Conduction, convection and radiation –  The transfer of energy through the various states of matter; liquid, solids and gasses, and vacuums affect the building and occupants as follows: 

Thermal gain and loss, sustainable construction, Building Regulation compliance, Condensation and interstitial condensation, Building position and orientation, Light, shade, plant growth, mould, fungi, algi growth, energy cost, windows and glazing, comfort, mood, ventilation, type of heating, ventilation and air conditioning