I'm curious why our neighbors dryer vent would be spewing out visible condensation and ours would not. They are about 40 feet apart, temperature is around 42°, both running at the same time. Here are pictures of the both during operation. Neighbors: Ours: I have a few thoughts: Too much lint in their vent (i cleaned ours out a few months ago). They overload their dryer so more water vapor is being exhausted. They have one of those new steam dryers so, again, more water vapor.