Model vs model
Franke Minerva
vs Qettle Signature Modern 4-in-1 (4L)
The Qettle Signature Modern 4-in-1 (4L) lists at £870, £29 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.
For either tap. Free and no obligation.
Qettle
Qettle Signature Modern 4-in-1 (4L)
Square-spout 100°C boiling tap in marine-grade stainless steel
Typical price: £870
Full review →The differences at a glance
- The Qettle Signature Modern 4-in-1 (4L) lists at £870, £29 less than the Franke Minerva at £899.
- Declared idle draw is 12 W for the Franke Minerva against 14 W for the Qettle Signature Modern 4-in-1 (4L), which compounds into the standby cost difference below.
- Tank capacity: 4.7 L on the Franke Minerva versus 4 L on the Qettle Signature Modern 4-in-1 (4L). Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- The Qettle Signature Modern 4-in-1 (4L) dispenses filtered drinking water; the Franke Minerva 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 | Franke Minerva | Qettle Signature Modern 4-in-1 (4L) |
|---|---|---|
| Typical price | £899 | £870✓ |
| Boiling temperature | 100°C | 100°C |
| Tank capacity | 4.7 L | 4 L |
| Idle power | 12 W✓ | 14 W |
| Peak power | 1500 W | 1500 W |
| Flow rate | - | - |
| Filtered water | No | Yes✓ |
| Sparkling water | No | No |
| Chilled water | No | No |
| Filter type | - | Q08 extruded carbon block cartridge |
| Finishes | 2 | 5✓ |
| Warranty | 2 years | 2 years |
| Released | 2018 | 2021 |
Where to buy
Checked manually and dated; the retailer's page is always the live source. Affiliate links, disclosed as such. Commission never changes our comparisons. How affiliate links work here
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 Modern 4-in-1 (4L)
- Idle draw
- 14 W
- Standby energy / year
- 123 kWh
- Standby cost / year
- £33
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 Modern 4-in-1 (4L)
What we like
- 4-litre tank serves up to 8 cups in one go
- Marine-grade stainless steel tap, engineered in the UK
- Two-stage child safety: button and turn before boiling water flows
- Choice of round or square spout in stainless, PVD colour or etched finishes
Watch out for
- 17.5-minute initial heat-up and 10-minute recovery after a full tank
- Standard kit does not include a pressure reducing valve
- Two-year warranty
Common questions
Franke Minerva vs Qettle Signature Modern 4-in-1 (4L): frequently asked
- What is the difference between the Franke Minerva and the Qettle Signature Modern 4-in-1 (4L)?
- The Qettle Signature Modern 4-in-1 (4L) lists at £870, £29 less than the Franke Minerva at £899. Declared idle draw is 12 W for the Franke Minerva against 14 W for the Qettle Signature Modern 4-in-1 (4L), which compounds into the standby cost difference below. Tank capacity: 4.7 L on the Franke Minerva versus 4 L on the Qettle Signature Modern 4-in-1 (4L). Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- Which is cheaper, the Franke Minerva or the Qettle Signature Modern 4-in-1 (4L)?
- The Qettle Signature Modern 4-in-1 (4L) lists at £870, £29 less than the Franke Minerva at £899.
- Which is better for hard water, the Franke Minerva or the Qettle Signature Modern 4-in-1 (4L)?
- The Qettle Signature Modern 4-in-1 (4L) has a built-in filter, the better choice in a hard water area: it reduces scale build-up in the tank and improves taste. The Franke Minerva has no built-in filtration, so its tank will scale faster without a separate softener.