Model vs model
Franke Minerva
vs InSinkErator GN1100
The InSinkErator GN1100 lists at £389, £510 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.
InSinkErator
InSinkErator GN1100
Compact dedicated steaming-hot tap to pair with your mixer
Typical price: £389
Full review →The differences at a glance
- The InSinkErator GN1100 lists at £389, £510 less than the Franke Minerva at £899.
- The Franke Minerva dispenses at 100°C; the InSinkErator GN1100 tops out at 98°C.
- Declared idle draw is 11 W for the InSinkErator GN1100 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 2.5 L on the InSinkErator GN1100. Bigger tanks serve more cups back to back; smaller tanks take less cupboard space.
- The InSinkErator GN1100 dispenses filtered drinking water; the Franke Minerva does not.
- The InSinkErator GN1100 ships with a 5-year warranty; the Franke Minerva 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 Minerva | InSinkErator GN1100 |
|---|---|---|
| Typical price | £899 | £389✓ |
| Boiling temperature | 100°C✓ | 98°C |
| Tank capacity | 4.7 L | 2.5 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 | - | - |
| Finishes | 2 | 2 |
| Warranty | 3 years | 5 years✓ |
| Released | 2018 | 2018 |
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
InSinkErator GN1100
- 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