Hot Water: Why Plumbing Technologies and System Designs Matter
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This online-only article is a supplement to the March/April 2015
print edition of Home Energy Magazine.
January 31, 2015
The average home in the United States makes at least 2,000 annual demands for hot water. And that’s very conservative. A more-likely demand value exceeds 4,000. Couple those demands with an average wait time for hot water at the master bath showerhead in single-family homes that is, according to an informal web poll performed by the National Resources Defense Council, more than 70 seconds. That’s a lot of water down the drain waiting for hot water! Even with a highly efficient showerhead, that’s 2.3 gallons—for just one hot-water demand event!
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