AC Compressor or Condensor?

Hello all,

I hope this helps me figure out what I need to do with my AC/Heat. My van is filled with children and this summer I need AC Badly!

I was told a while back that either my compressor or condensor was bad. If anyone knows the difference?

The problem: AC no longer blows cold air (no leaks and filled with 134 already) AND sometimes the heat doesn't blow out heat. Still blows air out just not cold or heat.

Thanks!!!