If I get some of that aluminum look insulator wrap, and if I wrap my A/C lines, would this help keep it cool from engine bay heat? Its pretty important that I have cold A/C, I live in AZ, and its over 100 everyday this time of year. Thanks for any input, its appreciated.

 

I don't know it will help much or at all ??? Beacause the work is really done by the Condensor and Evaporator.

Mostly is the Condensor that exchanges your hot/warm air into cooler air that is being circulated through the Evaporator.

 

no because the high pressure side is always hot. the low pressure side should be insulated where the expansion valve/h block is into the firewall

 

That wont be of any help at all. The temperature of the suction line (The cold one.) has no affect on a/c performance. It is only carrying the gaseous freon back to the compresor to be to be heated so that the condenser can cool it back to a liquid state.