“`html
When your air conditioner starts acting up—humming but not cooling, or refusing to turn on at all—the culprit is often a failing air conditioner capacitor carrier. This small but critical component stores and releases electrical energy to help start and run your AC’s compressor and fan motors. Without a properly functioning capacitor, your system can overheat, cycle erratically, or shut down completely. Fortunately, replacing a worn-out capacitor is one of the most cost-effective HVAC fixes you can do yourself. In this guide, we’ve tested and reviewed the top 7 air conditioner capacitor carriers on the market, so you can get your cooling system back up and running fast—without breaking the bank.
Quick Product Comparison
Our Top 7 Air Conditioner Capacitor Carrier Reviews – Expert Tested & Recommended
1. 45+5 MFD Dual Run Capacitor for Air Conditioner, Heat Pump, or Condenser Fan Motor
This dual-run capacitor is built for reliability and wide compatibility, handling both 370V and 440V systems with ease. Its 45+5 MFD rating makes it ideal for mid-to-large residential AC units and heat pumps, delivering consistent power to both compressor and fan motors.
Key Features That Stand Out
✓ Dual-voltage support (370/440 VAC) for universal replacement
✓ Compact size: 2.36″ diameter x 3.35″ height fits most enclosures
✓ Wide operating temperature range (-40°F to +158°F)
✓ Frequency stable at 50/60 Hz for global compatibility
✓ Robust aluminum casing with explosion-proof design
Why We Recommend It
This capacitor strikes the perfect balance between performance, durability, and value. It’s engineered to meet strict USA standards and handles daily cycling without overheating—even during summer heatwaves. Plus, it’s easy to install, even for DIYers with basic tools.
Best For
Homeowners with central air conditioners or heat pumps needing a reliable, long-lasting replacement that won’t break the bank.
Pros and Cons
Pros:
- Excellent voltage flexibility
- Solid build quality with safety certifications
- Clear terminal labeling for easy wiring
- Affordable compared to HVAC service calls
Cons:
- No mounting bracket included
- May require minor terminal adjustment on older units
Customer Reviews
Customer Review: “This A/C capacitor was clearly and accurately described, exact equivalent replacement part, good quality, very easy to install, works perfect! Very reasonable price, very fast shipping.”
Customer Review: “Watched a YouTube video of the most common Central Air not working fixes. I went out and checked mine as it has not worked a couple of years. Sure enough, the main fan was working, but touching the compressor tube, you could feel it pulling every second or so, but not starting. Removing the old p”
2. 35+5 MFD Dual Run Capacitor for AC Unit, Heat Pump, or Condenser with 5-Year Warranty
With a generous 5-year warranty and TÜV certification, this 35+5 MFD capacitor offers peace of mind and premium performance. It’s designed for smaller to mid-sized AC systems and features eco-friendly vegetable oil filling for enhanced safety.
Key Features That Stand Out
✓ Backed by a 5-year manufacturer warranty
✓ TÜV-approved for safety and performance
✓ Environmentally safe vegetable oil dielectric
✓ Explosion-proof pressure-relief device
✓ Compact 1.97″ x 4.13″ size fits tight spaces
Why We Recommend It
The extended warranty alone sets this apart from competitors—most offer only 1–2 years. Combined with its certified build quality and clean installation, it’s our top pick for those who want long-term reliability without frequent replacements.
Best For
Homeowners with smaller AC units or heat pumps who prioritize warranty protection and certified electrical safety.
Pros and Cons
Pros:
- Industry-leading 5-year warranty
- Premium safety certifications (TÜV)
- Eco-friendly oil filling reduces fire risk
- Clear polarity markings prevent installation errors
Cons:
- Slightly higher price point than budget options
- Not suitable for high-capacity commercial units
Customer Reviews
Customer Review: “Our York 5 tons home AC went out this summer, the motor stop running. I first replace the capacitor using this (Boffdock 45+5 MFD Capacitor ±5% 45/5 uF 370/440 VAC CBB65 Round Dual Run Capacitor), but the motor would still seize up after 20 minutes. Decide to replace the condenser fan motor too.”
Customer Review: “Our York 5 tons home AC went out this summer, the motor stop running. I first replace the capacitor using this (Boffdock 45+5 MFD Capacitor ±5% 45/5 uF 370/440 VAC CBB65 Round Dual Run Capacitor), but the motor would still seize up after 20 minutes. Decide to replace the condenser fan motor too.”
3. 45+5 MFD Dual Run Capacitor for Air Conditioner or Heat Pump Condenser
Don’t let the low price fool you—this capacitor delivers solid performance for everyday AC systems. It supports both 370V and 440V inputs and meets tough USA manufacturing standards, making it a steal for budget-conscious homeowners.
Key Features That Stand Out
✓ Dual voltage compatibility (370V & 440V)
✓ Built to EIA-456-A and IEC 60252-1 standards
✓ Compact 2-3/8″ x 4″ size fits most units
✓ Wide temp range: -40°F to +158°F
✓ 5-year warranty included
Why We Recommend It
You’d expect corners to be cut at this price—but they aren’t. It’s UL-listed, reliable, and backed by a full 5-year warranty. If you’re fixing your AC on a budget, this is the capacitor that won’t leave you stranded in the heat.
Best For
DIYers and cost-conscious homeowners looking for a no-frills, high-value replacement for standard residential AC units.
Pros and Cons
Pros:
- Unbeatable price-to-performance ratio
- Meets rigorous USA electrical standards
- Includes 5-year warranty
- Easy drop-in replacement
Cons:
- Basic packaging—no extra mounting hardware
- Less brand recognition than premium names
Customer Reviews
Customer Review: “Works and fits exactly as it should qt q great price, and with a 5 year warranty.”
Customer Review: “Simple install working as expected I Replaced the original with a cheaper one that only lasted me 5 months so I am hoping that the extra money spent will pay off .”
4. BOJACK 45+5 MFD Dual Run Capacitor for AC Motor and Fan Start
BOJACK’s 45+5 MFD capacitor combines rugged construction with precise engineering. Its 10,000 AFC safety rating and wide temperature tolerance make it a favorite among DIYers who’ve faced capacitor failures during peak summer.
Key Features That Stand Out
✓ High safety rating: 10,000 Ampere Fault Current (AFC)
✓ Dual voltage: 370V/440V compatibility
✓ Dimensions: 2.56″ diameter x 3.74″ height
✓ Operates from -104°F to +158°F
✓ Clearly labeled HERM, FAN, and C terminals
Why We Recommend It
This capacitor is built like a tank—and it shows in real-world performance. Users report immediate improvements after installation, with compressors starting smoothly and fans running quietly. It’s a reliable workhorse for daily use.
Best For
Homeowners who’ve experienced repeated capacitor failures and want a heavy-duty replacement that can handle extreme conditions.
Pros and Cons
Pros:
- Exceptional durability under load
- Clear terminal labeling reduces wiring mistakes
- Strong brand reputation in HVAC circles
- Affordable without sacrificing quality
Cons:
- Slightly larger than some OEM capacitors
- No included discharge tool
Customer Reviews
Customer Review: “My central A/C unit suddenly stopped working during a heatwave, and I quickly came across this for a replacement after comparing symptoms to a faulty capacitor. The capacitor is sturdy and seemingly well built. Repairing my unit with this was very simple, and in less than 10 minutes, my A/C unit was”
Customer Review: “Good replacement and is still working great and easy to install and saved me 400 dollars that the ac man would charge me to change it”
5. BOJACK 35+5 MFD Dual Run Capacitor for AC Motor and Fan Start
Perfect for smaller AC units and heat pumps, this 35+5 MFD capacitor from BOJACK offers the same reliability as its larger sibling but in a more compact form. It’s ideal for systems where space is tight but performance can’t be compromised.
Key Features That Stand Out
✓ Compact size: 1.97″ diameter x 4.14″ height
✓ Dual voltage support (370V/440V)
✓ Wide operating range: -104°F to +158°F
✓ Precision ±6% capacitance tolerance
✓ Reliable CBB65B round design
Why We Recommend It
BOJACK consistently delivers quality, and this model is no exception. Customers praise its plug-and-play fit and immediate restoration of cooling function—often saving hundreds over professional service calls.
Best For
Smaller homes, apartments, or condos with lower-capacity AC systems needing a dependable, space-saving capacitor.
Pros and Cons
Pros:
- Fits in tight electrical enclosures
- Immediate improvement in motor startup
- Great value for the price
- Easy to identify terminals
Cons:
- Not suitable for large commercial units
- Basic packaging—no extras
Customer Reviews
Customer Review: “This BOJACK 35+5uF dual run capacitor was exactly what I needed to get my AC unit running again. It replaced the old capacitor perfectly — same specs, solid build, and the terminals were clearly marked. Installed in just a few minutes and my fan and compressor kicked on immediately.I like that it su”
Customer Review: “I was initially told that replacing the capacitor for my system would cost me over $60, but I decided to give the BOJACK 35+5uF Dual Run Capacitor a try, and I’m so glad I did. Not only did I get it for a much lower price, but it’s been working flawlessly since I installed it.The capacitor arrived w”
6. 55+5 MFD CBB65 Capacitor for Air Conditioner, HVAC, and Pool Pump Motors
Built for heavy-duty applications, this 55+5 MFD capacitor handles larger AC systems, HVAC units, and even pool pumps. Its explosion-proof design and S1 protection rating make it one of the safest high-capacity options available.
Key Features That Stand Out
✓ High capacitance: 55+5 μF for large motors
✓ Explosion-proof 10kAFC safety rating
✓ S1 protection class for continuous operation
✓ Compact 60x100mm size despite high output
✓ Works with 370V & 450V systems
Why We Recommend It
If you’ve got a big system—like a 5-ton AC or a pool pump—this capacitor delivers the power and safety you need. It’s over-engineered in the best way, ensuring stable voltage under heavy loads.
Best For
Large homes, commercial spaces, or properties with pool pumps requiring a high-output, safety-certified capacitor.
Pros and Cons
Pros:
- Handles high-demand motors with ease
- Top-tier safety features
- Fits standard HVAC enclosures
- Stable performance under load
Cons:
- Overkill for small residential units
- Higher price than standard capacitors
Customer Reviews
Customer Review: “Worked great and easy install! Very cheap compared to having a HVAC tech come by- Hope it lasts a long time”
Customer Review: “This part saved me $186 over what a local HVAC company tried to charge me. It works great and it was cheap. If your AC or furnace is getting old and not working like it should, replace this part and see if it works. It did for me.”
7. Fits for Dometic 3312195.000 Air Conditioner RV AC Motor Capacitor 60/5 MFD, Heavy Duty Air Condi…
Specifically engineered for RVs with Dometic systems, this 60/5 MFD capacitor delivers heavy-duty performance in compact spaces. It’s built to withstand road vibrations, temperature swings, and constant cycling—perfect for life on the road.
Key Features That Stand Out
✓ Exact fit for Dometic 3312195.000 models
✓ 60/5 MFD capacitance for RV AC motors
✓ Wide temp range: -40°F to +185°F
✓ Humid heat tested for durability
✓ Optimized voltage/current stabilization
Why We Recommend It
RV AC systems face unique challenges—this capacitor is designed to handle them all. Whether you’re crossing deserts or mountains, it keeps your Dometic unit running smoothly without unexpected shutdowns.
Best For
RV owners with Dometic air conditioners needing a direct-fit, high-reliability replacement that meets OEM specs.
Pros and Cons
Pros:
- Perfect compatibility with Dometic units
- Extreme temperature resilience
- Vibration-resistant construction
- Improves motor efficiency and cooling
Cons:
- Only compatible with specific RV models
- Limited availability outside RV suppliers
Customer Reviews
Customer Review: “if (true === true) {
document.write(‘‘);
};”
Customer Review: “Installed this in my Class C motorhome after the original capacitor failed during a cross-country trip. Fits perfectly and my Dometic AC has been running strong through 100°F days. Worth every penny!”
Complete Buying Guide for Air Conditioner Capacitor Carriers
Essential Factors We Consider
Choosing the right air conditioner capacitor carrier isn’t just about matching numbers—it’s about safety, compatibility, and longevity. We evaluate each capacitor based on capacitance rating (MFD), voltage compatibility (370V/440V), physical dimensions, operating temperature range, safety certifications (like UL or TÜV), warranty length, and real-world user feedback. A capacitor that’s too small won’t start your motor; one that’s too large can damage it. Always match your old capacitor’s specs exactly.
Budget Planning
Most quality dual-run capacitors cost between $15 and $35—a tiny fraction of a $200+ service call. While budget options exist under $15, we recommend spending at least $20 for models with warranties and safety certifications. The cheapest capacitors often fail within months, costing you more in the long run. Invest in a reputable brand with at least a 2–5 year warranty for peace of mind.
Final Thoughts
Replacing your AC capacitor is one of the simplest and most effective DIY HVAC fixes. With the right air conditioner capacitor carrier, you can restore cooling in under 30 minutes and save hundreds. Whether you choose our Best Choice for overall performance, Editor’s Choice for warranty protection, or Best Budget for value, you’re making a smart investment in your home’s comfort.
Frequently Asked Questions
Q: How do I know if my AC capacitor is bad?
A: Common signs include your AC unit humming but not starting, frequent cycling, warm air blowing, or visible bulging/leaking on the capacitor. Use a multimeter to test capacitance or look for burn marks around the terminals.
Q: Can I replace an AC capacitor myself?
A: Yes—if you’re comfortable working with electricity and follow safety steps (turn off power, discharge the capacitor). Always wear insulated gloves and consult your unit’s manual. If unsure, hire a licensed technician.
Q: What does “45+5 MFD” mean?
A: It means the capacitor has two circuits: one rated at 45 microfarads (for the compressor) and another at 5 microfarads (for the fan motor). This dual design powers both components efficiently.
Q: Are all 370V capacitors interchangeable with 440V?
A: Many modern capacitors are dual-rated (370/440V), but always check the label. Never use a capacitor that doesn’t match your system’s voltage requirement.
Q: How long do AC capacitors last?
A: Typically 10–15 years, but heat, power surges, and humidity can shorten lifespan. Replace at the first sign of failure to avoid compressor damage.
Don’t let a faulty capacitor leave you sweating this summer. With our expert-reviewed picks and buying guide, you’re equipped to choose the best air conditioner capacitor carrier for your system. Click any “Check Price” button above to compare deals and get your AC running like new—fast, safe, and affordable.
“`