Federal Law does not allow the use of Freon, or ammonia, as a coolant gas any more. Everything (that I know of) uses R-134 gas for coolant in all cooling systems in the US. This gas can be a R-134 or R134a gas, depending on its use - car, appliance, etc. (Please feel free to add, or correct, if it will help the question, or correct any error I have made.)
6 years, 5 months ago
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FloridaSandman