Radiant heating and cooling systems based on capillary micro tubes have been gaining much popularity due to large operational area, space saving, small difference between temperatures of flowing water and air inside the room and consequently improved energy efficiency. The objective of this review is to find out fields of applying capillary micro tubes, to discover advantages and limitations and analysis of future development. Based on research results it can be concluded that heating system based on capillary mats is an effective and promising solution for residential and public buildings.