We present data on the heavy fermion compound CeAl3 as a potential p-type thermoelectric material at cryogenic temperatures. Samples of CeAl3 were synthesized by arc-melting, ball milling and hot pressing the nano-powder at different temperatures. Thermal conductivity (kappa), Seebeck coefficient (S), electrical resistivity (rho) and Hall coefficient (R-H) of the samples were measured at temperatures ranging from 5 to 330 K. The thermoelectric properties of this compound are highly dependent on the hot-pressing (HP) temperature. The thermal conductivity increases with increase in HP temperature which is compensated by increased power factor (S-2 rho(-1)). As a result the samples with higher HP temperatures exhibit higher ZT values. The highest if value of 0.016 at 55 K was observed for the sample hot-pressed at 800 degrees C. The Hall coefficient data reflects an increase in carrier concentration and a decrease in carrier mobility with decreasing hot pressing temperature. (C) 2014 Elsevier Ltd. All rights reserved.