Is a boiling water tap energy-efficient? Here's how it compares to your kettle

""Yes - in many households, a boiling water tap can be more energy efficient than repeatedly boiling a kettle,""

""However, efficiency also depends on the quality of insulation and the design of the heating system you pair it with. For example, we're seeing better performance when boiling taps are connected to modern, low-waste hot water systems - such as shared-cylinder solutions or ultra-efficient thermal stores like the OH4 platform - because these reduce standing losses elsewhere in the home. The more efficient your core hot water system is, the better the overall result.""

"In well-designed tap systems, a small amount of water is kept hot inside an insulated tank, so the system only tops up lost heat, rather than reheating from scratch each time."

Boiling water taps can reduce energy use compared with repeatedly boiling a kettle by keeping a small volume of water hot in an insulated tank and only topping up lost heat. They are particularly efficient for light, frequent tasks such as making tea, rinsing utensils, or preparing food. Overall efficiency depends on insulation quality, the design and age of the home's hot water system, and how the tap is used. Connecting boiling taps to modern, low-waste hot water systems like shared-cylinder solutions or ultra-efficient thermal stores reduces standing losses and improves performance.

Read at Homebuilding