How much should I expect to pay for a decent boiling water tap?

Prices vary but these are typical as of our last check. Basic hot-and-boiling models start from around £150 to £250 including a tank. Mid-range 3-in-1 taps, boiling plus mains hot and cold, typically run £200 to £350, and premium 4-in-1 taps that add a filtered cold water function commonly reach £500 to £900 or more, before installation.

Do I need an electrician as well as a plumber to fit one?

Yes. The tank needs a dedicated electrical spur wired by a qualified electrician alongside the plumbing work, so budget for both trades rather than treating it as a straightforward tap swap.

Is boiling water tap water actually as hot as a kettle?

Yes, most models deliver water at or very close to 100°C. Look for a genuine two-step action or child lock on the boiling function, particularly if there are young children in the house.

Will a boiling water tap fit under any kitchen sink?

Not always. The tank needs a certain amount of cabinet space, which varies between models, so it's worth measuring your cabinet and checking a specific tank's dimensions before ordering.

Is a filtered boiling water tap worth the extra over a basic one?

It depends how much you'd use the filtered cold function day to day. A standard filter cartridge improves taste and clarity but doesn't soften hard water, so it's worth being clear on what you're actually paying for before choosing a 3-in-1 or 4-in-1 model over a simpler one. Our full guide to boiling water and filtered taps goes through the running costs and filter maintenance in more detail.

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Top 5

Our Top 5 Boiling Water Taps

Instant boiling water taps have gone from a niche showroom feature to a genuine mainstream choice, saving both worktop space and kettle time

Thomas RichardEditor, The Tap Guide

Updated 14 August 2026 · 3 min read

Our picks

Our top pick1

Qettle 3-in-1 Instant Boiling Water Tap

£400.00 (correct as of August 2026)

A straightforward 3-in-1 boiling water tap from Qettle, one of the more established names in this category, without the added cost of a filtered cold function you might not use. Best suited to a one or two person household rather than a family making tea all day.

We like

Genuine 100°C boiling water rather than the 98°C some rivals manage
Two stage safety catch, a real child safety feature rather than a gimmick
Includes a basic limescale filter to protect the boiler tank
Compact 2 litre tank fits most standard under-sink cabinets

Worth checking

No filtered cold water function, mains cold only
2 litre tank needs around 10 minutes to recover once drained

Function: 3-in-1: boiling, mains hot, mains cold
Tank size: 2 litres
Finish: Chrome
Spout height: 228mm
Installation: Single hole
Safety: Two stage safety catch

Specifications above listed by Amazon and may change. Check the current listing before buying. If we've got something wrong, let us know and we'll fix it.

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Flode Tre 3-in-1 Boiling Water Tap

£209.99 (correct as of August 2026)

A 3-in-1 boiling water tap from Flode with a 360° swivel spout and a brushed brass finish that stands out from the usual chrome or steel options on this list. The hot and cold mixer lever handles everyday water, while a separate spring-loaded lever dispenses the boiling function.

We like

Genuine 98°C boiling water at the touch of a spring-loaded lever
Child-safe spring lock stops the boiling function being triggered accidentally
Brushed brass finish is a genuine alternative to the usual chrome
360° swivel spout makes filling pans and bowls easier

Worth checking

No filtered cold water function, mains cold only
A newer name to the UK market than the more established Qettle range

Function: 3-in-1: boiling, mains hot, mains cold
Finish: Brushed brass
Material: Brass
Spout design: 360° swivel
Installation: Single hole
Safety: Child-safe spring lock

Specifications above listed by Amazon and may change. Check the current listing before buying. If we've got something wrong, let us know and we'll fix it.

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SÄUBER Instant Boiling Water Mixer Tap

Currently out of stock

£245.83 (correct as of August 2026)

A chrome 3-in-1 boiling water tap from SÄUBER with a 2.4 litre tank, a digital display, and twin lever handles that keep the childproof boiling side clearly separate from everyday hot and cold. The angular styling and U-shaped spout give it a more modern look than some rivals on this list.

We like

2.4 litre tank with a digital display, enough for around 12 cups per tank
Childproof left-hand lever keeps the boiling function separate from everyday use
2 year manufacturer guarantee
Compact tank designed to fit under most standard sinks

Worth checking

No filtered cold water function, mains cold only
A newer name to the UK market than the more established Qettle range

Function: 3-in-1: boiling, mains hot, mains cold
Tank size: 2.4 litres
Finish: Chrome
Material: Brass
Spout design: U-shaped, swivel
Installation: Single hole
Warranty: 2 years

Specifications above listed by Amazon and may change. Check the current listing before buying. If we've got something wrong, let us know and we'll fix it.

Check availability on Amazon

Qettle 4-in-1 Instant Boiling Water Tap

£620.00 (correct as of August 2026)

Qettle's step up from the 3-in-1, aimed at anyone who'd actually use filtered drinking water day to day rather than ticking a box. Part of the same established range, so servicing and support should be just as straightforward.

We like

Filtered cold water in addition to true 100°C boiling
Gooseneck spout gives more clearance under the tap
Stainless steel body rather than plated chrome

Worth checking

A significant jump in price over the 3-in-1 for the filtered function alone
Needs a dedicated electrical spur, so budget for an electrician as well as a plumber

Function: 4-in-1: boiling, filtered cold, mains hot, mains cold
Finish: Chrome
Spout height: 228mm
Spout design: Gooseneck
Installation: Under sink

Specifications above listed by Amazon and may change. Check the current listing before buying. If we've got something wrong, let us know and we'll fix it.

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Qettle Original 4-in-1 Instant Boiling Water Tap (Gold)

£645.00 (correct as of August 2026)

The same 4-in-1 function as Qettle's standard model, dressed up for anyone after something less clinical looking than the usual chrome or steel boiling water tap. A finish-and-looks upgrade rather than a functional one.

We like

Distinctive gold finish, a genuine alternative to chrome or steel
High-arc pull-down gooseneck spout for extra clearance
Same true 100°C boiling and filtered cold as the standard 4-in-1

Worth checking

Costs more than the stainless steel 4-in-1 for a finish change alone
Gold finishes generally show water spots and fingerprints more readily than chrome

Function: 4-in-1: boiling, filtered cold, mains hot, mains cold
Finish: Gold
Spout design: Gooseneck, high-arc pull-down
Installation: Under sink

Specifications above listed by Amazon and may change. Check the current listing before buying. If we've got something wrong, let us know and we'll fix it.

View on Amazon

This page contains Amazon affiliate links. We may earn a small commission on qualifying purchases, at no extra cost to you. See our affiliate disclosure. A boiling water tap's tank needs its own WRAS approval, separate from the tap itself. Search the WRAS approved product database.

Frequently Asked Questions

: Prices vary but these are typical as of our last check. Basic hot-and-boiling models start from around £150 to £250 including a tank. Mid-range 3-in-1 taps, boiling plus mains hot and cold, typically run £200 to £350, and premium 4-in-1 taps that add a filtered cold water function commonly reach £500 to £900 or more, before installation.
: Yes. The tank needs a dedicated electrical spur wired by a qualified electrician alongside the plumbing work, so budget for both trades rather than treating it as a straightforward tap swap.
: Yes, most models deliver water at or very close to 100°C. Look for a genuine two-step action or child lock on the boiling function, particularly if there are young children in the house.
: Not always. The tank needs a certain amount of cabinet space, which varies between models, so it's worth measuring your cabinet and checking a specific tank's dimensions before ordering.
: It depends how much you'd use the filtered cold function day to day. A standard filter cartridge improves taste and clarity but doesn't soften hard water, so it's worth being clear on what you're actually paying for before choosing a 3-in-1 or 4-in-1 model over a simpler one. Our full guide to boiling water and filtered taps goes through the running costs and filter maintenance in more detail.