Tankless Water Heater

Definition: A water heating system that heats water directly without the use of a storage tank, also known as an on-demand water heater.

Relevance to energy: Tankless water heaters can be more energy-efficient than traditional storage water heaters because they eliminate standby energy losses associated with storing hot water.

Benefits:

  • Can be 24-34% more energy-efficient for homes that use 41 gallons or less of hot water daily
  • Provides a continuous supply of hot water
  • Generally have a longer lifespan than traditional water heaters

Drawbacks:

  • Higher initial cost than traditional water heaters
  • May require upgrades to gas line or electrical system
  • Can struggle to supply hot water to multiple outlets simultaneously

Statistics: According to the U.S. Department of Energy, tankless water heaters can save a typical family about $100 or more per year on water heating costs compared to traditional storage tank water heaters.

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