The kettle has had its day. You fill it, wait for it to boil, and by the time it clicks off, you have already forgotten why you needed it. It is one of those kitchen rituals so ingrained that it rarely gets questioned. A 3-in-1 boiling water tap makes the habit feel unnecessary.
One tap, three functions:
- Instant boiling water, filtered and ready at the turn of a handle.
- Regular hot and cold, working exactly like a standard mixer tap.
- A compact under-counter tank that sits beneath the sink, out of sight.
If you are mid-renovation or simply tired of the worktop clutter, our 3-in-1 taps range covers Chrome, Matt Black, Brushed Brass, and Brushed Nickel across both the Fohen and Hanstrom collections.
This guide explains how the system works from tank to spout, what the safety features do, and how to decide whether the format is right for your home.
What Is a 3-in-1 Boiling Water Tap?
A 3-in-1 boiling water tap is a single-spout kitchen tap that delivers instant boiling water, hot water, and cold water from one unit, replacing both a standard mixer tap and a kettle. Which? describes the category as one where convenience and running costs are the two main considerations for buyers, and both are worth understanding before you commit [1].
The boiling function draws from a compact under-counter tank that heats and holds filtered water to 98°C. The Fantale Pro collections offer the 3-in-1 format across all six finishes, whether your kitchen runs contemporary or more traditional lines.
If you are still deciding whether a boiling water tap is worth the investment, our guide to Are Boiling Water Taps Worth It? covers the cost and convenience case in full.
What's Under the Worktop?
The under-counter boiler tank is what makes a 3-in-1 boiling water tap work. It is a compact, insulated unit that sits beneath the sink, connects to your cold water supply, heats the water to near-boiling point, and stores it, ready for use.
When you activate the boiling function, water travels from the tank up through an insulated spout and out at the set temperature. The tank houses the filtration system, which removes chlorine, limescale, and other impurities before heating.
Each of our taps ships with the tank, filtration system, and all pipes and fittings included. Replacement filters and accessories are available directly from Fohen when the time comes. The tap fits through the standard worktop hole, connects to existing pipework, and requires no structural changes for most UK kitchens. Installation follows the same process as a standard tap replacement.
Is a 3-in-1 Tap Safe to Use?
Yes, a 3-in-1 boiling water tap is safe. They are designed with multiple safety mechanisms to prevent accidental contact with near-boiling water. Used correctly, it presents no greater risk than a standard tap.
The National Health Service (NHS) notes that scalds from hot water are among the most common household burns, particularly for young children [2]. Our taps address this directly.
Every tap in our range includes three layers of protection:
- The insulated spout stays cool to the touch on the outside, even while dispensing filtered boiling water at up to 98°C.
- The spring-loaded safety catch on the boiling handle requires a deliberate push-and-turn action to activate, making accidental use effectively impossible.
- The child-safe lever adds an additional mechanical barrier, so the boiling function cannot be triggered without the correct two-step motion.
For more on treating scalds if they occur, the NHS guidance on burns and scalds clearly covers first aid. If you have a specific question about your water type or setup, our FAQs page covers the most common ones.
How Energy Efficient Are 3-in-1 Taps?
The energy argument for a boiling water tap comes down to how each system handles standby heat. A kettle uses, on average, 2,200 watts per boil, and most households overfill it, heating more water than they need. A boiling water tap's under-counter tank holds water at a constant temperature, using only a fraction of the power, because the insulated tank retains heat rather than generating it from scratch each time.
Ideal Home reports that a boiling water tap can use as little as 10 watts per day in standby, compared to the average kettle's 2,200-watt draw per boil. Across a household that boils the kettle four or five times a day, that gap adds up across the year [3]. Our Digital 100° taps go further, with a precise digital temperature display so you heat water only to the temperature you actually need.
We cover this topic in more depth in our guide, Are Hot Water Taps Energy Efficient? including a comparison of standby costs across tap formats.
Is a 3-in-1 Tap Right for Your Kitchen?
A 3-in-1 boiling water tap suits kitchens where worktop space is tight, the kettle gets used heavily, and filtered water is already part of the daily routine. Which? includes boiling water taps in its roundup of time-saving kitchen upgrades, which is worth reading if you are still weighing up formats [4].
It is a good fit if any of the following apply:
- You want to clear the worktop of a kettle, filter jug, or separate hot water dispenser.
- You make multiple hot drinks a day and find waiting for the kettle a genuine inconvenience.
- You are fitting or refitting a kitchen and want a tap that works as a design feature, not just a utility.
If filtered cold water matters as much as boiling, our 4-in-1 taps range adds a dedicated filtered cold function to the same unit. The Hanstrom Lunen collection is available in both formats in the same finishes, so you can compare them directly.
Make Your Worktop One Tap Lighter
Most kettle replacements happen during a kitchen renovation, but plenty of people fit a 3-in-1 boiling water tap as a standalone upgrade, replacing an existing mixer tap without touching anything else. The under-counter tank fits in standard under-sink cupboards; installation is a standard plumber's job, and the result is a worktop with one fewer appliance.
Fohen supplies every tap with the filtration system, under-counter boiler tank, and all fittings included. Free 48-hour delivery to mainland UK addresses, a two-year warranty, and 30-day returns come with every order.
Take a look at the full range, pick your finish, and order direct or get in touch today.
External Sources
[1] Which?, Brianna Watson, Quooker, Franke, Qettle and Other Boiling Water Taps Compared (2026): https://www.which.co.uk/reviews/hot-water-taps/article/quookers-and-boiling-water-taps-are-they-worth-it-a6qXz2A1zq4E
[2] National Health Service (NHS), Burns and Scalds: https://www.nhs.uk/conditions/burns-and-scalds/
[3] Ideal Home, Rachel Ogden, How Much Does It Cost to Boil a Kettle for a Cup of Tea — and How Can You Save? (2024): https://www.idealhome.co.uk/property-advice/how-much-does-it-cost-to-boil-a-kettle-299761
[4] Which?, Tom Morgan, 7 of the Best Time-Saving Gadgets for Busy People (2024): https://www.which.co.uk/news/article/best-time-saving-gadgets-for-busy-people-asewH0p5uEo7