Model vs model
Franke Minerva
vs Qettle Signature
The Qettle Signature lists at £549, £350 less than the Franke Minerva at £899.
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 Qettle Signature lists at £549, £350 less than the Franke Minerva at £899.
- Declared idle draw is 11 W for the Qettle Signature against 12 W for the Franke Minerva, which compounds into the standby cost difference below.
- Tank capacity: 4.7 L on the Franke Minerva 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 Franke Minerva does not.
- The Franke Minerva ships with a 3-year warranty; the Qettle Signature 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 Minerva | Qettle Signature |
|---|---|---|
| UK RRP | £899 | £549✓ |
| Boiling temperature | 100°C | 100°C |
| Tank capacity | 4.7 L | 2 L |
| Idle power | 12 W | 11 W✓ |
| Peak power | 1500 W | 1300 W |
| Flow rate | - | - |
| Filtered water | No | Yes✓ |
| Sparkling water | No | No |
| Chilled water | No | No |
| Filter type | - | Q08 extruded carbon block cartridge |
| Finishes | 2 | 3✓ |
| Warranty | 3 years✓ | 2 years |
| Released | 2018 | 2023 |
Standby energy
What the idle draw adds up to over a year.
Franke Minerva
- Idle draw
- 12 W
- Standby energy / year
- 105 kWh
- Standby cost / year
- £28
Qettle Signature
- 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 Minerva
What we like
- £899 RRP undercuts most 100°C branded competitors
- 4.7L tank capacity highest in the sub-£900 segment
- Genuine 100°C dispense matches premium models
- M-Box install system fits in under 30 minutes for a plumber
Watch out for
- Review Centre reports flow degradation within first year
- No built-in filter (scale build-up in hard-water areas)
- Customer support email-only, no engineer home visits
- Trustpilot mentions boiler failures near warranty expiry
Qettle Signature
What we like
- Compact 2L tank fits tighter under-sink cabinets
- Hits 100°C boiling matching premium-brand temperatures
- Slimmer £549 entry into the Qettle range
- Trustpilot reviewers cite responsive UK customer service
Watch out for
- 2L tank delivers only 3 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