Venting rules change with efficiency — and mixing them up can lead to moisture buildup, heat exchanger damage, and dangerous combustion issues.

Furnaces are the most problematic component of day-to-day delayed coker operations. This article examines a variety of coker-furnace issues that Chevron Corp. has experienced at its refineries. El ...

Newly-manufactured indoor residential gas furnaces will have to be at least 95% efficient starting in late 2028 under a new rule issued by the U.S. Department of Energy (DOE). In an effort to save ...