Q: I have a swamp cooler that no longer works. It blows air, but the air is not cool. The unit used to make a trickling noise but no longer does. What can be done to bring the cool air back? A: Swamp ...

With April nearly upon us, the march to inevitable hot weather has begun. What are commonly known in these parts as swamp coolers operate on a simple principle: When moisture in the air evaporates, it ...