You can absolutely add a wood burning stove to an existing home! In fact, many people choose to do this in order to have a more efficient and effective heating system. There are a few things to keep in mind when adding a wood burning stove to an existing home, however. First, you will need to make sure that the chimney is in good working order and is the correct size for the stove. Secondly, you will need to install some form of ventilation in order to prevent any dangerous fumes from building up inside the home. Finally, you should have your stove professionally installed by a qualified technician in order to ensure safety and proper operation.