boilingwatertap.

Model vs model

Quooker Flex
vs Zip HydroTap G5 Cube Plus

The Quooker Flex lists at £1,295, £2,735 less than the Zip HydroTap G5 Cube Plus at £4,030.

Every number below comes from the manufacturers' own specification sheets. We highlight which tap leads on each spec; what matters most for your kitchen is your call.

Quooker Flex boiling water tap with pull-out hose in chrome

Quooker

Quooker Flex

Pull-out hose meets boiling water

UK RRP: £1,295

Full review →
Zip HydroTap G5 Cube Plus chrome square-spout tap

Zip Water

Zip HydroTap G5 Cube Plus

Cubed-spout flagship: boiling, chilled and sparkling filtered water

UK RRP: £4,030

Full review →

The differences at a glance

  • The Quooker Flex lists at £1,295, £2,735 less than the Zip HydroTap G5 Cube Plus at £4,030.
  • The Quooker Flex dispenses at 100°C; the Zip HydroTap G5 Cube Plus tops out at 98°C.
  • Declared idle draw is 10 W for the Quooker Flex against 35 W for the Zip HydroTap G5 Cube Plus, which compounds into the standby cost difference below.
  • The Zip HydroTap G5 Cube Plus dispenses filtered drinking water; the Quooker Flex does not.
  • The Zip HydroTap G5 Cube Plus dispenses sparkling water; the Quooker Flex does not.
  • The Zip HydroTap G5 Cube Plus dispenses chilled water; the Quooker Flex does not.
  • The Quooker Flex ships with a 7-year warranty; the Zip HydroTap G5 Cube Plus with a 2-year warranty.

Full specification, side by side

Sourced from manufacturer datasheets. A tick marks the better number on specs where more or less is objectively better.

Quooker Flex vs Zip HydroTap G5 Cube Plus specifications from manufacturer datasheets
SpecQuooker FlexZip HydroTap G5 Cube Plus
UK RRP£1,295£4,030
Boiling temperature100°C98°C
Tank capacity3 L3 L
Idle power10 W35 W
Peak power1600 W2400 W
Flow rate-4 L/min
Filtered waterNoYes
Sparkling waterNoYes
Chilled waterNoYes
Filter typeActive carbon filter inside the tankZip MicroPurity 0.2 micron filter
Finishes68
Warranty7 years2 years
Released20232023

Standby energy

What the idle draw adds up to over a year.

Quooker Flex

Idle draw
10 W
Standby energy / year
88 kWh
Standby cost / year
£24

Zip HydroTap G5 Cube Plus

Idle draw
35 W
Standby energy / year
307 kWh
Standby cost / year
£83

Assumes the manufacturer's declared idle wattage around the clock at £0.27/kWh (UK average, mid-2026). Real usage adds the energy to heat the water you actually draw. Run your own numbers in the running cost calculator.

Strengths and trade-offs

Quooker Flex

What we like

  • Pull-out hose rinses sinks plus full 100°C boiling
  • Same vacuum-insulated tank delivers true boiling water
  • Magnetic dock returns hose neatly after use
  • Boiling flow auto-locks when hose is detached from base

Watch out for

  • £1,295 RRP matches Fusion despite extra moving parts
  • Trustpilot owners report hose fraying within several years
  • Hose replacement is a paid call-out, not 5-min DIY
  • Requires 500mm depth + 200mm width clear undersink space

Zip HydroTap G5 Cube Plus

What we like

  • Instant boiling and chilled water from one tap
  • 0.2-micron MicroPurity filter removes dirt, lead, microplastics and 99.9% of cysts
  • Energy-saving sleep modes and low-impact R290 refrigerant
  • Seven finishes and a 12-month filter interval

Watch out for

  • Factory-set to 98°C rather than true 100°C boiling
  • Under-sink command centre is 470 mm deep
  • Two-year warranty