AC temps?

[77c10]

Fellas,

Just got my Vinatage Air set up charged. I was wondering what temperature that you all are getting at your vent? Mine is right at 40 degrees. Just checking to see if that's normal.

[Titomars]

That really depends on the outside ambient temp. Also humidity can make a difference.
If it's 45 deg outside that's not so good. If it's 100 deg outside that's awesome.
Back in my days as an A/C electrical tech (pre R-134a) the rule of thumb was a 20 to 25 deg difference. I have seen some systems pull down to about 35 deg difference. But that was fairly rare.

[77c10]

This was yesterday setting in my garage. It was probably 80 or so, not sure what the humidity was.

[tucsonjwt]

I have been reading elsewhere the the Vintage A/C systems don't get super cold. I have always read that 40 degrees was the minimum temp at the outlets. At my last recharge the A/C tech said I had 40 degrees at the outlets, but that is with a 134A conversion old A6 compressor and no supplemental fan for the condenser.

Did you install electric fans with your new system? I find that supplemental fans over the condenser do lower the temperature a lot.

[77c10]

Originally Posted by tucsonjwt

I have been reading elsewhere the the Vintage A/C systems don't get super cold. I have always read that 40 degrees was the minimum temp at the outlets. At my last recharge the A/C tech said I had 40 degrees at the outlets, but that is with a 134A conversion old A6 compressor and no supplemental fan for the condenser.

Did you install electric fans with your new system? I find that supplemental fans over the condenser do lower the temperature a lot.

I'm very happy with 40 degrees. It beats the heck out of what I had before that which was nothing!

I am running two electric fans instead of a mechanical fan. I never thought of running one in front of the condeser. I may look in to that.

[Titomars]

Originally Posted by tucsonjwt

I have been reading elsewhere the the Vintage A/C systems don't get super cold. I have always read that 40 degrees was the minimum temp at the outlets. At my last recharge the A/C tech said I had 40 degrees at the outlets, but that is with a 134A conversion old A6 compressor and no supplemental fan for the condenser.

Did you install electric fans with your new system? I find that supplemental fans over the condenser do lower the temperature a lot.

In Las Vegas when it is 115 out (typical summer day temp) there is no automotive A/C system the will get to 40 deg out the register. You can count yourself lucky if you get 80 deg. The near zero humidity does not help either. that's with either R-12, R-22, and R-500. R-143a in my experience does not cool as well as R-12.

[homemade87]

The one thing that can improve on the 134 is use a true parallel flow condenser . The reg tube type condensers that come in the trucks just don't do a good job of getting the heat out of the 134 . Mine does pretty good with the stock condenser . If for any reason I have to pull mine apart I will replace my condenser with the true parallel .

[tucsonjwt]

I agree that the stock condenser will hinder the performance of the stock system. I will go to a cross flow condenser the next time it needs service. I used my Craftsman mini infrared thermometer about 1" away from the center vent and the pic shows what I got (probably not accurate.) It's about 100 degrees today but only about 10% humidity. I think more humidity makes the a/c work harder and results in less effective cooling - at least you don't feel as cool.