FTIR spectra of mixtures of fluoroform (F₃CH) and ammonia (NH₃), have been studied in liquid xenon between 5400 and 500 cm ^-1. Spectroscopic evidence for the formation of a hydrogen bonded complex has been found and the complexation enthalpy ΔLXeH° in the temperature interval between 173 and 215 K, was determined to be 14.4 (7) kJ mol^-1. The parallel fundamentals ν₁ and ν₂ of ammonia reveal a strong narrowing effect upon complex formation, whereas the perpendicular fundamentals ν₃ and ν₄ show a modest decrease of their width. CP corrected ab initio calculations at the MP2(FULL)/6-311++G(3df,2pd) level predict a linear geometry for the complex, characterized by a small red shift of the CH stretch frequency of fluoroform. The ab initio interaction energy was found to be compatible with the isolated molecule complexation energy extrapolated from the experimental ΔLXeH°.