In South Korea, the most common heating system is ondol, a traditional method that uses floor heating to warm up the space. To use it effectively, you can control the temperature and operating time through a control panel, usually mounted on the wall. Set the temperature to around 20-24°C to stay comfortable without consuming too much energy. At night, you can lower the temperature to save on costs. When turning on the system, make sure to close windows and doors to prevent heat loss. Additionally, many apartments have a timer function that helps you optimize usage time. Be sure to carefully check your rental contract, as heating fees are sometimes charged separately, especially during winter.