The Calcanna solvent-less extraction system is patent pending extraction technology using thermal energy to selectively target and efficiently recover key phytochemicals from biomass. It is one of the most efficient, solvent less extraction systems for the selective or bulk extraction of of phytochemicals in the essential oils and cannabis extraction industries. It is capable of targeting and extracting cannabinoids (THC, THCa, CBD, CBDa, CBG, CGBa, CBN, CBNa, THCV, THCVa, terpenes, flavonoids), lavender, peppermint, spearmint, tea tree, patchouli, eucalyptus, and citrus. The Calcanna solvent-less extraction system is unique such that it can be utilized in crop drying to mitigate crop loss risk and the large footprint and filtration equipment associated with drying harvested biomass without decarboxylation. Drying times can be reduced from 5-10 days to 1 day or less.