Buyer guide
3-in-1 boiling water taps: 4 models compared (2026)
A 3-in-1 boiling water tap gives boiling, hot and cold water from one spout, in place of your existing mixer. It is the simplest version of the idea: one tank under the sink, one tap on the worktop. We list 4 current 3-in-1 taps from 3 brands, with recommended retail prices from £299 to £2,071.
Brands do not count the same way. Zip HydroTap G5 Celsius Arc (3-in-1) lists filtered water as well, so it is sold as a 3-in-1 while doing more than the plain boiling, hot and cold set. Read the function list on the model page rather than the number.
Tanks hold 2.4 to 4 litres and the maximum temperature runs from 98 to 100°C. A bigger tank gives more cups before the reheat, and a lower maximum temperature means near-boiling rather than boiling water. The Hanstrom Ume 3-in-1 is the cheapest at £299; the Zip HydroTap G5 Celsius Arc (3-in-1) is the most expensive at £2,071.
Model by model: the Hanstrom Ume 3-in-1 has £299 RRP, a 2.4 litre tank, up to 98°C, a 1 year warranty; the Franke Maris Water Hub 3-in-1 Mechanical has £989 RRP, a 4 litre tank, up to 100°C, a 2 year warranty; the Franke Maris Water Hub 3-in-1 Electronic has £1,132 RRP, a 4 litre tank, up to 100°C, a 2 year warranty; the Zip HydroTap G5 Celsius Arc (3-in-1) has £2,071 RRP, a 3 litre tank, up to 98°C, a 3 year warranty. The table below puts the same numbers side by side with a button to the retailers we link to.
The Franke Maris Water Hub 3-in-1 Electronic is the one 3-in-1 in our library that Franke lets you upgrade to a 4-in-1 later with a filtered water kit. If you want filtered water from day one, a 4-in-1 saves the later purchase. If you only drink boiling water and tap water, a 3-in-1 avoids paying for a function you will not use, and it avoids the cartridge as a running cost.
Fitting works the same way as for any tap of this kind: a tank in the sink cabinet, a cold water feed and a power socket. The running cost calculator turns a tap's idle wattage and your tariff into a yearly figure, and the installation cost estimator gives a rough range before you ask an installer for quotes.
All 4 current 3-in-1 taps side by side
Specifications and RRPs come from the manufacturers. Retailer prices change, so the buttons show the offers we have a link for.
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| Model | RRP | Tank | Max temp | Filtered | Warranty | Where to buy |
|---|---|---|---|---|---|---|
| HanstromHanstrom Ume 3-in-1 | £299 | 2.4 L | 98°C | No | 1 yr |
|
| FrankeFranke Maris Water Hub 3-in-1 Mechanical | £989 | 4 L | 100°C | No | 2 yr | Model page |
| FrankeFranke Maris Water Hub 3-in-1 Electronic | £1,132 | 4 L | 100°C | No | 2 yr | Model page |
| Zip WaterZip HydroTap G5 Celsius Arc (3-in-1) | £2,071 | 3 L | 98°C | Yes | 3 yr | Model page |
Questions people ask
- What is a 3-in-1 boiling water tap?
- A tap that gives boiling, hot and cold water from one spout, in place of your existing mixer. Some brands also count filtered water in a 3-in-1, so read the function list on the model page.
- How much does a 3-in-1 boiling water tap cost?
- Recommended retail prices in our library run from £299 (Hanstrom Ume 3-in-1) to £2,071, across 4 current models.
- Can I add filtered water to a 3-in-1 tap later?
- Only on some models. In our library Franke lists a kit that upgrades the Maris Water Hub 3-in-1 Electronic to a 4-in-1. For other taps, check with the manufacturer before you rely on it.