What is the primary function of a combustion analyzer in HVAC systems?

The primary function of a combustion analyzer in HVAC systems is to measure flue gases and assess combustion efficiency and safety. This device is critical for evaluating how effectively a heating appliance is burning fuel and whether it is operating safely within specified limits. By analyzing the gases produced during combustion, the analyzer can provide valuable data about the efficiency of the combustion process, such as oxygen levels, carbon monoxide levels, and other emissions. This information is essential for ensuring optimal performance of HVAC systems, reducing energy waste, and minimizing harmful emissions, which in turn contributes to safety and environmental regulations.

Other options, while they pertain to HVAC systems, serve different purposes: regulating indoor temperature based on occupancy refers to controls and thermostats, circulating air pertains to fans and blowers, and analyzing air pressure differentials relates to testing for system balance and duct integrity. None of these functions align with the specific role of a combustion analyzer.