The 1lb closed loop hydrocarbon extraction system performs botanical extraction within a sealed, vacuumed system. Utilizing a top-fill input, solvent washes thru the material column, collecting oils as it passes over the material. Oil bearing solvent is collected in the collection base under the material column. Once collected, solvent is distilled and recovered, leaving the oils in the collection base. This is a passive unit that utilizes pressure differences created by manipulating temperature to move solvent.