The recommendation for a 120m2 house is a 10kW stove.
The stove we need must be one that supports a direct, external air supply – in French it’s raccordement air extérieur (directly translates as external air connection) – generally done through 125mm ducting.
Some potentially useful discussion on pistonheads.
The external flue needs to rise to 0.4m (40cm) above the max height of the roof according to building regs.
Our preference is for one that takes 50cm logs.