What type of heat transfer takes place when a furnace heats up an entire room?

Oh, dude, that's like some basic physics stuff right there. So, when a furnace heats up a room, it's all about good ol' convection, where the hot air rises and circulates, warming up the space. It's like the furnace is playing a game of hot potato with the air in the room. So yeah, convection is the name of the game when it comes to heating up your cozy space.