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Auto vents in a attic

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Heat65
Heat65 Member Posts: 10
Looking for suggestions of what auto vent to use for a return line in a attic 1 1/4 that can be piped down into the living space?

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  • JUGHNE
    JUGHNE Member Posts: 11,108
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    Don't know about an auto vent, however I did tap a line in an attic and use 1/4" copper down to main floor. As luck would have it it is above a mop sink so easy to bleed. Added a Schrader valve on the bottom end.

    In this case once and done after refilling system.
    This system has an "old school" compression tank and auto vent is not wanted.
    Heat65
  • pecmsg
    pecmsg Member Posts: 4,961
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    Heat65 said:

    Looking for suggestions of what auto vent to use for a return line in a attic 1 1/4 that can be piped down into the living space?

    Does this attic get below freezing?