Most refrigeration components just come with a slight nitrogen charge to keep them dry. If you’re buying a whole condensing unit it’ll often come with a refrigerant charge in the condensing unit. With heatpumps in particular though you can buy lines and components precharged with refrigerant so you can install them without an EPA certification.
Some come with lines that are vacuumed or something out of the box. Aren’t most compressors pre charged?
Most refrigeration components just come with a slight nitrogen charge to keep them dry. If you’re buying a whole condensing unit it’ll often come with a refrigerant charge in the condensing unit. With heatpumps in particular though you can buy lines and components precharged with refrigerant so you can install them without an EPA certification.