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Thread: outside heating/cooling unit

  1. #1
    DIY Junior Member handy_wo_man's Avatar
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    Jan 2011
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    West Virginia
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    9

    Default outside heating/cooling unit

    Please help. with no response to my last thread could someone please explain to me where my main air duct should be placed at with two main ducts running (one on each side of mobile home) and a crossover on each end. (should i install another cross-over in the center for the main air duct?)

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Sep 2004
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    New England
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    21,446

    Default

    It'a kind of hard without being there and seeing it, or having a diagram. If it is not done properly, you won't get good airflow in each room. The ducts need the proper sizes and deflectors based on the room size and heating/cooling needs. WV climate ranges from quite hot and humid to moderate in the mountains, so there's no easy way without more info to know what your loads and needs really are. It doesn't sound like what's there is particularly efficient. Often, the best way is one central trunk with branches off of it where the main trunk gets smaller as it reaches the end. This often can provide the most even airflow, but not knowing the sizes, distances, etc...it's all a guess. You want something better than a guess. Post a drawing of what you have with some dimensions, and you'll have a better chance. But, keep in mind, a designer gets paid a fair amount to actually crunch the numbers and do this right. That may limit how good an answer you get here for free, but you never know.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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