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Decision Guidance for Heat Pump Water Heaters - Problem Set - Apply

Question

Problem Set 3.1:

  1. Which of the following is true about condensate from HPWHs?
    1. It is highly acidic.
    2. It forms from the moisture in the air.
    3. Only a certified contractor can handle it.
    4. It will naturally evaporate so you do not need to worry about drainage.
  2. True or False: HPWH condensate drainage blockage is more likely to occur in below freezing temperatures.

Problem Set 3.2:

  1. What is the first hour rating of a HPWH?
  2. Calculate the first hour rating of a household that has the following peak hour demand: 2 showers, 2 shaves, 1 food prep, and 1 top-loader clothes washing.

Problem Set 3.3:

  1. What can cause excessive, wasteful energy use when using a recirculation pump with a heat pump water heater?
  2. How can a heat pump water heater cause a combustion appliance to backdraft when operating in the same airspace?