We have tested over 100+ air conditioners, from window to split ACs, focusing on comfort, energy efficiency, and more. We know air conditioners inside and out.
We measure the time it takes to cool a room to test the cooling power. We test at different temperatures.
Use a decibel meter at various fan speeds and distances to evaluate noise levels.
Calculate electricity usage over time to assess energy efficiency. Compare to published energy efficiency ratios.
Introduce dirt/dust and inspect filters afterwards to evaluate air filtration.
Test all modes, settings, timers, WiFi connectivity, etc. to evaluate if features work as advertised.