A Combustion Analyzer is a tool used to measure and interpret gases from a combustion appliance like a furnace, boiler, or hot water heater. This measurement helps technicians identify issues with an appliance, and help them determine the best way to address those issues. Most importantly, combustion analyzers ensure that the fuel-to-air ratio is correct so that the appliance is burning as completely as possible. Using the wrong ratio wastes energy and can create dangerous carbon monoxide (CO) emissions.

In addition to measuring gas concentrations, a combustion analyzer should be capable of detecting flue gas temperatures and draft pressure. This allows for a more complete diagnostic process, and provides information vital to ensuring that the furnace is functioning at its best.

Combustion Analyzer: A Guide to Efficient Heating Systems

Look for a combustion analyzer with field-replaceable sensors to minimize downtime when the instrument needs to be sent in for calibration. This is especially true for CO and O2 sensors, as they are subject to constant exposure to the atmosphere and can deteriorate quickly. Fieldpiece analyzers offer patent-pending SensorVault technology, which seals the O2 and CO sensors when not in use, extending their life by up to 4-years.

The YELLOW JACKET CA502 and CA502P are great examples of a combustion analyzer that has all the features HVAC techs need to get the job done right. It displays six simultaneous readings on a high-contrast 5.5” display, has a magnetic protective holster, and includes carbon monoxide over limit protection and a 7″ duct probe.