The methods of the kinetic theory are applied for the description of charge and heat transfer from a rarefied plasma to a spherical particle for an arbitrary ratio between Debye length and particle radius. Different models of the velocity distribution functions of the charged plasma species are considered. The results of the numerical analysis show that the intensity of plasma-particle heat exchange is greatly influenced by gas ionization, participation of electrons and ions in the transfer processes, particle charging, and screening properties of the plasma. Even at a low degree of ionization, the electron and ion contribution to the hear transfer remains significant.