What tool is primarily used to measure combustion efficiency?

The tool primarily used to measure combustion efficiency is a combustion analyzer. This device is specifically designed to assess the combustion process in appliances, analyzing gases emitted during combustion to determine how effectively fuel is being converted into energy.

A combustion analyzer measures key emissions like carbon monoxide (CO), carbon dioxide (CO2), oxygen (O2), and other pollutants, as well as combustion temperatures and efficiency ratios. By providing insights into the combustion process, it helps technicians adjust appliances to ensure optimal performance and safety. This is critical in identifying issues such as incomplete combustion, which can lead to energy loss and hazardous conditions.

While other instruments like gas pressure gauges and thermometers are useful for various aspects of appliance testing, they do not provide the comprehensive data required to evaluate combustion efficiency directly. A smoke detector serves a different purpose, primarily for safety by detecting the presence of smoke due to combustion products, rather than measuring how efficiently combustion occurs.