gallon water heater for installation from the 'American Water Heater' website where it can be viewed in PDF format. One can also find instructions on the 'About' website.
If the average person's water usage is 30 multiply it by the number of people in the family.
36000
1.6 gallon and 3 gallon.
about 100 lbs
The average water heater will have about 400 pounds of water in it.