Warm Spot on Interior Wall: Possible Causes?
I'm a little worried right now. Tonight, my husband asked me not to store bread on top of the breadbox because "the wall is really warm there and it makes the bread dry and hard". Apparently, he's been aware of this heat for some time, but I had no idea what he was talking about. Putting my hand on the wall there, yes, it was warm to the touch, and I can't figure out why.
The spot is about six inches above the kitchen counter in an interior wall. On the kitchen side, there is an outlet about 20 inches to the right of the spot, and it is not warm anywhere around that outlet. On the opposite side of the wall is the living room, and the spot feels warm there, too. There are no heat vents in the wall, there is an air intake vent up near the ceiling in the living room side, but the warm area isn't directly below it or anything.
Any ideas what the warm spot could be?
The house was built in 1969 and appears to have always been well-maintained.