Do I need to have the system evacuated before removal?

Yes. The AC system holds pressurized refrigerant — have it evacuated by a certified technician before you pull the old condenser. Reinstall with the new condenser and have the system charged back to spec.

What fasteners come with this?

Condenser assembly only. Use your existing mounting hardware or purchase OEM fasteners separately if needed — test-fit the unit first to confirm what you have is reusable.

Will this work if my original condenser is partially clogged?

This is a brand-new unit, so it starts clean. If your system had a clog or contamination, flush the lines and expansion valve before installing to avoid repeating the problem.