After our first winter in our new home, we exprience some normal shrinkage and all areas were repaired. The next winter was mild and no shrinkage. We credited our the April Air humidifiers. The winter was exceptionally cold, our humidity dropped to below twenty percent. We cranked up the wall wall control but it didn't help. When we notice separtion and shrinkage of our moldings,doors, floors and baseboards we called the firm who had installed the heating and air system only to learn our humidifers were never installed. Thus our problem. They are refusing to pay stating that most of the shirnkage would have happened anyway because of the unseasonably cold weather. I have read that wood hits a point of equalibrium with the indoor environment and as long as the humidity stays within a normal range this problem would not have occured and that wood shrinkage is less a factor of heat and directly attributable to low humidity. I would appreciate your comments and thoughts on the problem.