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  1. #1
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    Dec 2018
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    4ton VS heat pump w/ 3 zones

    My boss installed system and designed duct work. Customer built a sun room onto the south end of the house and now wants heat. The closest register to that room is in the dining room. It's open floor between dining room and new sun room. Dining room has two registers supplying. Without disturbing the duct design otherwise, we are planning to pull closest register and add duct to bring it to the sun room. It wont be enough air but thats all we can get from that system w/ complete redesign.

    Any thoughts or comments?

  2. #2
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    Dec 2018
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    Thread Starter
    Sorry w/o complete redesign

  3. #3
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    Aug 2013
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    Visalia California 93291
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    Sun Room Needing Heat----What is the Heat Loss on that room and size----A simple Transfer Duct may work as heat will travel to the "colder Room"

  4. #4
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    Thread Starter
    There's four 6'0 3'0 windows , all triple pane low e. And a glass door. Room 16 x 12.

    So are you suggesting to "tap off" existing duct ? Or add a "pop over" duct from room to room?

  5. #5
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    Aug 2013
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    Visalia California 93291
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    Quote Originally Posted by DuskEnough View Post
    There's four 6'0 3'0 windows , all triple pane low e. And a glass door. Room 16 x 12.

    So are you suggesting to "tap off" existing duct ? Or add a "pop over" duct from room to room?
    Transfer Duct is just Room to Room - 192 Square should work fine

  6. #6
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    Thread Starter
    And you think that would adequately heat that room ?

    Let me get this straight "transfer duct" is not connected to existing duct work?

  7. #7
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    Aug 2013
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    Visalia California 93291
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    Quote Originally Posted by DuskEnough View Post
    And you think that would adequately heat that room ?

    Let me get this straight "transfer duct" is not connected to existing duct work?
    I don't know the heat loss to be accurate but 72 square foot on the south , you should have a decent solar load ..........Post the SHGC and U as well as your design conditions so we can get an idea

    And yes a Transfer Duct is Not Connected to Duct Work

    I higher SHGC will help you in the winter, hurt you in the summer---

  8. #8
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    Jan 2004
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    That sunroom probably won't ever be conditioned right if you just pull one supply from the other room. As it will have a much more diverse heat gain and loss than any other room on that zone..
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  9. #9
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    The Dining room has the closest register, does this mean the Sun room is added to one side of the Dining room? If so the Dining room will not need as much air.

  10. #10
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    Thread Starter
    The sun room is a room of it's own, however there's not a door so it is open to the dining room but not an addition.

    And yes, there will not be a sufficient amount of air from the one duct.

  11. #11
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    Thread Starter
    The sun room is a room of it's own, however there's not a door so it is open to the dining room but not an addition.

    And yes, there will not be a sufficient amount of air from the one duct. SO it won't be conditioned properly

  12. #12
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    Aug 2002
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    Southold, NY
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    Floor mount mini split

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