Do Boiling Water Taps Use Electricity?
Yes, boiling water taps use electricity. The system includes a small heated tank installed under the sink that stores water at near-boiling temperature, usually between 98°C and 100°C. This tank keeps water ready for instant use whenever the boiling water function is activated.
Although the system remains powered throughout the day, modern boiling water taps are designed to be highly energy efficient. The tank is heavily insulated, meaning it only uses small amounts of electricity to maintain the water temperature.
How A Boiling Water Tap Uses Electricity
Unlike a kettle, which heats water from cold every time you use it, a boiling water tap works by storing a small volume of heated water in an insulated tank beneath the sink.
The tank heats the water once and then maintains the temperature. When boiling water is dispensed, the system simply reheats the small amount of water that has been used.
This process means the tap does not constantly boil water all day, but instead maintains heat efficiently.
Typical Power Usage
Most boiling water tap systems use around 1.3kW to 2.0kW of power when heating water. However, because the tank only reheats occasionally, the total energy usage is relatively low.
In many cases, the annual electricity cost for a boiling water tap is estimated to be between £20 and £40 per year, depending on usage and electricity prices.
How This Compares To A Kettle
A kettle usually uses between 2kW and 3kW of power when boiling water. Each time you boil the kettle, it heats the entire volume of water from cold, which can consume a significant amount of energy if done frequently.
Boiling water taps, on the other hand, keep a smaller amount of water hot and ready. In households that frequently boil the kettle throughout the day, the energy usage between the two options may actually be quite similar.
Energy Efficiency Features
Modern boiling water taps include several features designed to keep electricity usage as low as possible.
- Insulated tanks that minimise heat loss
- Compact water volumes that reduce heating requirements
- Energy-saving standby modes on some systems
- Rapid reheating that only heats water when needed
These design improvements help ensure the tap remains efficient even though it stays powered throughout the day.
Does The Tap Use Electricity All Day?
The heating system remains connected to power all the time, but it does not continuously heat water. Instead, it switches on briefly when the tank temperature drops.
Because the tank is insulated, this happens relatively infrequently, which keeps energy consumption low.
What Affects Electricity Usage?
The amount of electricity used by a boiling water tap can vary depending on several factors.
- Tank size – larger tanks require slightly more energy
- Insulation quality – better insulation reduces heat loss
- Frequency of use – more boiling water means more reheating
- Room temperature under the sink
In most kitchens, these differences are relatively small, and running costs remain modest.
Is The Electricity Use Worth It?
For many homeowners, the small amount of electricity used by a boiling water tap is considered worthwhile because of the convenience it provides.
Having boiling water instantly available can save time, reduce the need for kettles on the worktop and make everyday cooking and drink preparation much easier.
Final Thoughts
Yes, boiling water taps do use electricity, but the amount is usually quite low. Thanks to insulated tanks and efficient heating systems, the overall energy cost is modest for most households.
If you value convenience and a clutter-free kitchen, the electricity used by a boiling water tap is often a small price to pay for instant boiling water whenever you need it.
