Mumbai sits on the Konkan coast; summer wet-bulb temperatures often hover near 29°C, forcing ACs to run both compressor and fan at maximum load. Persistent salt-laden air accelerates coil corrosion, shortening system life by 18–22% if left unchecked.

• Clogged filters → 10–15% extra power draw within 30 days of dust build-up
• Low refrigerant from micro-leaks → 25% drop in capacity and risk of ice-ups on evaporator coils
• Ignored drainage lines → indoor water damage (₹15,000+ ceiling repairs on average) and mold proliferation within 48 hours of seepage

1. Measure line voltage & current, verify earthing before each service visit
2. Remove & wet-wash filters every two weeks during June–Sept to tackle airborne soot
3. Brush and vacuum outdoor condenser fins; spray with non-acid coil cleaner monthly
4. Inspect fan blades for salt-pit corrosion; lubricate bearings on units older than 5 years
5. Replace damaged suction-pipe insulation to prevent sweating and energy loss
6. Perform soap-bubble leak test; top-up only after fixing leak sites
7. Ensure all service valves are re-capped; coastal winds loosen caps over time
8. Calibrate thermostat; target 24–26°C in "Dry Mode" for rainy months
9. Tighten wiring and test capacitors (weak start capacitor is #1 Mumbai breakdown cause)
10. Re-check voltage & current post-service; record readings to track efficiency drift

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