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This guide answers some of the frequently asked questions that we’ve gotten about our tankless heat pump water heater. Some of the topics covered include:

  • An inside look at the iE1 along with installation pictures with piping connections labeled
  • Hot water usage patterns and flow profiles from an existing iE1 installation
  • An outlook at our sizing approach using model cities based on ambient temperature and groundwater temperature

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Are You a Hot Water User?

  • Discover 9 ways you can save as much as 22% on your water heating bills.


  • Learn tips backed by the Department of Energy that promise up to $400 in savings without lowering your hot water usage.


  • Bust common myths that not only make your water heating more cost-effective, but also environmentally sustainable.