No air, hot or cold will blow out of my vents in my Jeep.

Hello, sounds like a blower motor issue - this will need some troubleshooting. The temperature and climate control system can influence when the fan comes on and at what speed, depending on what system you have in your vehicle. Is it "automatic temperature control"? Further, the blower motor has a resistor that regulates selected speed, and has circuit protection with a fuse. The motor and wiring could be suspect as well. Hands on testing is needed. If you're not equipped with needed skill and tools, then reach out too a shop near you. https://repairpal.com/auto-repair-near-me