Automotive Air Conditioning Information Forum

I guess the question is, how is the cooling capacity with 47f air? Large volumes of 47f air can cool pretty well.

I would wonder if the TXV has a poor CV match for the Evaporator size, causing the low discharge pressure, but I have a sample size of one here. No like I can compare the system to another - like we would with a Suburban for instance.

Dgreen wrote: ↑Sun Jul 10, 2022 3:42 pm 14 on the low side, 225 on the high side, vent temp was 47.

How much hose/pipes between the evaporator and the port where you get this pressure? I saw TM31, suction line should probably be dash 16 sized hoses and maybe 7/8" or larger hard lines?

The system moves a lot of air and at 47 vent temp, it does a good job of keeping us cool.

Connections for the gauges are on the compressor. I would call it a long run of hose from there to the evaporator. It’s a cab over and the evaporator is mounted to the roof on the inside of the cab.

There you go then, big suction line pressure drop is how you get 14 psi at the compressor but evaporator running reasonable.

Thanks for helping me understand that!
Learn something every day!