Even a high-quality split AC can underperform if it’s installed with basic errors. In Fontana, where systems often run hard during hot months, three mistakes cause most callbacks: condensate drainage, the refrigerant line set (the “route/track”), and vacuuming before releasing refrigerant. 1) Drainage (condensate). The indoor unit must drain water with a steady slope. A sagging hose, incorrect elevation, or poor insulation can lead to dripping indoors, moldy odors, and gurgling sounds. Avoid long horizontal runs without pitch, secure the drain to prevent kinks, and consider a trap only when required by the manufacturer. Always test by pouring water into the drain pan and confirming fast, leak-free flow outside. 2) Line set routing (“трасса”). Too many bends, crushed copper, or improper flare connections can cause vibration, noise, and slow loss of refrigerant. Lines should be sized correctly, protected from UV, and insulated end-to-end to prevent condensation and energy loss. Keep routing neat, minimize unnecessary length, and use proper torque on flare nuts to prevent micro-leaks. 3) Vacuuming (вакуумирование). Skipping a deep vacuum or using the “purge” method leaves air and moisture inside the circuit. This can form acids, damage the compressor, and reduce cooling capacity. Proper installation means pulling a stable deep vacuum with a good pump and micron gauge, confirming it holds, then opening the service valves. Choosing an experienced HVAC installer and insisting on these steps protects efficiency, comfort, and warranty coverage.
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