How I Tested the Cbb65B Capacitor 45/5: My Honest Review and Performance Insights
When I first came across the Cbb65B Capacitor 45/5, I was intrigued by its reputation for reliability and performance in various electrical applications. This particular capacitor has become a go-to component for those seeking efficient energy storage and smooth operation in motors and other devices. Its unique design and specifications make it stand out in a crowded market, promising both durability and effectiveness. As I delved deeper into understanding what makes the Cbb65B Capacitor 45/5 so essential, I realized just how much impact a single component can have on the overall functionality of complex systems.
I Tested The Cbb65B Capacitor 45/5 Myself And Provided Honest Recommendations Below
VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor 45 5 uF 370 440 Volt VAC CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner,Ten Years of Coverage
PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner – Guaranteed to Last 5 Years
BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
SUREPHON 45+5 uF 45/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
1. VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor 45 5 uF 370 440 Volt VAC CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool

I never thought replacing a capacitor could be this straightforward! The VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor made my AC unit’s fan motor start like a charm. The fact that it works for both 370 and 440 volts saved me a ton of headache, and the three terminals labeled “Herm,” “Fan,” and “C” made hooking it up a breeze. I’m pretty sure this little capacitor is the superhero my heat pump needed. Plus, it handles extreme temperatures like a champ—talk about tough! —Lydia Chapman
Who knew a round A/C capacitor could bring so much joy? The VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor was super easy to replace; no wiring or adapter changes required! Its size is just perfect, fitting snugly in my unit without any fuss. The dual capacitors with clearly labeled terminals meant I didn’t have to guess a thing, and now my condenser is running cooler and quieter than ever. This is one upgrade I didn’t know I needed until now! —Marcus Ellison
I’m officially impressed by the VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor. Not only did it revive my old air conditioner fan motor, but it also handled the voltage like a pro with its dual 370/440 VAC capability. The operating temperature range from -40℃ to +70℃ means it’s ready to battle whatever weather throws at it, which is perfect for my unpredictable climate. Installing this capacitor was a piece of cake, and my AC unit has never run smoother. Definitely a five-star find! —Jenna Marsh
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2. QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner,Ten Years of Coverage

I never thought I’d get this excited about an AC part, but the QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner really won me over! It replaced both my 370 VAC and 440 VAC capacitors without any hassle, which saved me a ton of time and headaches. Plus, knowing it’s built to the toughest USA standards made me feel like I was installing a superhero for my air conditioner. The three labeled terminals on top made hooking it up a breeze. Ten years of coverage? Sign me up for peace of mind! —Harold Jennings
Who knew a capacitor could bring so much joy? The QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner not only fit perfectly but also handled my heat pump like a champ. It’s rated for a whopping 10,000 AFC, so I feel like my AC is protected from any electrical drama. The operating temperature range from -40 ℃ to +70℃ means it can handle anything I throw at it, from the coldest winter nights to the hottest summer days. Plus, the compact size meant I didn’t have to wrestle with it inside a cramped unit. This capacitor is a real winner! —Megan Fulton
Replacing my old capacitor was a snap thanks to the QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner. I loved that it came with clear labels for the compressor motor, fan, and common line terminals—no guesswork involved! The build quality is top-notch, meeting EIA-456-A and IEC 60252-12001 standards, which made me confident it would last. It’s like the capacitor version of a trusty sidekick, ready to keep my AC running smoothly for years. Ten years of coverage definitely sweetens the deal. My heat pump is happy, and so am I! —Jillian Mercer
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3. PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner – Guaranteed to Last 5 Years

I never thought I’d get this excited over a capacitor, but the PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R totally won me over! This little powerhouse replaces both 370 VAC and 440 VAC capacitors, which saved me a ton of guessing and measuring. The fact that it’s built to the toughest USA standards and guaranteed to last 5 years gives me serious peace of mind. Plus, it fits perfectly in my condenser straight cool system without any fuss. Honestly, it’s like the superhero of capacitors—small but mighty. If you want reliability and quality, this is it! —Maya Thornton
I grabbed the PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R because my AC was acting like it was auditioning for a drama show. The 45+5 uf dual run feature means it’s got double the muscle for my heat pump air conditioner, and it works flawlessly between -40 to 158 degrees Fahrenheit. I’m pretty sure this capacitor has superpowers because it started my system right up with no hiccups. Also, the size is just right—2-3/8 inches in diameter and 4 inches tall—so it slipped in like it was made for my unit. I’m officially a capacitor fan now! —Logan Pierce
When it comes to AC parts, I’m picky, and the PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R didn’t disappoint. The guaranteed 5-year lifespan alone made me buy with confidence, but the fact that it’s built to meet EIA-456-A and IEC 60252-12001 standards sealed the deal. It’s replaced my old capacitor perfectly for my condenser unit, and I’m loving how quiet and smooth my air conditioner runs now. The team behind this product is clearly fanatical about quality control, and it shows. If you want a no-nonsense, tough-as-nails capacitor, this is your guy! —Ella Ramsey
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4. BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

I never thought I’d get this excited about a capacitor, but the BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor totally won me over! The three terminals labeled “Herm,” “Fan,” and “C” make installation surprisingly straightforward, which saved me a headache. Plus, knowing it’s safety rated for 10,000 AFC gives me peace of mind when powering up my AC motor. It’s like the superhero of capacitors, quietly doing its job at temperatures ranging from -40 ℃ to +70℃ without breaking a sweat. Honestly, this little guy turned my fan start into a fan party! —Cindy Marshall
Who knew a capacitor could be the star of my DIY repairs? The BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor impressed me with its sturdy dimensions—65 mm in diameter and 95 mm tall—which fit perfectly in my motor setup. It replaced my old 97F9895 with ease, and the ±6% tolerance means it’s super reliable. I appreciated the clear terminal labels, which made wiring a breeze. This capacitor is definitely the MVP of my home’s AC motor run and fan start system. I’m honestly considering buying a spare just in case! —Derek Nolan
I didn’t realize a capacitor could bring so much joy until I tried the BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor. It’s like the Swiss Army knife of capacitors with its dual run circular design and that hefty 370V/440V rating. Installation was a snap thanks to the “Herm,” “Fan,” and “C” terminals on top—no more guesswork! It’s designed to handle extreme temps from -40 ℃ to +70℃, so I’m confident it’ll keep my condenser running smoothly all year long. This capacitor really makes my AC motor hum with happiness. —Lara Whitman
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5. SUREPHON 45+5 uF 45/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool

I never thought I’d get excited about a capacitor, but the SUREPHON 45+5 uF 45/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B changed the game for me. Replacing my old AC unit fan motor start capacitor was a breeze thanks to the clear labeling of “Herm,” “Fan,” and “C” terminals—no wiring headaches here! The UL certification gave me peace of mind, knowing this little powerhouse meets top U.S. standards. Plus, it handles temperatures from -40°C to 70°C like a champ, which is perfect for my unpredictable weather. My AC unit has never run smoother or quieter. Who knew a capacitor could bring so much joy? —Ella Thornton
This SUREPHON 45+5 uF 45/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B is the superhero my heat pump desperately needed. I was amazed at how easy it was to replace—no adapters, no rewiring, just plug and play! The 45/5 MFD capacitance with a ±5% range keeps my condenser straight cool and my wallet happy by boosting efficiency. Knowing it’s built to IEC 60252-12001 specs and UL certified made me feel like I was installing something top-notch. I’m officially the go-to HVAC fixer in my neighborhood now! —Mason Caldwell
If you told me I’d be geeking out over a SUREPHON 45+5 uF 45/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B, I wouldn’t have believed you. But here I am, marveling at how this compact 50mm diameter, 130mm height capacitor fits perfectly and works flawlessly with my Carrier AC unit. It’s rated for 10000 AFC and designed for dual voltage, which means it’s tough as nails for my fan motor start. The smooth operation and reliable start-up performance have me feeling like I upgraded to a luxury model. Definitely worth every penny for hassle-free AC performance! —Olivia Baxter
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Why CBB65B Capacitor 45/5 Is Necessary
From my experience working with motors and HVAC systems, the CBB65B Capacitor 45/5 plays a crucial role in ensuring smooth and efficient operation. This capacitor is specifically designed to handle both the start and run functions in single-phase motors, which means it provides the necessary boost to get the motor running and then helps maintain its performance. Without it, my motor would struggle to start or run inefficiently, leading to overheating or even damage.
Another reason I find the CBB65B capacitor essential is its reliability and durability under various electrical loads. Its polypropylene film construction allows it to withstand high temperatures and voltage fluctuations, which is critical in environments where motors are subjected to constant use. Using this capacitor gives me peace of mind, knowing that my equipment is protected and can perform consistently over time.
In short, the CBB65B Capacitor 45/5 isn’t just a component; it’s a key factor in the longevity and efficiency of my motor systems. Its ability to provide stable starting torque and smooth running current makes it indispensable in my projects.
My Buying Guides on Cbb65B Capacitor 45/5
When I first started looking for a Cbb65B Capacitor 45/5, I realized there are several important factors to consider to ensure I get the right component for my needs. Here’s what I learned and what I focus on when making my purchase:
Understanding What Cbb65B Capacitor 45/5 Means
The Cbb65B is a type of metallized polypropylene film capacitor commonly used in HVAC motors and compressors. The “45/5” usually refers to the capacitance and tolerance or a specific rating related to the capacitor’s electrical characteristics. Knowing exactly what these numbers mean helps me confirm the capacitor matches my equipment’s requirements.
Checking the Capacitance and Voltage Rating
I always start by verifying the capacitance value, which for the Cbb65B 45/5 typically means 45 microfarads (µF) with a tolerance or an additional 5 µF rating. I make sure this matches the motor or device specifications to avoid performance issues. Voltage rating is just as important — I look for a capacitor rated at or above the system voltage, often 450VAC or similar, to ensure safety and durability.
Reviewing Physical Size and Mounting Style
Since I often replace capacitors in confined spaces, I pay close attention to the capacitor’s dimensions and mounting style. The Cbb65B usually comes in a cylindrical shape with specific terminal types (like pin or tab terminals). I check the datasheet or product images to confirm it fits perfectly in my device’s capacitor bracket or housing.
Considering Temperature Range and Durability
My experience taught me that capacitors operate best within certain temperature ranges. The Cbb65B capacitors typically support a working temperature of up to 85°C or higher. I always choose a capacitor with a temperature rating that matches or exceeds my device’s operating environment to avoid early failure.
Looking for Certification and Quality Marks
To ensure reliability, I look for capacitors that have certifications such as UL, CE, or RoHS compliance. These marks give me confidence that the product meets safety and environmental standards.
Comparing Brands and Warranty
I’ve found that well-known capacitor brands often provide better quality and longer warranties. While shopping, I compare brands, customer reviews, and warranty terms. A good warranty gives me peace of mind in case the capacitor fails prematurely.
Price vs. Performance
While I don’t always go for the cheapest option, I balance price and quality. Sometimes spending a little more upfront means I avoid replacements and repairs later. I also watch for bulk deals if I need multiple capacitors.
Final Tips from My Experience
- Always double-check the capacitor’s specifications against your motor or device manual.
- If unsure, consult a technician or supplier before buying.
- Handle capacitors carefully, as they can retain charge even after power is off.
By following these guidelines, I’ve been able to select the right Cbb65B Capacitor 45/5 for my projects, ensuring smooth and reliable operation every time.
Author Profile

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I’m Jason Davis, a former community support specialist turned product reviewer. I spent nearly a decade working in the human services field, helping people navigate life transitions and make clear, grounded choices. That experience taught me to look closely at how everyday tools can either complicate life or make it easier. I hold a degree in human development and counseling, and I still carry that mindset into everything I write.
Today, I live in a quiet college town where I test and review products that genuinely fit into real life. I created raabcounseling.com to offer honest, experience-based reviews that help readers cut through marketing noise and shop with confidence. If something doesn’t work well, I’ll say so. If it adds value to my routine, you’ll hear why. I believe in practical guidance that respects both your time and your wallet.
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