text: Yes, considering santa always enters through a chimney (due to him being traditional), even if there is no fire place, he can enter through a microwave oven.  Houses that don't have fireplaces, generally have some sort of small vent which is essentially the chimney.  This would then generally lead to some sort of grating which would be far too small for a man to compress himself and fit through.  \n\nTherefore, santa must teleport.  His mass is converted into energy and then re assembles elsewhere.  Since microwave radiation is a form of energy, he can surely enter a home through a microwave oven