Failed AC Dual-Run Capacitor Replacement on Dunn Ave in Northside
Street: Dunn Ave, Northside
The Problem: The homeowner reported the indoor fan was blowing warm air, while the outdoor compressor unit was hummed loudly but the fan did not spin. This occurred during a week of consecutive 95°F days.
Diagnostic Assessment: Our technician inspected the outdoor condenser cabinet and verified that the dual-run capacitor had bloated and leaked oil. Microfarad readings were down to 0 µF on both the compressor (HERM) and fan motor terminals.
Resolution: We replaced the failed capacitor with a premium heavy-duty 45/5 µF rated OEM replacement. Additionally, we cleaned the electrical contacts on the contactor switch, tested the compressor's starting amperage draw, and chemically washed the condenser coils to optimize heat rejection.


