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An RV AC heat pump designed for R-22 cannot directly use R-134a, as these refrigerants have different properties and operating requirements. R-22 and R-134a require different types of lubricants and have distinct pressure ranges, which means components like compressors and expansion valves may not function properly if mismatched. Converting a system from R-22 to R-134a typically involves replacing major components to ensure compatibility and efficiency. It is advisable to consult a professional HVAC technician for such conversions.

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3mo ago

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