Look for warm dark enclosed places, drawers, under the water heater, etc. set a "trap" of a hide box with a heat pad (regulated of course) and a food item if you have one. Also, if you dont find him tonight, sprinkle flour around on the ground and look for tracks in the morning - he will most likely be close to his enclosure, they dont usually want to wander far, they just want to find warm shelter. Good Luck!