2002 Camry AC pipeline heat insulation

I recently noticed that on my wife's 02 Camry the AC low pressure line
has no foam pipe insulation, in the section by the firewall, about 10
inches long. That bare section directly exposes to engine bay heat.
But the rest of the pipeline has been wrapped with insulation. The
bare section transmits heat to evaporator inside the cabin easier.
This for sure reduces the AC efficiency. But the one on my 86 Celica
is wrapped all the way. Is this a cost cutting or there is a reason? I
know this may be a small reduction of the efficiency but I am curious.
TIA.

John

the low pressure line ( the bigger line) is traveling towards the
compressor not the other way around. so this cold line the gas is not
going inside the car t is going to the compressor. ask any ac man and
they will tell you the same thing. the cold 134a gas has already been
inside the car to cool it and is starting another cycle back to the
compressor.

Even so, wouldn't keeping engine heat away from it by using insulation help?

"Dave Ddd" <daveddd@> wrote in message
news:2575-40F9DF1F-18@storefull-3174.bay....
> the low pressure line ( the bigger line) is traveling towards the
> compressor not the other way around. so this cold line the gas is not
> going inside the car t is going to the compressor. ask any ac man and
> they will tell you the same thing. the cold 134a gas has already been
> inside the car to cool it and is starting another cycle back to the
> compressor.
>