Setting air conditioning to 27°C with a fan lowers perceived temperature by about 4°C, reducing energy use

WHO Warns Fans Riskier Than AC in Extreme Heat, 1,889 Heat Illnesses Reported

Reliability 63 · highLIVE17 min agoAugust 3, 2026

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Summary

It added that when using air conditioning, setting it to 27°C and using a fan together can lower the perceived temperature by about 4°C and also reduce cooling energy use. On the 26th of last month, a resident in Dongja-dong, Yongsan-gu, Seoul, was cooling off with a fan in a jjokbang village. This year's cumulative heat-related illnesses, including deaths, have been tallied at 1,889.

Furthermore, According to the Korea Disease Control and Prevention Agency's heat-related illness emergency room surveillance system, 96 heat-related illness patients were reported in emergency rooms nationwide on the 1st.

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It added that when using air conditioning, setting it to 27°C and using a fan together can lower the perceived temperature by about 4°C and also reduce cooling energy use.
according to Kyunghyang Shinmun +1
On the 26th of last month, a resident in Dongja-dong, Yongsan-gu, Seoul, was cooling off with a fan in a jjokbang village.
according to Kyunghyang Shinmun
This year's cumulative heat-related illnesses, including deaths, have been tallied at 1,889.
according to Maeil Business
According to the Korea Disease Control and Prevention Agency's heat-related illness emergency room surveillance system, 96 heat-related illness patients were reported in emergency rooms nationwide on the 1st.
according to Maeil Business