The temperature setting for water heaters is typically recommended to be no higher than what temperature?

The recommended temperature setting for water heaters is often capped at 120°F for several important reasons. Setting the water heater at this temperature significantly reduces the risk of scalding injuries, especially for children and the elderly, who are more susceptible to severe burns. Water at temperatures above 120°F can cause third-degree burns in just a few seconds, whereas water at 120°F generally takes longer to cause injury, allowing individuals to react and avoid harm.

Additionally, maintaining a water heater at 120°F is seen as a safe balance between preventing the growth of harmful bacteria, such as Legionella, and ensuring energy efficiency. Higher temperatures can increase energy consumption and lead to unnecessary costs, whereas an optimal setting helps ensure that water is adequately heated for typical household needs without excessive energy use.

In contrast, higher temperature settings like 140°F, 160°F, or 180°F may be used in certain situations, such as dishwashing or specific industrial applications, but they come with increased risks of scalding and higher energy bills, making 120°F the generally preferred maximum for residential use.