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• 06:42, 2 October 2026 Logiusohsz talk contribs created page Copper Line Set Applications Beyond Air Conditioning 26886 (Created page with "<html><p> The vacuum gauge wouldn’t pull below 1,200 microns.</p> <p> Not 900. Not 700. Not even close.</p> <p> By 2:14 p.m., the mechanical room was 96°F, the building owner was standing in the doorway, and the refrigeration tech had already cut out two suspect flare joints. The leak detector stayed quiet. The nitrogen test held for 20 minutes. Then the pressure slipped just enough to make everyone stare at the <strong> copper line set</strong> running behind the wal...")