This can be prevented by setting the water heater to a temperature where the bacteria Legionella cannot thrive. The Occupational Safety & Health Administration (OSHA) recommends water heaters be set ...

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

However, there are some factors that might necessitate more frequent draining: If you have an electric water heater, turn off ...