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why r-22 is used in window ac ? and not r-134 ?

In window ac why r-22 is used ? can we make a window ac with r-134 ?

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  • 8 years ago
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    R22 is now banned (in Montreal Protocol signature countries) for new equipment

    R134 is used in cars etc, would also work anywhere etc, just needs slight re-engineering from R22 - seals, oil, pressures etc.

    Other refrigerants exist, including propane and ammonia

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