Abstract: The heat flow and temperature (T) distributions in ground heated apartment-room was mathematically modeled, theoretically analyzed in aerodynamics and thermodynamics and numerically simulated with ANSYS.The influence of the inlet water temperature and the “square spiral” and the “rectangular wave” water-pipe configurations on the T-profile was investigated. The simulated results show that the pipe configuration has a major impact. To be specific, the two pipe configurations account for slightly different T-profiles; when it comes to cross-sectional vertical T-distribution, the rectangular-wave pipe produces a “concentric hemi-oval” T-profile and heat flowrate of 0. 15m/s, whereas the square-spiral pipe generates a “saddle-shaped” T-distribution and heat flow-rate of 0.18m/s, forming pleasant warm breeze. We suggest that the simulated results be of some technological interest for indoor heating.