<P> With the traditional ondol heating, the floor closer to the furnace was normally warm enough, and the warmest spots reserved for elders and honored guests . Ondol had problems such as environmental pollution and carbon monoxide poisoning resulting from burning coal briquettes . Thus, other technology heats modern Korean homes . </P> <P> The famous American architect, Frank Lloyd Wright, was building a hotel in Japan, and was invited to a Japanese family's house . The homeowner had experienced the ondol in Korea, and he built an ondol room in his house . Wright reportedly was so impressed that he invented radiant floor heating which uses hot water as the heating medium . Some of Wright's buildings employed this system . </P> <P> Instead of ondol - hydronic radiant floor heating, modern - day houses such as high - rise apartments have a modernized version of the ondol system . Many architects know the advantages and benefits of ondol, and they are using ondol in modern houses . Since the ondol has been introduced to many countries, it is beginning to be considered as one of the systems of home heating . Modern ondol are not same as the original version . Almost all Koreans use modern versions, so it is hard to find the traditional ondol system in Korean houses . </P> <Ul> <Li> <P> High exhaust vents jutting sideways </P> </Li> <Li> <P> Chimney for fumes </P> </Li> <Li> <P> Chimney </P> </Li> <Li> <P> Exhaust vents as sideways - oriented pipes </P> </Li> </Ul>

Ondol (heated floor during winter) suwon korea