Green Plumbing

Category - Building Plumbing Inspection

Which of the following is not a factor in determining annual water savings attainable by switching to a high efficiency showerhead?
  1. Gallons per minute
  2. Maximum hot water temperature
  3. Number of persons in the household
  4. Shower minutes per person per day
Explanation
Answer: B - The maximum hot water temperature has no bearing on calculating water savings from switching to a high efficiency showerhead. The annual water savings is calculated by multiplying the number of persons, by the average shower minutes per person per day, by number of days in the year, by the gallons per minute. Only this last variable changes between the existing showerhead and the high efficiency showerhead under consideration.
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