A whole house electric tankless water heater can use more than 25,000 watts of electricity, compared to 5,000 watts of electricity with a conventional water heater. Gas tankless water heaters will ...

Uniform Energy Factor refers to a water heater's efficiency when run under simulated heavy use conditions for a 24-hour period. Electric Tankless is part of the Water Heaters test program at ...

Uniform Energy Factor refers to a water heater's efficiency when run under simulated heavy use conditions for a 24-hour period. Gas Tankless is part of the Water Heaters test program at Consumer ...