Model vs model
Franke Omni
vs Quooker Flex
The Franke Omni lists at £1,199, £96 less than the Quooker Flex at £1,295.
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.
The differences at a glance
- The Franke Omni lists at £1,199, £96 less than the Quooker Flex at £1,295.
- Declared idle draw is 10 W for the Quooker Flex against 12 W for the Franke Omni, which compounds into the standby cost difference below.
- Tank capacity: 4.2 L on the Franke Omni versus 3 L on the Quooker Flex. Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- The Franke Omni dispenses filtered drinking water; the Quooker Flex does not.
- The Quooker Flex ships with a 7-year warranty; the Franke Omni with a 3-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 Omni | Quooker Flex |
|---|---|---|
| UK RRP | £1,199✓ | £1,295 |
| Boiling temperature | 100°C | 100°C |
| Tank capacity | 4.2 L | 3 L |
| Idle power | 12 W | 10 W✓ |
| Peak power | 1500 W | 1600 W |
| Flow rate | - | - |
| Filtered water | Yes✓ | No |
| Sparkling water | No | No |
| Chilled water | No | No |
| Filter type | Franke 08 filter cartridge | Active carbon filter inside the tank |
| Finishes | 4 | 6✓ |
| Warranty | 3 years | 7 years✓ |
| Released | 2023 | 2023 |
Standby energy
What the idle draw adds up to over a year.
Franke Omni
- Idle draw
- 12 W
- Standby energy / year
- 105 kWh
- Standby cost / year
- £28
Quooker Flex
- 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
Franke Omni
What we like
- True 100°C confirmed in Trusted Reviews testing
- Built-in filter delivers chilled filtered water without add-on
- Spout body stays cool even during prolonged dispensing
- 4.2L tank larger than most rivals under £1,200
Watch out for
- Filter cartridges cost roughly £80 every 6-9 months
- Owners report flow slowdown after 2 years in hard-water areas
- Heating tank replacement reported at around £400 out of warranty
- Low mains pressure (under 1.5 bar) causes noticeable dribble
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
- £1,295 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