Model vs model
Quooker Flex
vs Quooker Fusion Square
Quooker Flex and Quooker Fusion Square compared on manufacturer specifications.
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 →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 | Quooker Flex | Quooker Fusion Square |
|---|---|---|
| Typical price | £1,250 | £1,250 |
| Boiling temperature | 100°C | 100°C |
| Tank capacity | 3 L | 3 L |
| Idle power | 10 W | 10 W |
| Peak power | 1600 W | 1600 W |
| Flow rate | - | - |
| Filtered water | No | No |
| Sparkling water | No | No |
| Chilled water | No | No |
| Filter type | Active carbon filter inside the tank | - |
| Finishes | 6 | 7✓ |
| Warranty | 2 years | 2 years |
| Released | 2023 | - |
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
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
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
- £1,250 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
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)