Practice Quiz

Green Plumbing - Question List

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36. Each of the following is a potential disadvantage of a tankless water heater, except:
  1. Prone to leakage under certain conditions
  2. May increase hot water usage
  3. May increase energy usage
  4. May take a little longer to start producing hot water
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37. Above what water pressure does a home require installation of pressure reducing valves (PRVs)?
  1. 50 PSI
  2. 65 PSI
  3. 80 PSI
  4. 95 PSI
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38. To facilitate residential water system improvement recommendations to customers, which extended area of knowledge offers sizeable market expansion potential for plumbers?
  1. Auditing and managing irrigation systems
  2. Specializing in showerhead selection
  3. Focusing on dishwasher installation
  4. None of the above
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39. In advising on suitable lawn grasses for a customer in New Mexico, which would not be a suitable recommendation?
  1. Bermuda grass
  2. Perennial ryegrass
  3. St. Augustine grass
  4. Zoysia grass
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40. Which of the following is not a major efficiency-related recommendation that a plumber may make to a customer?
  1. Install a graywater diversion system
  2. Install a rainwater storage system
  3. Replace applicable appliances with solar hot water appliances
  4. None of the above - all are major recommendations
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