Model vs model
Franke Mythos Water Hub 6-in-1
vs InSinkErator 3N1 J-Shape
The InSinkErator 3N1 J-Shape lists at £899, £1,700 less than the Franke Mythos Water Hub 6-in-1 at £2,599.
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.
Franke
Franke Mythos Water Hub 6-in-1
Hot, cold, filtered, chilled, sparkling and boiling from one spout
Typical price: £2,599
Full review →
InSinkErator
InSinkErator 3N1 J-Shape
Steaming hot, hot and cold from a slim J-shape spout
Typical price: £899
Full review →The differences at a glance
- The InSinkErator 3N1 J-Shape lists at £899, £1,700 less than the Franke Mythos Water Hub 6-in-1 at £2,599.
- The Franke Mythos Water Hub 6-in-1 dispenses at 100°C; the InSinkErator 3N1 J-Shape tops out at 98°C.
- Declared idle draw is 11 W for the InSinkErator 3N1 J-Shape against 25 W for the Franke Mythos Water Hub 6-in-1, which compounds into the standby cost difference below.
- Tank capacity: 4 L on the Franke Mythos Water Hub 6-in-1 versus 2.5 L on the InSinkErator 3N1 J-Shape. Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- The Franke Mythos Water Hub 6-in-1 dispenses sparkling water; the InSinkErator 3N1 J-Shape does not.
- The Franke Mythos Water Hub 6-in-1 dispenses chilled water; the InSinkErator 3N1 J-Shape does not.
- The InSinkErator 3N1 J-Shape ships with a 5-year warranty; the Franke Mythos Water Hub 6-in-1 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.
| Spec | Franke Mythos Water Hub 6-in-1 | InSinkErator 3N1 J-Shape |
|---|---|---|
| Typical price | £2,599 | £899✓ |
| Boiling temperature | 100°C✓ | 98°C |
| Tank capacity | 4 L | 2.5 L |
| Idle power | 25 W | 11 W✓ |
| Peak power | 2200 W | 1300 W |
| Flow rate | 2 L/min | - |
| Filtered water | Yes | Yes |
| Sparkling water | Yes✓ | No |
| Chilled water | Yes✓ | No |
| Filter type | Pro M Connect: active carbon + ion-exchange resin | - |
| Finishes | 4✓ | 2 |
| Warranty | 2 years | 5 years✓ |
| Released | 2022 | 2020 |
Standby energy
What the idle draw adds up to over a year.
Franke Mythos Water Hub 6-in-1
- Idle draw
- 25 W
- Standby energy / year
- 219 kWh
- Standby cost / year
- £59
InSinkErator 3N1 J-Shape
- Idle draw
- 11 W
- Standby energy / year
- 96 kWh
- Standby cost / year
- £26
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
Franke Mythos Water Hub 6-in-1
What we like
- Six functions from one tap: boiling, chilled, ambient and sparkling plus hot and cold mains
- All-in-one under-sink unit houses boiler, chiller, CO2 bottle and filter
- 12-month filter interval with built-in RFID replacement reminder
- Pro M Connect filter adds ion-exchange limescale protection
Watch out for
- Sparkling capacity is 0.6 litres per fill, with a CO2 cylinder to replace
- Spout swivel is limited to 180 degrees
- Personalised settings need the Franke Home App
- Two-year warranty