We do offer replacement lava granules that can be used with any vent free appliance. However, the embers are specific to vent free appliances and must be formulated to not release harmful emissions. The granules that can be used are the Real Fyre Lava-Fyre Granules - LF-10
. The embers for the set should be obtained directly from the manufacturer, as they will be able to supply the proper type and quantity of embers.