Lobbe heats both fast and slow. The steel sections are hot straight away. The special concrete fire bricks are delightfully slow. Once the Lobbe has reached its temperature, it will still be 40°C 6 hours on.
| Fuel Type | Wood |
| Minimum Output | 1.5 kW |
| Maximum Output | 8 k W |
| Nett Efficiency | 80% |
| Gross Efficiency | 72.7% |