Inhalation of vapor: Inhaling a large amount of R134a vapor can lead to drowsiness, temporary nervous system depression, and lethargy. Besides, R134a refrigerant was manufactured after R12 was banned to help reduce the harshness of the old chemical (R12) on the ozone layer. Even though their common major function is to cool the system, they have many differences. In addition, there is a $10,000 rat-out fee your neighbor can collect if youre venting refrigerant and he tattles on you. We say generally because the vehicle manufacturer may have a formula already worked out for the R134a conversion process. R12 R22 R134a R404a Manifold Gauge Set 3" Gauge HVAC A/C Refrigeration This would become an expensive investment for a repair or service station to have unique dedicated equipment for every type of alternative refrigerant. We, the Rxmechanic team, have presented a well-detailed comparison of R134a vs. R12. Condensers designed to release greater amounts of heat help to expel the greater amount of heat which R134a removes from the cars interior. The best replacement for R134a is R1234yf, while R12 refrigerant replacement was R134a. In addition to it having a low ODP, science has proven that R22 is also a strong greenhouse gas and has a GWP of 1810, indicating that its 1810 times more powerful than carbon dioxide in contributing to global warming. This can significantly affect energy consumption as the plant will operate for longer, or a larger plant will have to be installed. Stay home and grill your own steaks and stir your own martini. This means that when using R134a, the compressor should be oiled with Polyalkylene Glycol or PAG oil. By international agreement in 1987 (the Montreal Protocol), the use and production of CFCs such as R12 began to be phased out, with automobile manufacturers required to stop using it by the end of the 1994 model year. If youre going to go to all that effort on a vintage car with an A/C system that hasnt been used in years, it usually behooves you do a full-on rejuvenation of the system and replace the compressor with a new compact rotary-style unit, replace the condenser with the largest parallel-flow condenser and big fan thatll fit in the nose of the car, make all new hoses, and flush the evaporator. With R12 you use to check to see if the site glass was full, if it had bubbles it meant you had a low charge.
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