Low-emissivity coated panes reduce heat transfer by radiation, which, depending on which surface is coated, helps prevent heat loss (in cold climates) or heat gains (in warm climates).
low-EmissiviTY coaTe.d paNES reDuce heAT trAnSFEr bY rADIation, whiCH, depenDInG On WhiCh surfAce iS coated, helps PrevEnt heat lOss (iN cOld cliMaTEs) OR HEat gAins (In wArm cLimates)