6.3.2 Identify the various types of domestic hot water heating equipment and range of efficiencies

  • Conventional tank Energy Factor is about .51
  • Induced draft EF .65-.83
  • Condensing tank EF .94-.98
  • Tankless EF .80-.83
  • Condensing tankless EF .91-.99
  • Electric heat pump EF 2.3-3.39
  • Electric tank standby loss: 25-102
  • Heat Pump COP 2.5+
  • Solar: up to 50% of yearly needs
  • DWHR: up to 40% heat recovery

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