To what maximum temperature should a water-temperature-limiting device restrict hot water applied to a bathtub or whirlpool?

• A. 100 F
• B. 110 F
• C. 120 F
• D. 130 F

Answer: (C)

The appropriate maximum temperature for a water-temperature-limiting device applied to a bathtub or whirlpool is established at 120°F. This temperature is specified because it is considered a safe threshold that minimizes the risk of scalding while still providing adequate hot water for bathing. Temperatures above this level significantly increase the risk of burns, particularly for vulnerable populations such as young children and the elderly.

Setting the limiting device at 120°F provides a balance between comfort and safety, complying with plumbing codes that aim to prevent scalding injuries. By adhering to this standard, homeowners and plumbing professionals can ensure safety measures are in place while enabling users to enjoy hot water without undue risk.