A mixed or multi-fuel fireplace combines the two most used fuels for home heating, wood and pellets.

Girolami in particular offers the  characteristic of being able to burn biomass (pellets, olive pits, corn, ground shells...)  allowing  the user to combine the use of both this biomass and firewood automatically, since the multi-fuel system developed by Girolami allows the machine to operate "intelligently" by changing the fuel automatically without the need to be present.