When the summer sun beats down, a functioning RV air conditioner isn’t just a luxury—it’s a necessity. There’s nothing worse than pulling into your campsite, ready to relax, only to find your RV AC unit struggling or completely refusing to kick on. Often, the culprit is a failing capacitor RV air conditioner owners dread, but it’s a fix you can usually tackle yourself!
Capacitors are like the little workhorses of your AC unit, providing the initial jolt to get the compressor and fan motors spinning, and then helping them run smoothly and efficiently. Without a healthy capacitor, your AC might hum, struggle to start, or simply blow warm air. But don’t sweat it! Replacing this key electrical component is a common RV AC repair, and we’re here to help you find the perfect replacement.
We’ve scoured the market to bring you the top 7 capacitor RV air conditioner options that offer reliability, performance, and peace of mind. Let’s dive into these essential components that keep your RV cooling system running strong.
1. Fits for Dometic 3312195.000 Air Conditioner RV AC Motor Capacitor 60/5 MFD
This Dometic-compatible capacitor is a fantastic choice for many RV owners looking to restore their cooling performance. What makes it stand out is its dual-run functionality, effectively powering both your compressor and fan motor from a single unit. This streamlines your RV AC repair process and ensures both critical components receive the stable voltage and current they need for optimal operation.
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Key Features:
- Designed for popular Dometic RV AC models (e.g., 57915.741, B595146).
- Specifications: 370VAC, 60/5 MFD, 50/60Hz.
- Wide operating temperature range: -40°F to +185°F.
- Enhanced AC performance by optimizing motor speed and power.
- Simple installation with clearly labeled “Herm,” “Fan,” and “C” terminals.
- Durable design with explosion-proof technology and nickel-plated copper terminals.
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Pros:
- Excellent compatibility with a range of Dometic units.
- Dual-run capacitor simplifies wiring and component count.
- Built to withstand demanding RV environments.
- Contributes to improved system reliability.
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Cons:
- Always requires verifying your specific unit’s specifications for a perfect fit.
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User Impressions: RVers frequently praise this capacitor for being an exact fit and bringing their Dometic AC units back to life instantly. Many highlight the ease of installation, even for DIY enthusiasts, and appreciate the noticeable improvement in their air conditioner’s startup and overall efficiency.
2. 3313107.018 Capacitor Compatible with Dometic RV Air Conditioner 13500 BTU Models
When your Dometic 13500 BTU RV air conditioner starts acting up, this replacement capacitor is often exactly what you need. Engineered for steady performance, this 50/5 MFD capacitor is a direct swap for several Dometic part numbers, making your AC unit troubleshooting much easier. Its design focuses on long-lasting reliability, ensuring you stay cool on those extended road trips.
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Key Features:
- Specifically compatible with Dometic 13500 BTU AC Models (e.g., B57915.711C0).
- Product parameters: 50/5 Microfarad (MFD), 370VAC.
- Clearly labeled “Herm,” “Fan,” and “C” terminals for straightforward installation.
- Replaces part numbers like 3316995.900, 3316348.900, 3100248.487.
- High-quality construction for reliable and efficient air conditioning performance.
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Pros:
- Direct fit for common Dometic 13500 BTU units.
- Ensures reliable and efficient performance.
- Solid replacement for multiple OEM part numbers.
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Cons:
- Primarily targets 13500 BTU Dometic units, so verify your BTU rating.
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User Impressions: Customers report that this capacitor is a perfect match for their Dometic 13500 BTU units, restoring powerful cooling. The ease of swapping out the old unit for this new one is a consistent positive, and users appreciate the peace of mind that comes with a robust, reliable replacement part.
3. 3313107.018 Capacitor Compatible with Dometic RV Air Conditioner 50+5uf+5%
This capacitor, another strong contender for Dometic RV AC units, stands out for its incredibly durable construction. Built with a heavy-duty metal casing and flame-retardant resin encapsulation, it’s designed to resist high temperatures and moisture, crucial for any component in an RV. It promises consistent starting torque and reduced equipment noise, making your air conditioner not just functional, but also quieter.
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Key Features:
- Capacitance rating: 50/5 MFD (50+5uf+5%), 370V/450VAC, 50/60Hz.
- Direct replacement for 3313107.018 and other compatible models.
- Durable materials: heavy-duty metal casing and flame-retardant resin encapsulation.
- Superior performance for consistent starting torque and smooth motor operation.
- Reduces equipment noise and vibration.
- Includes important safety note for proper installation.
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Pros:
- Exceptional durability for harsh conditions.
- Dual voltage rating (370V/450VAC) offers versatility.
- Helps reduce operational noise, enhancing comfort.
- Broad compatibility with several Dometic part numbers.
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Cons:
- The highlighted safety note for discharging old capacitors is a reminder that proper electrical safety must always be observed.
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User Impressions: Reviewers often highlight this capacitor’s robust build quality, noting its heavier feel compared to original units. Many comment on how smoothly their AC units run after installation, appreciating the reduced noise and reliable start-ups. It’s seen as a reliable upgrade rather than just a replacement.
4. 3312195.000 RV AC Air Conditioner Motor Capacitor 60/5 MFD
Very similar to our first entry, this 3312195.000 capacitor is another top-tier choice for Dometic RV air conditioners. It’s engineered to boost your AC’s performance by stabilizing voltage and current, ensuring both your compressor and fan motors run at peak efficiency. The clear labeling on its terminals makes for an easy DIY RV repair, getting you back to cool comfort in no time.
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Key Features:
- Wide compatibility with Dometic RV AC models (e.g., 57915.741, B595146).
- Specifications: 370VAC, 60/5 MFD, 50/60Hz.
- Operating Temperature: -40°F to +185°F.
- Enhances air conditioner performance and system efficiency.
- Easy to install with clearly labeled “Herm,” “Fan,” and “C” terminals.
- Built for longevity and safety with explosion-proof technology and nickel-plated copper terminals.
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Pros:
- Reliable dual-run functionality for both fan and compressor.
- Boosts overall AC efficiency and lifespan.
- Robust construction for durability in tough RV environments.
- Simple installation process.
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Cons:
- As with all replacements, double-check your existing capacitor’s MFD and voltage.
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User Impressions: This capacitor consistently receives high marks for being a perfect fit and bringing a noticeable improvement to RV air conditioning. Users appreciate its durability and the straightforward nature of the replacement process, often sharing how quickly their RVs were cooling efficiently again after installation.
5. XXHCML 1499-5461 Fan Capacitor for Coleman RV Air Conditioner
For Coleman RV air conditioner owners, this specific fan capacitor is a lifesaver when your AC unit’s fan struggles to start or runs erratically. Unlike the dual-run capacitors, this unit focuses specifically on powering your fan motor, ensuring proper airflow and heat exchange within your Coleman Mach Series unit. It’s a precise component for a common Coleman issue.
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Key Features:
- Designed as a direct replacement for Coleman RV Air Conditioners.
- Compatible with Coleman Mach Series models (e.g., 67, 733, 737).
- Microfarad Rating: 7.5 MFD.
- Power Rating: 370 VAC / 50/60Hz.
- Lightweight at 0.9 LB.
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Pros:
- Specific compatibility for Coleman Mach Series fan motors.
- Restores proper fan operation for effective cooling.
- Straightforward replacement for a single-function capacitor.
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Cons:
- This is a fan-only capacitor; if your compressor is also having issues, you’ll need a separate compressor or dual-run capacitor.
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User Impressions: Coleman owners often report this capacitor as the exact part needed to get their AC fan spinning again, especially when the compressor still works but air isn’t moving. The specific compatibility for Coleman models is a significant plus, making it a hassle-free fix for fan-related cooling problems.
6. 3314471.017 RV Air Conditioner Motor Capacitor Compatible with Dometic 55+15 uF
If you have a larger Dometic RV air conditioner, this 3314471.017 capacitor with its 55+15 uF rating might be exactly what your cooling system needs. This robust capacitor not only helps your AC motor start faster but also works to reduce energy consumption and extend the service life of your compressor and other related components. It’s a comprehensive upgrade for optimal performance.
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Key Features:
- High-quality material for RV air conditioning systems.
- Specifications: 55+15 uF ±6%, 370/440V AC.
- Designed for longer service life of compressors and AC systems.
- Easy to install with clearly labeled “Herm,” “Fan,” and “C” terminals.
- Reduces energy consumption.
- Widely applicable beyond RV ACs to other compressors and heat pump air conditioning.
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Pros:
- Higher MFD rating suitable for larger Dometic AC units.
- Extends the lifespan of expensive compressor components.
- Dual voltage rating (370/440V) provides flexibility.
- Contributes to energy efficiency.
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Cons:
- Specific 55+15 uF rating means it’s not a universal fit; confirm your unit’s requirements.
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User Impressions: Users with larger Dometic units find this capacitor to be a perfect, powerful replacement. They appreciate the noticeable improvement in startup efficiency and report that their AC units run more smoothly and quietly. The promise of extended compressor life is also a major draw for many.
7. 14995761 1499-5761 Run Capacitor 60uF 370VAC 50/60Hz Compatible for Coleman
This 60uF run capacitor is a versatile choice for a wide array of Coleman RV air conditioner models, serving as a critical component for the compressor motor. It’s a single-function capacitor designed to provide the continuous electrical power needed for your AC to run effectively once started. Beyond RV ACs, its broad application makes it a handy part to have for other motors and compressors.
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Key Features:
- Compatible with numerous Coleman models (e.g., 8535B6, 48203C966, 48054).
- Capacitor part number: 14995761 (or 1499-5761).
- Specifications: 60uF, 370VAC, 50/60Hz.
- Versatile applications: Air Conditioners, Motors Washer, Compressors Pump, Water Pump Motor.
- Non-polarized for flexible installation.
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Pros:
- Broad compatibility with many Coleman RV AC units.
- Versatile for other home and motor applications.
- Non-polarized design simplifies wiring.
- Reliable performance for compressor motors.
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Cons:
- This is a run capacitor, typically for the compressor. If your unit has separate start and run capacitors, or a separate fan capacitor, you may need additional components.
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User Impressions: Coleman RV owners consistently give high marks for this capacitor’s exact fit and reliable performance. Many describe it as a quick and effective fix for compressor issues, allowing their AC units to cool powerfully again. The non-polarized feature is often appreciated for simplifying the installation process.
FAQ Section: All Your Capacitor RV Air Conditioner Questions Answered
Finding the right capacitor RV air conditioner component can feel a bit technical, but it’s a critical part of keeping your mobile home cool. Here are some frequently asked questions to help you out.
Q1: What does a capacitor do in an RV air conditioner?
A: In an RV air conditioner, the capacitor acts like a small, rechargeable battery that provides a burst of electricity. There are two main types:
* Start Capacitor: Gives the compressor motor a powerful jolt to get it spinning initially.
* Run Capacitor: Provides continuous electrical assistance to both the compressor and fan motors, helping them run efficiently and smoothly once started. Many RV ACs use a dual-run capacitor that handles both the compressor and the fan.
Q2: How do I know if my RV AC capacitor is bad?
A: Several signs can point to a failing capacitor:
* AC unit hums but doesn’t start: This is a classic symptom of a bad start or run capacitor for the compressor.
* Fan spins slowly or not at all: Suggests an issue with the fan motor’s run capacitor.
* AC blows warm air: If the compressor isn’t running, it won’t cool the refrigerant.
* AC trips the breaker repeatedly: A struggling motor due to a bad capacitor can draw excessive current.
* Visually bulged or leaking capacitor: A clear physical sign it’s failed.
Q3: Is it difficult to replace an RV AC capacitor?
A: For most mechanically inclined RV owners, replacing an RV AC capacitor is a moderately easy DIY task. However, it involves working with high voltage electricity, so extreme caution is paramount. Always disconnect all power sources, discharge the old capacitor safely (using a screwdriver with an insulated handle across the terminals), and follow your RV AC unit’s service manual instructions. If you’re unsure, it’s best to call a professional.
Q4: What’s the difference between a MFD rating and a VAC rating on a capacitor?
A:
* MFD (Microfarad) Rating: This indicates the capacitance, or the amount of electrical charge the capacitor can store. It must match your existing capacitor’s MFD rating exactly for proper motor operation.
* VAC (Voltage AC) Rating: This specifies the maximum voltage the capacitor can safely handle. You can use a replacement capacitor with an equal or higher VAC rating than your original, but never lower. For example, if your old capacitor is 370VAC, a 370VAC or 440VAC replacement is acceptable.
Q5: Can I just use any capacitor with the same MFD and VAC?
A: While MFD and VAC are critical, it’s always best to get a capacitor specifically designed or recommended for your RV air conditioner model (e.g., Dometic or Coleman). The physical size, terminal configuration, and environmental resilience can vary, impacting fit and longevity.
Q6: How long do RV AC capacitors typically last?
A: RV AC capacitors can last anywhere from 5 to 10 years, sometimes more. However, factors like extreme heat, frequent cycling (on/off), voltage fluctuations, and overall wear and tear can shorten their lifespan. It’s a good idea to inspect them annually during routine RV AC maintenance.
Q7: Should I replace a start capacitor, run capacitor, or a dual-run capacitor?
A: This depends on your specific RV AC unit and the symptoms you’re experiencing. Many modern RV ACs use a single dual-run capacitor that handles both the compressor and the fan motor. If your unit has separate components, you’d replace the one that corresponds to the failing motor (e.g., if the fan is out, replace the fan run capacitor). Always check your unit’s wiring diagram or the existing capacitor for its type and specifications.
