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- 01:08, 10 March 2026 Xippushvxw talk contribs created page AC Lineset Vacuum and Nitrogen Purge: Why Both Are Crucial (Created page with "<html><p> A properly installed refrigerant line set should run leak‑free for a decade or more. Yet I still get weekly calls where a gorgeous new condensing unit is strangled by a contaminated or moisture-laden line set—microscopic acids chewing copper from the inside, TXVs freezing from ice-nucleated moisture, and compressors slugged by non-condensables. Pulling a deep vacuum and purging with nitrogen isn’t “extra credit.” It’s the difference between a system...")
