Quooker invented the category and still sets the price of it. Qettle is the British tap that asks why a boiling water tap should cost more than a dishwasher. Both hold water at 100°C under your sink all day, which is why both live or die by how hard your water is. This is the two-brand comparison, using only what each maker says on its own site.
According to TapWater.uk's reading of both makers' sites in 2026, Qettle and Quooker both store water at 100°C; Qettle's taps start at £480 and Quooker's at £1,050 before installation. Qettle fits a limescale-protecting cartridge it asks you to change twice a year. Quooker's in-tank HiTAC filter is, in Quooker's words, not a limescale filter. In roughly 60% of England the water is hard enough for that difference to matter.
We have no commercial relationship with Qettle or Quooker. Links to their sites are plain links with no tracking and earn us nothing. The one affiliate link on this page is the InSinkErator dispenser near the end, and it is marked. Full disclosure
At a glance
Facts are what each maker publishes; the last column is our reading of them. Prices are before installation and move often.
Qettle and Quooker compared
Qettle
Quooker
Edge
Boiling water temperature
100°C, stored in the boiler
100°C, stored under slight pressure
Tie
Tank options
2, 4 or 7 litres
PRO3 3 litres; COMBI and COMBI+ 7 litres of boiling plus hot tap water
Quooker, if you want the tank to feed your hot tap too
Heat-up from cold
15 min (2 L), 17.5 min (4 L), 20 min (7 L)
10 min (PRO3), 20 min (COMBI)
Tie
Filter
Cartridge on the boiler feed, formulated to protect the element from limescale; change twice a year; £35.50 to £36.50
HiTAC carbon filter in the tank for taste; Quooker says it “isn’t a limescale filter”
Qettle in hard water
Price from
£480 (Mini 2-in-1); £545 (Original 4-in-1)
£1,050 (Nordic single tap); £1,250 (Flex, Fusion)
Qettle, by roughly half
Warranty
2 years on boiler, filter system and working parts; 1 year on the chrome Original finish, lifetime on the stainless Signature finish
2 years on all products
Tie
Installation
Designed for “a happy DIY-er” or a professional; 13 amp socket, no extension lead; 1.5 to 5 bar
“Your plumber, builder, or even you”, or Quooker’s own engineers; 13 amp socket, 2 bar minimum
Tie
Chilled and sparkling
Separate chiller unit on some models; check the maker
Price, most obviously: the Original 4-in-1 at £545 is a true 100°C system with filtered cold water, for less than half the cheapest Quooker. It also wins on hard water housekeeping. The cartridge on the boiler feed is there to protect the heating element from scale, Qettle tells you plainly to change it twice a year and deep-clean the boiler once a year, and the replacement costs about £36. Installation is pitched at a confident DIYer with a 13 amp socket under the sink, and the boilers are compact enough that the 4 litre fits a 450 mm cupboard.
Quooker wins on
Range and integration. The COMBI tank holds 7 litres of boiling water and also supplies your ordinary hot tap, so a kitchen far from the boiler gets hot water instantly; the COMBI+ does the same with unlimited hot water. The CUBE adds chilled and sparkling water from the same spout. There are a dozen tap designs, an energy label A on the COMBI, a national network of Quooker’s own engineers, and a resale name that kitchen buyers recognise. If you have a softener, Quooker publishes the conditions under which its tap accepts softened water; Qettle would rather you kept hard water on the boiling side.
Running cost, using the makers’ own figures
Both companies say their tank costs pennies a day to keep hot, and both are probably right, but they measure different things so the numbers cannot simply be lined up. Here is what each publishes and what it works out to.
Qettle, standby
Qettle's FAQ: about 0.15 kWh a day, “just over 4p” at 28p per kWh. That is roughly 55 kWh a year before you draw a cup.
Qettle, per cup
Qettle's FAQ: four cups a day adds about 3.5p, so call it a penny a cup.
Quooker, standby
Quooker's site: 10 watts. Ten watts for 24 hours is 0.24 kWh a day, or about 88 kWh a year; at Qettle's 28p rate that is roughly 7p a day.
Quooker, whole year
Quooker's FAQ: a COMBI consumes 515 kWh a year. That includes heating the boiling and the ordinary hot water you use, so it is not a standby figure.
The bit neither counts
A scaled element heats more slowly and runs longer. In hard water the cost that matters is the cartridge (about £70 a year on Qettle's twice-yearly schedule) and, above 250 mg/L, whether you also need a softener.
Electricity figures are the manufacturers’ claims, not our measurements. The 28p per kWh rate is the one Qettle uses in its own example; substitute your tariff.
Hard water: what each maker tells you to do
A tank held at 100°C is the fastest place in your house for limescale to form, so this is where the two brands genuinely part company.
Qettle
Its filter cartridge is “especially formulated to protect the boiler's heating element from the adverse effects of limescale”. Change it twice a year, deep-clean the boiler annually (Qettle says you can do this yourself), and keep proof of cartridge purchases, which the warranty asks for if you claim on a filter-related fault. On softeners: feed hard water to the boiling side, softened water to the ordinary flows.
Quooker
The in-tank HiTAC filter is for taste and, in Quooker's words, “isn’t a limescale filter”. In hard water Quooker's advice is to soak the aerator in vinegar and to have scale inside the tank dealt with by a maintenance kit or a service. It accepts softened water if the pH is 6.5 to 9.5, there is no excess salt and pressure is at least 2 bar, which makes it the easier tap to pair with a whole-house softener.
Neither
Neither publishes a plain mg/L hardness limit on the pages we read. Ask for one in writing before you order, along with the filter interval at your hardness.
Above 250 mg/L, in London, Kent, Essex, East Anglia and much of the Thames valley, a cartridge slows the damage but a softener stops it. You can request softener quotes for your postcode on our hardness page, and our softener guide explains what a fitted unit costs.
Before you buy either: check your hardness
Enter your postcode for the hardness reading in your supply zone. Under 120 mg/L, the cheaper tap is the sensible one. Over 250 mg/L, budget for cartridges or a softener whichever badge you choose.
Verdict
Buy the Qettle if you want 100°C water, filtered cold and a scale routine you can follow yourself, and you would rather spend the £500 you save on a decade of cartridges. In moderately hard water it is the more rational purchase.
Buy the Quooker if the tank is also going to feed your hot tap, if you want chilled and sparkling from the same spout, if you already have or are planning a softener, or if the kitchen is being sold with the house. You are paying for range and a service network, not for hotter water.
Buy neither yet if your postcode comes back above 250 mg/L and you have no softener. Sort the water first; either tank will thank you.
If both are more than you wanted to spend
Neither Qettle nor Quooker is sold on Amazon UK in any listing we would send you to. The one credible product there is a hot water dispenser rather than a boiling tap: its own small tap and tank, water at around 98°C, no scale filter, and your existing mixer stays. It does the tea job for a fraction of the price.
Near-boiling water on demand, without the refit
InSinkErator HOT150 Instant Hot Water Dispenser
Boiling Water Tap
Why it fits
Near-boiling water on demand from a small under-sink tank, without a £1,000+ kitchen refit
The only boiling-water product in this space with a credible Amazon UK listing: 4.5 stars across 900+ reviews
Sold as a tank-and-tap set for under-sink fitting
What it won't do
Does not reach a true boil: it dispenses near-boiling water at around 98°C, so it is a hot water dispenser rather than a boiling tap
Does not include a scale filter, so in hard water the tank needs regular descaling or an inline filter fitted upstream
On the thing that matters most, the water, yes: both store water at 100°C and both dispense it through a child-safe lever. Quooker has the wider range, the option of a tank that also feeds your ordinary hot tap (COMBI), and the CUBE for chilled and sparkling. Qettle costs roughly half as much and fits a scale-protecting filter as standard. Which is better depends on your budget, your kitchen and, above all, how hard your water is.
How much cheaper is Qettle than Quooker?
At the time of writing Qettle's Mini starts at £480 and the Original 4-in-1 is £545 on qettle.com. Quooker's cheapest tap is the Nordic single tap from £1,050, with the Flex and Fusion from £1,250 on quooker.co.uk. Both prices are before installation, which typically adds £150 to £300, and both makers change prices often.
Does Quooker have a limescale filter?
Not in the way Qettle does. Quooker's FAQ says its HiTAC filter improves taste and “isn’t a limescale filter”. In hard water Quooker advises descaling the aerator and servicing the tank. Qettle's cartridge is “especially formulated to protect the boiler's heating element from the adverse effects of limescale” and Qettle asks you to change it twice a year and deep-clean the boiler annually.
Can I run a Qettle or Quooker on softened water?
Quooker accepts softened water if the pH is between 6.5 and 9.5, there is no excess salt and pressure is at least 2 bar. Qettle takes the opposite line: it suggests feeding hard, unsoftened water to the boiling and filtered side and softened water only to the normal hot and cold flows, and notes that softened water is not recommended for babies. If you have a softener, ask the maker how to plumb it before ordering.
Which costs more to run?
Both makers quote small figures but measure them differently, so they are not directly comparable. Qettle says standby is about 0.15 kWh a day, “just over 4p” at 28p per kWh, with roughly a penny per cup on top. Quooker says its tanks draw 10 watts on standby, which works out at about 0.24 kWh a day, and that a COMBI uses 515 kWh a year in total. Treat all of these as the makers' claims; a hard-water tank that has scaled up will use more than either.
Which should I buy in a hard water area?
Check your postcode hardness first. Under 120 mg/L either tap will run for years on its standard maintenance. Between 120 and 250 mg/L Qettle's scale filter and six-month change interval are the simpler routine. Above 250 mg/L, a whole-house softener protects either tank better than any cartridge; Quooker's stated softened-water conditions make it the easier one to pair with a softener.
