05 f250 6.0l 162000miles last summer it blew super cold air now its been bout 85 degrees out so i rolled windows up turned on ac and it was hotter than hell, so i got home put truck in park and turned ac on and off trying to hear the compressor and i cant hear it kickn on so im thinkn its a fuse but im not sure which fuse since i dont have an owners manual any insight would b great thanks.

 

Check the connector on the compressor first. It is vulnerable to corrosion and could be a cheap fix. Then check fuses ! Start with the basics