Q. I own a rental property, and the tenants contacted me recently after they had returned from out of town. They reported that there was water running down the walls in several of the upstairs ...

I'm going to guess that you have a newer furnace. If that's true, you're probably getting condensation in the flue. Older furnaces didn't have that issue. The hot flue gas they produced literally shot ...

This article was published 20/03/2004 (7200 days ago), so information in it may no longer be current. QUESTION: I live in an older home with an outside chimney. Two years ago I replaced the old ...