I was talking to my buddy today about how hot it's been and that I wish my A/C would blow colder (nothing wrong with it, my windows aren't tinted yet and it's been hitting 102*) and he mentioned that he insulating his low pressure (cold) A/C lines with really good results. He used an aluminum backed insulating tape that's normally used on industrial HVAC duct work. Since the lines are aluminum I wouldn't think corrosion would be an issue. He said it's blowing noticeably colder now. I'm going to check it out this weekend if I can.

So, any thoughts about this?

 

I have never heard of this before so I cant really tell ya anything about it, sorry bud. But I am pretty interested in it... Let us know how it goes, and if you get an improvement or not!!

 

Insulating the low pressure line(suction) wouldn't have any noticable effect on vent temps in automotive a/c. Insulating this line on systems with electrically driven compressors is done to internally cool the compressor motor.
Belt driven compressors don't need a cold gas return,and insulating the suction line could actually be creating an early compressor failure,by returning refrigerant in liquid form to the compressor(which is a vapor pump)and washing oil out.
Here's a list of things that can help keep the air cold:
Make sure the condenser coil and radiator are clean and flowing air.
Check the fan clutch....If it cools good at highway speeds and warms up at low speed or at stop lights,clutch isn't engaging.
With truck in park,engine @curb idle,a/c set to max and on recirc,the low pressure line should sweat up to the point of entry @compressor,if it doesn't? Nurmerous possibilities,but a low charge would be 1st to consider.
Check the center vent temp.Most all will deliver 42 to 45 degrees when operating correctly.My 97' will push 38 at 105 at idle. Need help,I'll walk you thru it.

 

Thanks for the info Only1. Mine sweats up to the compressor, it does cool a little better while driving. I think my main thing is my windows have no tint to them at all, which is actually being fixed right now with 5% on the back and 35% on the front Lol.

 

Yep,the window tint helps,ALOT. If by chance your a/c isn't set to recirc,the outside air being drawn in kills the cold......Love Texas,the heat no so much anymore!