Does anyone use propane in their A/C system? I'm thinking about trying it.

 

There is a long thread that recently went over this. I will look for it but try to use the search and you should be able to find it.

 

Found it.

Anyone Running Propane

 

Thanks Andy, I did search but only came up with people using it as fuel.

 

When you search use the advanced search and then use the Google search bar. Put in as many keywords as you think will be in a single post and you will get a very concise search.

 

I was using the search to look through thread topics. I thought that was the best way. I thought that if I search through posts, the keywords would be scattered through different posts, instead of just one.

 

Try this.

Pick any post that has a lot of words and see if you can find 4 that are seldom used in the same post.

Then use the advanced search function and use the embedded Google search bar and type in those 4 words. You will be surprised how well the search works.

 

That does work, good! Thanks Andy, google search is so much faster.

 

I have lost my connection to it; but, there is a discussion site that is dedicated to automotive A/C somewhere out there.

When I was researching an A/C problem we were having on some vehicle or other, I ran into and read a number of articles on using Propane as a refrigerant.

Those that had switched over were well pleased with how much cooler their A/C was.

One other point I remember is that, although we are inclined to think of Propane as a dangerous flammable, R-12 and R-134a are equally so, if not more so, especially when pressurized as in an A/C system.

I know absolutely nothing about this, I am just relating what I read.

 

Thanks for the reply. I've moved forward and am interested in finding the low+high psi now. Currently, I'm at 32/205psi outside temp 75* vent temps 60*

Do I add or remove?

 

So is propane more dangerous?

 

From what I have learned...
Auto ignition of propane ~1635°F is ACTUALLY a higher auto ignition than R134a which is 1328°F
There is at least 50% less propane in a charged system than r134a, and 70% less than R12.
MPGs have improved as the compressor is less straining. Helps keep engine temps down, as well.
R134a and r12 will leak out before propane, as propane is a larger molecule. If it does leak out, it gives off an odor like rotten eggs.

edit: vent temps are down in the 40s*f and I don't notice the engine lag like I did with 134a. I still think I have a low charge as the temp should be 10-15 degrees lower than 134a.