1. A coil for a personal vaporizer for vaping by a user, the coil comprising:a. a cup having an interior volume, said interior volume being configured to receive a concentrate to be vaporized in the personal vaporizer, said cup defines an outside surface, said outside surface not being disposed within said cup interior volume, said cup is generally cylindrical and defines a cup base and a cup open top;
b. a heating element configured to heat said concentrate within said cup interior volume, said heating element not being disposed within said interior volume when said heating element is heating said liquid, said heating element is in direct contact with said cup outside surface when said heating element is heating said concentrate;
c. a housing, said housing defining a housing open top, a housing internal volume, and a housing bottom side within said housing internal volume, said housing internal volume being configured to receive said cup within said housing internal volume, said heating element being disposed between said cup base and said housing bottom side, said housing being configured to maintain said heating element in direct physical contact with said cup base;
d. a coil cap, said coil cap being selectably attachable to said housing, said coil cap being configured to cover said housing open top and said cup open top when said coil cap is attached to said housing, said coil cap defines an outlet hole and an inlet hole, said outlet and inlet holes communicating through said coil cap, said outlet hole being configured to allow a vapor from said heated concentrate to be pulled from the coil by a person inhaling through the personal vaporizer, said inlet hole being configured to allow a makeup air to enter the coil.