[AT] R134a

[bloomis at charter.net]

I'm talking brand new commercial refrigeration equipment all with POE oil and 134a. Unlike R12, if a condenser got a little dirty you'd have a burnout. I can't tell you how many dozens I replaced both under and out of warranty in the mid to late 90s. Autos seem to have improved a bit, tho the wife's Subaru on a hot day will show the heavy load drop like most do.  Like all things, YMMV. 404 was actually a decent replacement for 502, other than being a blend and concerns that brings with recharging after a leak. Pretty efficient and not the troubles of 134. 

-----Original Message-----
From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of Steve Offiler
Sent: Saturday, January 12, 2019 3:12 PM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: Re: [AT] R134a

R134a is crap?  Really?  My ‘97 F250 had an R134a system that would still make icicles in the cab when I sold it 19 years later.  Zero work ever done on that system.  2003 Focus, system worked fine when sold in 2014.  Zero work on it.   Wife’s ‘01 Honda CR-V, 210,000 miles, ditto. Blew cold air until the day we sold it, never worked on.   

Now, i would not be surprised to learn that the conversions from R12 were somehow lacking, if that’s what you mean.  

SO

Sent from my iPhone

> On Jan 12, 2019, at 2:46 PM, <bloomis at charter.net> <bloomis at charter.net> wrote:
> 
> In the early 90s. Part of the reason I left the commercial 
> refrigeration trade. The transition from fluorocarbons to all the 
> alphabet soup of refrigerants today was a real pain. Went to Ammonia 
> refrigeration. Much easier. I still have a 30# of R-12. Well I guess 
> it's a 29.5 since I recharged my daughter's Saab long ago. 134a is 
> crap. Contractors made a lot of money replacing compressors. Auto A/C 
> worked way worse. But autos were the chief culprit of refrigerant into 
> the atmosphere. Not the ice machine with 1000lb charges, but the how ever many hundred million leaky autos.
> Bradford
> 
> -----Original Message-----
> From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of James 
> Peck
> Sent: Saturday, January 12, 2019 11:08 AM
> To: 'at at lists.antique-tractor.com' <at at lists.antique-tractor.com>
> Subject: [AT] R134a
> 
> Is R134a the refrigerant currently used in the air conditioning of ag 
> equipment. When was R12 fhased out.
> 
> https://www.natex.org/site/391/Careers-Learning/The-NATE-Magazine
> 
> https://harryferguson.blogspot.com
> 
> 
> 
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