Frequently Asked Questions

If you’re considering a boiling water tap, you probably have a few questions before making the switch. From how they work and whether they are safe, to running costs and installation requirements, there are several things homeowners often want to understand first.

This FAQ page answers some of the most common questions about boiling water taps to help you decide whether they are the right choice for your kitchen. If you’re new to instant hot water taps or simply want to learn more about how they work, the answers below should help explain the key features and considerations.

Frequently Asked Questions

What is a boiling water tap?

A boiling water tap is a kitchen tap that delivers near-boiling water instantly, alongside standard hot and cold water. It connects to a small heated tank installed under the sink that stores water ready for immediate use.

How does a boiling water tap work?

Boiling water taps use an insulated tank located under the sink to heat water to around 98–100°C. When the boiling water function is activated, the tap dispenses this heated water instantly.

Do boiling water taps replace kettles?

Yes, many households remove their kettle after installing a boiling water tap. Because the tap provides boiling water instantly, it can perform the same job without needing a separate appliance on the worktop.

Are boiling water taps safe to use?

Yes. Modern boiling water taps include safety features such as child-safe activation controls, insulated spouts and controlled water flow to reduce the risk of splashing or accidental use.

Do boiling water taps use a lot of electricity?

No. Most systems are designed to be energy efficient. The insulated tank maintains the water temperature using relatively little electricity, typically costing around £20–£40 per year to run.

Do boiling water taps require a tank?

Yes. Most systems include a compact tank installed under the sink. This tank heats and stores the water so the tap can deliver boiling water instantly when needed.

How long do boiling water taps last?

A high-quality boiling water tap can last many years. With regular maintenance and filter replacements where required, most systems provide reliable long-term performance.

Do boiling water taps filter water?

Many boiling water tap systems include a water filter that improves taste and reduces impurities or limescale before the water is heated and dispensed.

Can boiling water taps provide other types of water?

Some advanced systems can provide additional water types such as filtered cold water, chilled water or even sparkling water, depending on the model and system configuration.

Do boiling water taps need professional installation?

Installation is usually recommended by a professional plumber because the system involves installing the tap, connecting the under-sink tank and linking it to both the water supply and an electrical outlet.