Thread: HVAC Refrigerant
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Richard J Kinch Richard J Kinch is offline
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Default HVAC Refrigerant
Junior Brown writes:

What type of AC refrigerant might be used in a 30yr old (GE brand)
residential system? R22..R12?

Almost certainly R-22.

Do newer systems use R134?

No, not your typical split system. Still R-22 or (ugh) Puron.
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