How well does R-134a work in a retrofitted R-12 system?
On most vehicles the air coming out the vent will be the same. On some vehicles the R-134a air will be a couple of degrees colder. On some other vehicles (rear wheel drive domestic vehicles) the duct temperature may be 2-4 degrees warmer. This is considered an insignificant amount, and based on our experience selling over 20 million retrofit kits since 1996, users are extremely satisfied with the results.