4 in 1 Boiling Water Taps

A 4-in-1 tap provides everything a standard kitchen mixer does (standard hot and cold mains water) plus instant 98°C boiling water and cold-filtered drinking water. Unlike a 3-in-1 tap, the 4-in-1 includes an advanced carbon filtration system specifically for your cold drinking water, removing chlorine, sediment, and impurities. This effectively replaces the need for filter jugs or bottled water, saving both money and plastic waste.

A 4-in-1 system uses the same 35mm tap hole as a standard mixer, but you should ensure your sink base cabinet (usually 600mm) has enough "real estate" for the boiler tank and the larger filtration manifold. Most 4-in-1 tanks are roughly the size of a large cereal box. You will also need a standard 13-amp power socket under the sink. We recommend checking the specific dimensions of the boiler tank on the product page before purchasing.

Most systems dispense water at 98°C to 99°C. This is intentional; 98°C is considered the "perfect" temperature for tea and coffee, as 100°C boiling water can actually "scald" the tea leaves or coffee grounds, resulting in a bitter taste. The slight drop from the tank to the spout also prevents "spitting" and ensures a smooth, steady flow.

To protect the boiler tank from limescale build-up and ensure your water tastes fresh, filters typically need replacing every 6 to 12 months, depending on your water usage and local water hardness. Most systems feature a "filter change" indicator light to remind you. Regular filter changes are essential to maintain your manufacturer's warranty. You can find a full range of replacement filters on our website.

Most 3-in-1 or 4-in-1 systems are designed for standard UK plumbing. You will need a standard 35mm tap hole, a 13amp power socket under the sink for the boiler tank, and a cold water connection. While a competent DIYer can often manage the installation, we recommend a qualified plumber to ensure the pressure-reducing valves and filters are calibrated correctly for your local water hardness.

Surprisingly, no. While the initial cost is higher, a boiling water tap is often more energy-efficient for busy households. It maintains water at a set temperature in a highly insulated tank, costing approximately 3p–5p per day on standby (price dependant on your energy provider). Because you only dispense the exact amount of water you need, you avoid the energy waste associated with overfilling and re-boiling a kettle multiple times a day.

Yes, our range of Boiling Water Taps includes integrated safety features such as cool-touch spouts and child-safe "push-and-turn" handles. These taps provide standard hot and cold water alongside instant 98°C filtered water, eliminating the need for a kettle and saving both time and worktop space.