In the development of air conditioners, various tests are conducted in order to provide users with high‑performance products, and measurement data on the following items are collected. For example, items listed in air conditioner catalogs include cooling and heating capacities, power, current, power factor, and noise. Items for measuring cooling and heating capacities include temperature, humidity, electrical input, voltage, current, and airflow volume. Items for comfort and quality include noise, vibration, radio noise, and airflow speed.