[AT] Air conditioning problems In my parts getter...

[Cecil Bearden]

Dupont bought them off...

Cecil

On 6/12/2021 8:53 AM, Phil Auten wrote:
> What did the EPA decide was wrong with R134a?
>
> Phil in TX
>
> On 6/12/2021 12:18 AM, Steve W. wrote:
>> Brad Loomis wrote:
>>> I hope you meant a detector for the current refrigerants and not 
>>> NH3. Ammonia only requires your nose or a sulphur stick. And for 
>>> those that may want to try their hand at refrigeration, a lot of the 
>>> newer domestic/commercial units use either propane, R290 or 
>>> isobutane R600a, as refrigerant. I'm not sure what the automotive 
>>> industry is going to move to. I got out of commercial refrigeration 
>>> not long after the requirements to recover and the end of R12, R22, 
>>> R502, R11, and the rest of the chlorinated fluorocarbons.It was an 
>>> awful time never knowing what someone put into what system. Then 
>>> came 410a in A/C. Now that's going away. Customers didn't like to 
>>> hear, we don't use that refrigerant, we'll have to recover it, time 
>>> consuming, and charge your system with an EPA approved refrigerant, 
>>> maybe have to change the oil, etc, etc, equipment was slow so labor 
>>> costs were absurd. Like I said, ammonia is safe, easy, efficient, 
>>> and well,  dangerous in the wrong hands. :) And the bigger warning 
>>> would be to never pressure test any system with oxygen.  And by this 
>>> discussion it is apparent why automotive is the driving force for 
>>> EPA  to regulate what goes into the atmosphere. A billion leaking 
>>> autos is a lot of gas into the atmosphere. It just moved to HVAC and 
>>> refrigeration because of the same gasses.
>>>
>>> ------------------------------------------------------------------------ 
>>>
>>>
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>>
>>
>> Auto was R-12, then R134A and the new kid on the block is R1234yf The 
>> new stuff is $$$$$$$ and flammable. A couple companies are also 
>> playing with CO2 but the pressures in those make it unlikely they 
>> will end up being used anytime soon.
>>
>> A 10 pound cylinder runs close to $900.00 at the moment. 8 oz cans 
>> are about $50.00 a pop.
>>
>> If you are doing it as a business you need a lot of new toys for 
>> leaks, testing and repair which is why I'm in no rush. Still a 
>> majority of 134A vehicles around here. Not in a rush to spend big 
>> money for the new machine, detector and testing equipment and a quick 
>> skills update for the 609 crowd.
>>
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