You might remember the days when a boiler tune-up mostly meant adjusting the flame. The flame was supposed to be solid blue with the tips slightly rounded. If the flame was soft, wavy and contained ...

Most aspects of a cylinder head are relatively straightforward and easily grasped. Valve size, deck thickness and combustion chamber volume are often topics of discussion and qualify the design's ...

The combustion analyzer has become a modern mystery to most service technicians. Let's face it; there isn't a lot of information available on performing a combustion analysis on residential heating ...