Model vs model
Qettle Signature
vs Quooker Fusion Square
The Qettle Signature lists at £795, £455 less than the Quooker Fusion Square at £1,250.
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
Quooker Fusion Square
The best-selling all-in-one in a squared-off spout
Typical price: £1,250
Full review →The differences at a glance
- The Qettle Signature lists at £795, £455 less than the Quooker Fusion Square at £1,250.
- Declared idle draw is 10 W for the Quooker Fusion Square against 11 W for the Qettle Signature, which compounds into the standby cost difference below.
- Tank capacity: 3 L on the Quooker Fusion Square versus 2 L on the Qettle Signature. Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- The Qettle Signature dispenses filtered drinking water; the Quooker Fusion Square does not.
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 | Qettle Signature | Quooker Fusion Square |
|---|---|---|
| Typical price | £795✓ | £1,250 |
| Boiling temperature | 100°C | 100°C |
| Tank capacity | 2 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 | Q08 extruded carbon block cartridge | - |
| Finishes | 3 | 7✓ |
| Warranty | 2 years | 2 years |
| Released | 2023 | - |
Standby energy
What the idle draw adds up to over a year.
Qettle Signature
- Idle draw
- 11 W
- Standby energy / year
- 96 kWh
- Standby cost / year
- £26
Quooker 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
Qettle Signature
What we like
- Compact 2L tank fits tighter under-sink cabinets
- Hits 100°C boiling matching premium-brand temperatures
- £795 entry into Qettle's marine-grade Signature line
- Trustpilot reviewers cite responsive UK customer service
Watch out for
- 2L tank delivers only 4 mugs per fill in practice
- Some users note aggressive water release on dispense
- Handle can slip into filter mode accidentally
- Same 2-year warranty inherits Original reliability concerns
Quooker Fusion Square
What we like
- True 100°C boil from the same PRO3 tank as the Fusion Round
- Squared profile suits handleless and contemporary kitchens
- Seven finishes including patinated brass, gold and rose copper
- Quooker UK holds a high Trustpilot rating across 12,000+ reviews
Watch out for
- £1,250 buys boiling plus standard hot and cold only
- Filtered, chilled or sparkling water needs the separate CUBE module
- 2-year warranty on tap and tank (SWAP is a paid out-of-warranty tank swap)