This is driving me nuts. I have changed everything. The whole system and still have this issue. The room is about 14'x20'x6'8". When seated in the sweat spot, all the highs seem to be comming from where the wall meets the ceiling. I insulated the joists behind the drop ceiling tiles and tried use Owen Corning 703 in more places than I can count. I you have ever seen this before, give me a clue.
I don't know about editing a posted question, but you can edit your response as long as it's the last response. As soon as someone else posts a response after yours, you can no longer edit yours.
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