Just finished with installing some some Heatshield Products wrap and sleeve. Good quality and easy install. Looks like it lowered IAT temps about 10 degrees per my PHP Edge programmer. A/C comes in faster and colder now. The sleeve is super easy, just Velcro it on. Tape is self-adhesive, just layer it on.

10' of the ThermaflectSleeve does the A/C lines, and 25' of thermaflect tape does the intake. Doing exhaust wrap later, with fuel rail sleeves.

http://www.summitracing.com/parts/hsp-340250/overview/

http://www.summitracing.com/parts/hsp-351004

http://www.summitracing.com/parts/hsp-307024

http://www.summitracing.com/parts/hsp-274113

 

Looks great.

Someone please correct me if I'm wrong, but I think you only need to insulate the high pressure line of your A/C. The low pressure line is the hot or heated gas returning to the compressor.
I had this problem with my Toyota, the A/C would take 10 to 20 minutes before it started blowing cold on days when it was REALLY hot. The fix I read about (and it worked) involved using 3/4" pipe insulation around the high pressure A/C line. The A/C in that car gets freezer cold in under a minute now, even when the car has been sitting out in 110* sun all day.

 

The whole purpose of the AC is to remove heat from inside. The cold pipe is high pressure going into the cab. But returning line can and will pick up heat from the engine bay before it goes into the compressor where it will build more heat. Compression always develops heat. Then into the condenser to cool the refrigerant before going back into the truck.

I did both my lines going through the engine bay. Noticed about 2* cooler on a 100* day

 

Did the intake tube insulation make the intake noise quieter?

 

Just sharing my 2 cents...and it's usually worth every penny.
Here's my thought on it: The return line will trap more heat being inside insulation than it will pick up from ambient "hot engine air". You only ever want to insulate something hot to keep it hot, you want to provide more surface area aka "heat sink" something hot to make it cooler.
Like I said, this is just my 2 cents.

 

Wrapping the low side would prevent the refrigerant from absorbing heat from the engine compartment. This would lower the amount of heat the condenser would have to remove. Wrapping the high side wouldn't do very much as for function. But it might help the liquid refrigerant from absorbing heat before the metering device.

 

So, I did end up taking the Sleeve off the high pressure side, so it wasn't a "blanket" to the hot line. I left the thermowrap sleeve over the factory line cover near the exhaust manifold to help with blocking heat. Although, the heat sink idea may work better on the top area.