Winix, which manufactures dehumidifiers and other home appliances, jumped 21.45 percent to close at 5,860 won. Paseco and Shinil Electronics, both known for electric fans and seasonal home appliances, gained 10.44 percent and 3.56 percent, respectively. SPG, a motor manufacturer whose products are widely used in cooling appliances and industrial equipment, rose 14.90 percent.
The gains came as the country experienced one of its most severe heat waves on record, with temperatures climbing above 40 degrees Celsius in some areas. Investors piled into shares of cooling appliance makers on expectations that demand would remain strong despite broader market volatility.
Early consumer data also suggest that demand is accelerating. According to the Korea Consumer Agency, inquiries about air conditioners in June surged 111 percent from the previous month, while those for electric fans climbed 109 percent.
Forecasters expect the heat wave to continue. The Korea Meteorological Administration (KMA) warned on Monday that "parts of the Jeolla and Gyeongsang regions are expected to experience life-threatening levels of extreme heat, with maximum temperatures reaching 39 degrees Celsius." The agency issued its highest-level heat warnings for parts of South Jeolla and South Gyeongsang provinces.
The agency urged people to avoid unnecessary outdoor activities, stay in air-conditioned places and remain hydrated. It also advised people to check on family members, neighbors and elderly people living alone, and to call emergency services if anyone shows signs of heat-related illness.
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