A prosthetic limb heating apparatus for use with a prosthetic assembly includes a sleeve having a side wall that defines open upper and lower ends. The upper end is configured to receive an upper limb portion and prosthetic liner into the sleeve. The open lower end is configured to allow the upper limb portion to pass therethrough but not the prosthetic liner such that the prosthetic liner is nested in the interior area. An electrically conductive wire is situated on the sleeve and extends circuitously thereabout, the conductive wire having opposed first and second ends. A battery is coupled to the side wall of the sleeve and electrically connected to the first and second ends of the conductive wire so as to selectively energize the conductive wire. The conductive wire imparts heat to the prosthetic liner when the liner is nested within the sleeve and the conductive wire is energized.