TESTING EVERY FLAME-fired appliance you come into contact with is a move in the right direction. We discussed why you need to do this in last month’s column (“Do you test your gas appliances for CO?” ...

As HVACR technicians, assessing whether the furnace we’re servicing is working efficiently is critical to understanding the overall health of the HVAC system — and to the success of our service call.

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 ...

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 ...

Rosemount CX2100 In Situ Oxygen Analyzer with remote setup and diffuser options streamlines maintenance and lowers total cost ...