My 2001 Ford Expedition only blows hot air. Even with the A/C on, still just hot. What could be the problem?

My 2001 Ford Expedition only blows hot air. Even with the A/C on, still just hot. What could be the problem?

Sounds like you need to recharge your A/C unit, most garages do it.

The A/C fluid has leaked out. Or the A/C compressor doesn't run.