• grue@lemmy.world
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    4 months ago

    I want a how-to video on adding a reversing valve and control electronics to my existing HVAC.

    • slazer2au@lemmy.world
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      4 months ago

      Wouldn’t that require draining the system of refrigerant thus requiring a certified person?

      • Cort@lemmy.world
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        4 months ago

        Generally. They’re not add on devices. Would be cool if manufacturers had an incentive to make one but there’re too many models out there to make something universal. It would probably be custom if you could even do it at all