Monovalent silver-doped Pr0.6Sr0.4-xAgxMnO3 manganite has been chosen for the electrical and thermal transport studies. The electrical measurements confirmed a metal-insulator transition around room temperature. For the analysis of the resistivity data, in the high-temperature paramagnetic region, the adiabatic small polaron hopping model was operative. The magnetoresistance studies, under different external magnetic field, showed that the MR peak is located at the metal-insulator transition and ferromagnetic-paramagnetic transition, which is characteristic for an intrinsic magnetoresistance. The thermal conductivity results exhibit a semicrystalline character with grain boundary scattering as a main mechanism limiting the heat transfer in samples. The electrical contribution to the thermal conductivity is relatively small, around 1%, as in most of the manganites. The transition point around room temperature is also visible. The additionally calculated thermal diffusivity parameter shows values of the order typically found in perovskites.