boilingwatertap.

Model vs model

Qettle Signature Modern 4-in-1 (4L)
vs Zip HydroTap Classic

The Qettle Signature Modern 4-in-1 (4L) lists at £1,110, £3,255 less than the Zip HydroTap Classic at £4,365.

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.

Qettle Signature Modern 4-in-1 boiling water tap with 4 litre tank

Qettle

Qettle Signature Modern 4-in-1 (4L)

Square-spout 100°C boiling tap in marine-grade stainless steel

UK RRP: £1,110

Full review →
Zip HydroTap Classic chrome tap with boiling and chilled buttons

Zip Water

Zip HydroTap Classic

Boiling, chilled, sparkling, filtered

UK RRP: £4,365

Full review →

The differences at a glance

  • The Qettle Signature Modern 4-in-1 (4L) lists at £1,110, £3,255 less than the Zip HydroTap Classic at £4,365.
  • The Qettle Signature Modern 4-in-1 (4L) dispenses at 100°C; the Zip HydroTap Classic tops out at 99°C.
  • Declared idle draw is 14 W for the Qettle Signature Modern 4-in-1 (4L) against 35 W for the Zip HydroTap Classic, which compounds into the standby cost difference below.
  • The Zip HydroTap Classic dispenses sparkling water; the Qettle Signature Modern 4-in-1 (4L) does not.
  • The Zip HydroTap Classic dispenses chilled water; the Qettle Signature Modern 4-in-1 (4L) does not.
  • The Zip HydroTap Classic ships with a 3-year warranty; the Qettle Signature Modern 4-in-1 (4L) 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.

Qettle Signature Modern 4-in-1 (4L) vs Zip HydroTap Classic specifications from manufacturer datasheets
SpecQettle Signature Modern 4-in-1 (4L)Zip HydroTap Classic
UK RRP£1,110£4,365
Boiling temperature100°C99°C
Tank capacity4 L4 L
Idle power14 W35 W
Peak power1500 W2000 W
Flow rate--
Filtered waterYesYes
Sparkling waterNoYes
Chilled waterNoYes
Filter typeQ08 extruded carbon block cartridgeZip GlobalPlus 0.2 micron filter
Finishes55
Warranty2 years3 years
Released20212021

Standby energy

What the idle draw adds up to over a year.

Qettle Signature Modern 4-in-1 (4L)

Idle draw
14 W
Standby energy / year
123 kWh
Standby cost / year
£33

Zip HydroTap Classic

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

Qettle Signature Modern 4-in-1 (4L)

What we like

  • 4-litre tank serves up to 8 cups in one go
  • Marine-grade stainless steel tap, engineered in the UK
  • Two-stage child safety: button and turn before boiling water flows
  • Choice of round or square spout in stainless, PVD colour or etched finishes

Watch out for

  • 17.5-minute initial heat-up and 10-minute recovery after a full tank
  • Standard kit does not include a pressure reducing valve
  • Two-year warranty

Zip HydroTap Classic

What we like

  • Filtered boiling, chilled and sparkling from one tap
  • Touchscreen with PIN protection and energy-saving sleep modes
  • 0.2 micron NSF-certified filter included as standard
  • Largest UK engineer network for service and maintenance

Watch out for

  • £4,365 RRP is several times rival 4-in-1 prices
  • Installation around £520 extra on top of hardware
  • Ongoing CO2 canister costs for sparkling function
  • Designed primarily for commercial use, residential overkill