Q. WHAT TEMPERATURE SHOULD HOT WATER BE STORED AT?

A. Defra’s guidance G18.2 recommends that hot water should be stored at a temperature of not less than 60°C and distributed at a temperature of not less than 55°C. This water distribution temperature may not be achievable where hot water is provided by instantaneous or combination boilers.

Where practicable hot water should reach your tap within 30 seconds and be at least 50°C after fully opening it. This criteria may not be achievable where hot water is provided by instantaneous or combination boilers.

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