The valve on the vent next to the a/c does not say winter or summer. Which way do I turn it (my old house had winter and summer written in the direction it needed to be turned)
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The valve on the vent next to the a/c does not say winter or summer. Which way do I turn it (my old house had winter and summer written in the direction it needed to be turned)
Is this a damper, or does it go to the humidifier?
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