Most cities here require low or ultra low emission burners, which burn at high temperature, so often the temperature is kept low. And you are absolutely correc

Most cities here require low or ultra low emission burners, which burn at high temperature, so often the temperature is kept low. And you are absolutely correct about venting heat. I have not to my knowledge seen a home here with an externally ducted air source. So the room is heated, and heat (warm air) is sucked out of the rest of the house. Wood is cheap here, and so people often believe it is more efficient jot counting the inefficiencies of wood.