This Dometic run capacitor is an essential electrical component for RV air conditioning and heating systems. The 5MFD 370V oval capacitor helps regulate power to your Dometic HVAC unit, ensuring smooth operation and preventing compressor damage. If your RV AC is struggling to start, running inefficiently, or making unusual sounds, a failed capacitor is often the culprit—and this genuine OEM replacement gets your system back online quickly.
Key Features
- 5 microfarad (MFD) capacitance rating for precise electrical performance
- 370 volt rating compatible with standard RV air conditioning systems
- Oval-shaped design fits original Dometic mounting locations
- Genuine OEM Dometic part—not an aftermarket substitute
- Direct replacement for failed or aging capacitors
- Improves AC startup reliability and compressor longevity
Technical Specifications
| Specification | Value |
|---|---|
| Capacitance | 5 MFD |
| Voltage Rating | 370V |
| Shape | Oval |
| Part Number | 290333345 |
| Type | Run Capacitor |
Frequently Asked Questions
How do I know if my RV capacitor has failed?
Common signs include your AC unit not starting, the compressor humming but not running, reduced cooling power, or a burning smell near the HVAC unit. Capacitors typically fail after 10–15 years of use.
Is this capacitor compatible with my Dometic air conditioner?
This 5MFD 370V oval capacitor fits many Dometic rooftop and under-bed AC units. Check your existing capacitor or your RV's HVAC documentation to confirm the MFD and voltage ratings match before ordering.
Can I install this capacitor myself?
Capacitors store electrical charge and can be dangerous if mishandled. We recommend having a qualified RV technician perform the replacement to ensure your safety and proper installation.
Why Choose Elkhart RV Parts
We specialize in hard-to-find Dometic replacement parts that keep your RV running smoothly. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine OEM Dometic components backed by expert support. When you need the exact part, not a substitute, trust Elkhart RV Parts.
| Brand | Dometic |
|---|---|
| Part_number | 290333345 |
| Product_type | Replacement Run Capacitor |
| Capacitance_mfd | 5 |
| Voltage | 370 |
| Case_design | Oval |
| Application | Air conditioning and cooling systems |
| System_compatibility | Heat pump systems |
| Compatible_series | 3104310633073309 |
| Condition | New |
| Part_category | OEM Part |
| Product_category | RV Parts |
| Subcategory | Service Parts |
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.