Abstract: A heating unit consisting of a mixture and blend of a built in means including organic, inorganic materials, and fuels compressed into a generally stable solid, which, due to built in expanding force means, such as vermiculite ore embodies the function of the non-existant conventional liquid fuel container and heater for burning fuel with a regulated intensity rate and length of burn; the heating unit slowly self-destructs its mass, and by this burn method so alters or changes the left over or spent material, at least in part, as to cause it to become a useful fertilizer, said conditioner and plant nutrient. The organic materials may consist of paper, wood, organic muck, peat, and the like. The inorganic material may consist of phosphate, phosphate clay, limestone, dolomite, calcium, magnesium, sodium and the ore of the non-metallic mineral vermiculite, and the like. The fuel may be a liquid or solid hydro-carbons.