What is the maximum temperature limit set for shower valves according to the IRC?

The maximum temperature limit set for shower valves according to the International Residential Code (IRC) is 120 degrees Fahrenheit. This standard is in place primarily to protect users from scalding, especially vulnerable populations such as children and the elderly, who may have less ability to perceive temperature changes and react quickly.

Setting this limit helps ensure that water temperature remains within a safe range, minimizing the risk of burns while still providing an adequately warm experience for users. The IRC aims to balance comfort and safety, and 120 degrees Fahrenheit has been recognized as a suitable compromise that accommodates these considerations.