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Hopefully GE is still using 134a.
Sadly, the ban on R-12 I think was a plot to manipulate society, cause people to buy a "new" fridge, a new air conditioner, a new car, and part of a scam to condition society to believe the propaganda fed to them.
Now we've got that global warming crap shoved in our faces - another story built on fear and manipulation.
R-12 was the best cooling refrigerant designed.
 
Refrigerant industry changes have ZERO effect on whether I choose to buy a new refrigerator, A/C, or anything related. I purchase new items when replacement of the existing unit is justified on my need for it. I didn't research or ask what type of refrigerant was in the new heat pump in Jan 2022 or the refrigerator in Jul 2024. It was of no consequence to the decision.
 
Refrigerant industry changes have ZERO effect on whether I choose to buy a new refrigerator, A/C, or anything related. I purchase new items when replacement of the existing unit is justified on my need for it. I didn't research or ask what type of refrigerant was in the new heat pump in Jan 2022 or the refrigerator in Jul 2024. It was of no consequence to the decision.

Until you have to add refrigerant or need to replace any component of the sealed system.
 
Amount of refrigerant in home refrigerators

Has nothing to do with whether it has a rear mounted condenser or one underneath or in the cabinet for that matter.

Brands that had rotary compressors like whirlpool and Frigidaire had a lot more R12 in them, they typically had anywhere from 13 to 19 ounces.

I have a 1961 Westinghouse refrigerator for example with a rear mounted condenser that only has 4 ounces of R 12 in it Westinghouse tended to use less refrigerant than many other brands. It has a piston compressor.

Hi Matt, what is the model number of your GE refrigerator you were saying for a while it was in 1987. Now you’re saying 85 that model would be right on the border of having a rotary compressor or not I’d be curious to know which one you have.

John L
 
Amount of refrigerant in home refrigerators

Has nothing to do with whether it has a rear mounted condenser or one underneath or in the cabinet for that matter.

Brands that had rotary compressors like whirlpool and Frigidaire had a lot more R12 in them, they typically had anywhere from 13 to 19 ounces.

I have a 1961 Westinghouse refrigerator for example with a rear mounted condenser that only has 4 ounces of R 12 in it Westinghouse tended to use less refrigerant than many other brands. It has a piston compressor.

Hi Matt, what is the model number of your GE refrigerator you were saying for a while it was in 1987. Now you’re saying 85 that model would be right on the border of having a rotary compressor or not I’d be curious to know which one you have.

John L
I'm not so concerned about "dates", however the manual that I have in my hand right now is a model TBX18ZLS
The label inside the freezer door says TBX18Z
Another number above the "specifications listing" is 203C2570P003
And the document's page is dated 12/89
 
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R12 was used in refrigerators and home ACs way back when. R502 was used in commercial refrigeration. Two exceptionally superior refrigerants.
I don't recall R12 in home A/Cs, but I certainly haven't seen them all... Sears put out a window unit with a cylindrical evaporator and condenser that sounded like a leaf blower. I can't imagine that in a bedroom! I have a vintage Universal upright freezer that I can't figure out what should have in it. The only marking is R22 stenciled on an air deflector by the condenser, but there's no mention of refrigerant type or quantity on the rating plate. I would have expected R12, but... I was utterly without success finding a word about it online.
 
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