A melt system capable of heating hot melt pellets into a liquid includes a melter including a body, a chamber, a collector, channels, and a heater. The thermally conductive body forms an interior with a surface area. The chamber is at an upper end of the body for receiving the pellets. The collector is within the body and located below the chamber for receiving the liquid from the melted pellets. The channels extend between the chamber and the collector to increase the surface area of the interior, and the walls of the channels form heat exchange surfaces. The heater is for transferring heat to the body.