Model vs model
InSinkErator 3N1 J-Shape
vs Quooker Classic Fusion Square
The InSinkErator 3N1 J-Shape lists at £899, £551 less than the Quooker Classic Fusion Square at £1,450.
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.
InSinkErator
InSinkErator 3N1 J-Shape
Steaming hot, hot and cold from a slim J-shape spout
Typical price: £899
Full review →
Quooker
Quooker Classic Fusion Square
Traditional styling with a squared spout
Typical price: £1,450
Full review →The differences at a glance
- The InSinkErator 3N1 J-Shape lists at £899, £551 less than the Quooker Classic Fusion Square at £1,450.
- The Quooker Classic Fusion Square dispenses at 100°C; the InSinkErator 3N1 J-Shape tops out at 98°C.
- Declared idle draw is 10 W for the Quooker Classic Fusion Square against 11 W for the InSinkErator 3N1 J-Shape, which compounds into the standby cost difference below.
- Tank capacity: 3 L on the Quooker Classic Fusion Square 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 InSinkErator 3N1 J-Shape dispenses filtered drinking water; the Quooker Classic Fusion Square does not.
- The InSinkErator 3N1 J-Shape ships with a 5-year warranty; the Quooker Classic Fusion Square 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 | InSinkErator 3N1 J-Shape | Quooker Classic Fusion Square |
|---|---|---|
| Typical price | £899✓ | £1,450 |
| Boiling temperature | 98°C | 100°C✓ |
| Tank capacity | 2.5 L | 3 L |
| Idle power | 11 W | 10 W✓ |
| Peak power | 1300 W | 1600 W |
| Flow rate | - | - |
| Filtered water | Yes✓ | No |
| Sparkling water | No | No |
| Chilled water | No | No |
| Filter type | - | - |
| Finishes | 2 | 3✓ |
| Warranty | 5 years✓ | 2 years |
| Released | 2020 | - |
Standby energy
What the idle draw adds up to over a year.
InSinkErator 3N1 J-Shape
- Idle draw
- 11 W
- Standby energy / year
- 96 kWh
- Standby cost / year
- £26
Quooker Classic Fusion Square
- Idle draw
- 10 W
- Standby energy / year
- 88 kWh
- Standby cost / year
- £24
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
InSinkErator 3N1 J-Shape
Quooker Classic Fusion Square
What we like
- Period styling in a squared spout for Shaker and classic kitchens
- Patinated brass develops a genuine patina rather than a printed lacquer
- Same PRO3 tank and 100°C boil as the rest of the Fusion range
Watch out for
- 3-in-1 only: no filtered or chilled water without the CUBE upgrade
- Patinated brass needs an occasional beeswax wipe
- Fewer finishes than the standard Fusion (no gold, gunmetal or black)