The Dometic 3310711.001 is a dual-run capacitor designed specifically for Dometic rooftop air conditioners. This 45/5 MFD capacitor provides the electrical boost needed to start and run both the compressor and fan motor in your RV's AC unit. If your air conditioner won't start, runs intermittently, or the compressor hums without starting, a failed capacitor is often the culprit. This genuine Dometic replacement ensures reliable performance and proper electrical specifications for your cooling system.
Key Features
- Dual Capacitance Rating: 45 MFD for compressor start/run, 5 MFD for fan motor operation
- Genuine Dometic OEM Part: Engineered to exact specifications for Dometic rooftop AC units
- High-Temperature Rated: Designed to withstand the extreme heat conditions inside RV roof-mounted air conditioners
- Direct Replacement: Fits multiple Dometic rooftop air conditioner models with matching electrical requirements
- Critical AC Component: Essential for proper compressor and fan motor startup and operation
- Professional-Grade Construction: Metal housing with secure terminal connections for reliable electrical performance
Technical Specifications
| Part Number | 3310711.001 |
| Capacitance Rating | 45/5 MFD (Microfarads) |
| Voltage Rating | 370 VAC |
| Application | Rooftop Air Conditioner - Compressor & Fan Motor |
| Capacitor Type | Dual Run Capacitor |
| Terminal Configuration | Multi-terminal (Common, HERM, Fan) |
Compatible Models
This capacitor is designed for Dometic rooftop air conditioners requiring 45/5 MFD dual-run capacitors. Verify your existing capacitor's ratings before ordering to ensure proper compatibility.
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 then stops after a few minutes, or visible bulging/leaking on the capacitor itself. If your AC worked fine then suddenly stopped, the capacitor is a prime suspect. Always disconnect power before inspecting electrical components.
Can I substitute a different MFD rating?
No. Capacitors must match the exact MFD ratings specified by the manufacturer. Using incorrect capacitance values can cause motor damage, reduced cooling efficiency, or complete system failure. Always replace with the same 45/5 MFD rating for proper compressor and fan operation.
Is this a DIY repair or should I hire a technician?
If you're comfortable working with electrical components and can safely access your rooftop AC unit, capacitor replacement is straightforward. However, it involves 120V AC power and requires proper safety precautions. Always disconnect shore power and turn off breakers before working on AC units. If you're unsure, consult a qualified RV technician.
How long do AC capacitors typically last?
RV AC capacitors typically last 5-10 years depending on usage and climate conditions. Extreme heat, frequent cycling, and voltage fluctuations can shorten lifespan. Capacitors are wear items that eventually fail, so keeping a spare on hand for emergency repairs is smart preventive maintenance.
Why Choose Elkhart RV Parts?
ElkhartRVParts.com specializes in hard-to-find Dometic replacement parts that keep your RV systems running. We're located in Elkhart, Indiana — the RV Capital of the World — and we understand the frustration of tracking down the exact part you need. This is a genuine Dometic OEM capacitor, not an aftermarket substitute, ensuring proper fit and reliable performance.
We offer fast shipping, expert technical support, and a commitment to getting you back on the road quickly. When your AC fails in the middle of summer, you need the right part fast — and we deliver.
| Capacitance | 45/5 MFD |
|---|---|
| Product type | Capacitor |
| Compatibility | Dometic SVC series air conditioners and similar rooftop AC models |
| Oem | true |
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.