The Korea Consumer Agency found that only two of six tested portable air conditioners could lower a room's temperature to a specific target [1].
These findings come as demand for portable cooling units rises, revealing significant performance gaps between brands and emphasizing the critical role of proper installation in maintaining efficiency [1].
Researchers conducted the tests in a laboratory set to an initial indoor temperature of 35°C [1]. The goal was to determine how quickly each unit could reach a target temperature of 24°C [1]. According to the results, only products from LG Electronics and E-Param successfully hit the mark [1].
LG Electronics demonstrated the highest performance in the group. Senior Researcher Koo Ji-hoon said the LG product was the fastest, reaching the 24°C goal in 26 minutes [1]. The E-Param unit followed, reaching the target temperature in 36 minutes [1]. The remaining four models failed to reach the target temperature during the trial [1].
Beyond the hardware, the study focused on the impact of external air leaks. The agency said that many units struggle because hot air from outside enters through gaps in the window installation [1].
"The cause is the inflow of hot air from outside through window gaps," Koo said [1].
This suggests that the perceived failure of some portable units may be tied to the physical seal between the device's exhaust hose and the window frame, rather than the compressor's power alone [1].
“Only two of six tested portable air conditioners could lower a room's temperature to a specific target.”
The disparity in performance suggests that portable air conditioners are highly sensitive to environmental variables. While brand-name efficiency varies, the failure of most units to hit the target temperature underscores a systemic issue with window sealing kits. For consumers, this indicates that the hardware's specifications are less important than the quality of the installation seal to prevent thermal leakage.
