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User Answers:

1. According to federal government testing, “homes that use 41 gallons or less of hot water daily, tankless water heaters (also called on demand water heaters) can be from 24% to 34% more energy efficient than conventional storage tank water heaters.”
   
   To know the exact savings or expense of a tank or tankless water heating system, your plumber can calculate your needs, usage and other factors and give you an accurate estimate of the most cost effective path to hot water in your home.   [edit]
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