See capacitor replacement guide and capacitor failure symptoms.
Your RV AC capacitor has failed and you need a replacement. Match the old capacitor's µF and voltage exactly. Common dual-run capacitors are 40+5 µF, 370V. The reader should feel instantly understood.
| AC Model | Typical Capacitor |
|---|---|
| Dometic 13.5K / 15K | 40+5 µF, 370V dual-run |
| Coleman Mach | 40+5 µF, 370V dual-run |
| Atwood | Check unit label |
RV AC Capacitor Replacement Guide · Capacitor Failure Symptoms · RV AC Not Cooling · RV HVAC Hub
Match old capacitor exactly—µF and voltage. Common: 40+5 µF, 370V dual-run. Check unit label.
If you're diagnosing RV electrical or appliance problems, these guides may help:
RV AC Troubleshooting Flowchart | RV Air Conditioner Upgrade | RV Mini Split Air Conditioner | RV Mini Split Installation | Best Mini Split for RV | RV Mini Split Solar Power | Rooftop AC vs Mini Split | RV AC Not Cooling | RV AC Running But Not Cooling Enough | RV AC Airflow Problems | RV AC Hard Start Capacitor Guide | When to Replace RV AC vs Mini Split | RV AC Compressor Failure Symptoms | RV AC Freezing Up | RV AC Short Cycling | RV AC Leaking Water | RV AC Fan Running But No Cold Air | RV AC Compressor Not Starting | RV AC Capacitor Failure | RV AC Capacitor Replacement | How To Test RV AC Capacitor | How To Test RV AC Voltage at Unit | How To Clean RV AC Evaporator Coils
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Last updated: March 2026 · Reviewed for technical accuracy