E3A Home Energy: Water Heater

Editor’s note
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CoverDeveloped by Montana State University Extension and the University of Wyoming
Adapted with permission

This guide is one in the Exploring Energy Efficiency and Alternatives (E3A): Energy Management for Home series. This one covers water heater maintenance and provides energy-saving options and tips on buying a new water heater.


  • Adjust the thermostat
  • Choosing a new water heater
  • Energy-saving water heater options
  • Flush the water tank
  • Gas-condensing water heaters
  • Heat pump water heaters
  • High-efficiency gas storage water heaters
  • Install heat traps
  • Insulate hot-water pipes
  • Insulate the water heater tank
  • Lighting a gas water heater pilot light
  • Seismic bracing
  • Solar water heating system
  • Tankless (on-demand) water heaters
  • Water heaters


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