Practice Quiz

Green Plumbing

Category - Caring for Our Planet

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What is one distinction in measurement units between the ENERGY STAR ratings for gas and electric water heaters?
  1. Input rate
  2. Amount of energy consumed
  3. Energy source potential
  4. All of the above
Explanation
Answer: D - All of these types of measurement units differ between gas water heaters and electric water heaters on ENERGY STAR ratings. Gas ratings use kBtu/hr for input rate; electric ratings use kW. Gas ratings use therms/year for amount of energy consumed; electric ratings use kW/year. Gas ratings show no unit for energy source potential; electric ratings show the voltage for the outlet or circuit.
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