Question: Several years ago, we had a tankless water heater and very high efficiency furnace installed and the installers tape-sealed off the old metal furnace chimney in the basement, as the new ...

When facing a residential oil-fired furnace that is acting up, you want to get the situation under control as quickly as possible. A problem during the heating season will bring a call from an anxious ...

Q. Our house was built in 1965 and has an interior chimney with three flues, each with clay liners. One flue is unused and was probably installed for a connection to a furnace that was not needed; the ...