The Dometic 3313107.027 is a genuine OEM dual run capacitor designed for Dometic rooftop air conditioner units. This 30/5 MFD capacitor provides the electrical boost needed to start and run both the compressor and fan motor in your RV's AC system. If your air conditioner won't start, runs intermittently, or the compressor hums without starting, a failed capacitor is often the culprit—and this is the exact replacement part you need.
Key Features
- Dual Capacitance Rating: 30 MFD for compressor, 5 MFD for fan motor—handles both components with one capacitor
- Genuine Dometic OEM Part: Factory-spec replacement ensures proper fit and reliable performance
- Direct Replacement: Designed specifically for Dometic rooftop air conditioner units
- Heavy-Duty Construction: Built to withstand the heat and vibration of rooftop AC operation
- Easy Installation: Standard terminal configuration for straightforward replacement
- Critical AC Component: Essential for proper compressor and fan motor operation
Technical Specifications
| Part Number | 3313107.027 |
| Capacitance Rating | 30/5 MFD (Dual) |
| Compressor Capacitance | 30 MFD |
| Fan Motor Capacitance | 5 MFD |
| Application | Dometic Rooftop Air Conditioner Units |
| Component Type | Dual Run Capacitor |
| OEM Part | Yes - Genuine Dometic |
Frequently Asked Questions
How do I know if my AC capacitor has failed?
Common signs include: AC won't start at all, compressor hums but doesn't run, AC runs briefly then shuts off, fan runs but compressor doesn't engage, or visible bulging/leaking from the old capacitor. If your AC worked fine then suddenly stopped, the capacitor is a prime suspect.
Can I use a different MFD rating capacitor?
No—always use the exact MFD rating specified for your unit. Using incorrect capacitance can cause compressor damage, reduced cooling efficiency, or complete AC failure. The 30/5 MFD rating is engineered specifically for your Dometic unit's electrical requirements.
Is this capacitor difficult to replace?
Most RV owners with basic electrical knowledge can replace a capacitor, but you must discharge the old capacitor safely before removal and turn off all power to the unit. The capacitor is typically located in the AC unit's control box on the roof. If you're uncomfortable working with electrical components, consult a qualified RV technician.
Will this capacitor fit my Dometic air conditioner model?
This capacitor is designed for specific Dometic rooftop AC units that require a 30/5 MFD dual run capacitor. Check your existing capacitor's label or your AC unit's parts diagram to confirm the MFD rating matches. If your current capacitor shows 30/5 MFD, this is your replacement.
Why Choose Elkhart RV Parts?
We specialize in hard-to-find Dometic RV parts that keep your air conditioning system running strong. Located in Elkhart, Indiana—the RV capital of the world—we understand the urgency when your AC fails on a hot day. We stock genuine OEM Dometic parts and ship fast so you can get back to comfortable camping. Our team knows Dometic systems inside and out and can help you identify the right part for your specific model. When you need a critical component like a run capacitor, trust the experts who live and breathe RV parts every day.
| Width (inches) | 5.5 |
|---|---|
| Height (inches) | 1.75 |
| Length (inches) | 9 |
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.