Ford Repair: 2000 ford explorer eb w/70k miles, vacuum leak, eb

Question
lately have noticed that idle increases from abt 750 to 1200 after engine warms up. also noticed that it is running a little hot(between middle and H). these 2 issues related? any ideas? only recent repair work under the hood was  a/c recharge. thanks

Answer
possibly related??
check for vacuum leak can cause high idle
check for restricted radiator internal and external could cause o/heating
how far above middle slightly above middle with a/c on and a hot day may be normal
if in doubt have it checked out.