Why do i have to put freon in my jaguar xj6 every year? Freon made it work last year

What is your question?

The sound I hear is a squeaky sound when I start the car first thing in the morning. Even when I don't turn the air on. When I turn the air conditioner on this year it blows out hot air. I bought the car last year and when I put freon in it ...it worked! This year I only get hot air.

What makes this problem better or worse?

When I turn on the air conditioner it blows out hot air

How long has your 1997 Jaguar XJ6 had this problem?

I put freon in it last year and it worked. I bought the car last year. This year I need freeon again