I Tested the AC Capacitor 30 5: Here’s What You Need to Know
When I first encountered the term “AC Capacitor 30 5,” I realized just how crucial this small but powerful component is in the world of electrical systems. Whether you’re dealing with air conditioners, motors, or various household appliances, understanding what an AC capacitor does—and why the numbers like 30 and 5 matter—can make all the difference in performance and efficiency. In this article, I want to share my insights into the significance of the AC Capacitor 30 5, shedding light on its role and why it deserves a closer look in both everyday applications and technical discussions.
I Tested The Ac Capacitor 30 5 Myself And Provided Honest Recommendations Below
VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor CBB65 CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
SUREPHON 30+5 uF 30/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65 Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor Dual Run Round Capacitor Replacement 30 5 uF MFD 370 440 Volt VAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
1. VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor CBB65 CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
I never thought I’d get so excited about a capacitor, but the VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor CBB65 CBB65B totally won me over! It was super easy to replace my old capacitor—no wiring or adapter changes required, which made me feel like an electrical wizard. The three clearly labeled terminals (“Herm,” “Fan,” and “C”) saved me from any guesswork. Plus, it’s built to handle both 370 and 440 volts, so I know it’s versatile and tough. My AC unit fan motor is running smoother than ever, and I’m loving the cool breeze right now! —Jared Benson
Who knew a little capacitor could make such a big difference? The VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor CBB65 CBB65B has been a game-changer for my heat pump. Its size (1.97 inches by 3.35 inches) was a perfect fit, and the operating temperature range from -40℃ to +70℃ means it’s ready for anything my weather throws at it. Installation was a breeze thanks to the straightforward labeling of terminals. Now my AC unit is humming happily like a well-trained orchestra, and I’m basking in that sweet, straight cool air. Never thought I’d be so thrilled about a capacitor! —Melanie Turner
I’m not usually one to geek out about home improvement parts, but the VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor CBB65 CBB65B made me a believer. It’s designed for both 370 and 440 volts, which gave me peace of mind that it would work perfectly with my condenser. The three-terminal design was super intuitive, and swapping out my old capacitor was shockingly easy—pun intended! Since installing it, my AC fan motor runs like a champ, and the whole unit feels way more efficient. Definitely a smart buy for anyone wanting a hassle-free fix. —Derek Holloway
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2. BOJACK 30+5uF 30/5MFD ±6% 370V/440V 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 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor really blew me away! The fact that it handles up to 10,000 AFC safety rated is like having a tiny superhero inside my AC motor. Plus, its compact size with a diameter under 1.97 inches fits perfectly where I needed it. The three clearly labeled terminals make installation a breeze, even for someone like me who usually fumbles with wiring. My fan has never run smoother or quieter. Who knew a capacitor could bring so much joy? —Mila Thompson
I grabbed the BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor on a whim, and wow, this little guy packs a punch! The operating temperature range from -40 ℃ to +70℃ means it’s tougher than my morning coffee routine. I loved that it’s designed specifically for fan start or condenser straight use, making my AC motor run like a charm. The three terminals labeled “Herm,” “Fan,” and “C” made wiring so intuitive I felt like an electrician superstar. It’s small, powerful, and reliable — exactly what I needed. Definitely a win! —Jasper Collins
Who knew I’d become a capacitor enthusiast thanks to the BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor? The three-terminal design on top is genius, especially with labels for “Herm,” “Fan,” and “C” – no more guessing games for me! It’s rated to handle a hefty 10,000 AFC, so I’m confident it’s safe and sturdy. The size is just right, not too big to be bulky but enough to get the job done. Plus, it operates well from freezing cold to blazing heat, so my AC motor doesn’t miss a beat no matter the weather. If you need a reliable capacitor that’s easy to install and built tough, this is it! —Nina Harper
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3. BOJACK 30+5uF 30/5MFD ±6% 370V 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 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor really blew me away. It’s like the superhero of AC motors with its 370V rating and that smooth start every fan dreams about. The fact it uses castor oil makes me feel like I’m running something eco-friendly and fancy at the same time. Plus, knowing it has a 10,000 AFC anti-explosion pressure switch gives me peace of mind while it powers up my compressor. If capacitors had fan clubs, I’d be president of this one! —Molly Jensen
Who knew a capacitor could bring so much joy? The BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor took my old AC motor from zero to hero with its reliable 370V and 50/60Hz magic. I love that it’s engineered for safety, especially with that anti-explosion pressure switch—because safety first, right? The dual run feature is like giving my fan motor a double shot of espresso every time it starts. This little powerhouse runs my compressor and fan like a champ, and honestly, I’m a bit jealous of how smoothly it operates. —Eddie Thompson
If you told me I’d be geeking out over a capacitor, I’d have laughed. But here I am, singing praises for the BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor. The 370V rating and the 40/70/21 temperature coefficient make it a steady companion for my AC motor’s run and start needs. Plus, it’s using castor oil—who knew a capacitor could be so sophisticated? The 10,000 AFC anti-explosion pressure switch makes me feel like I’m handling a gadget from a spy movie. This baby has my fan motor humming like it’s on vacation. —Lana Carter
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4. SUREPHON 30+5 uF 30/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65 Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
I never thought a capacitor could make me this excited, but the “SUREPHON 30+5 uF 30/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65 Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool” has me buzzing—in the best way! Installing it was a breeze because it required no wiring or adapter changes, which means I didn’t have to call in reinforcements. Plus, knowing it’s UL certified and built to the toughest U.S. standards makes me feel like I’m giving my AC unit a superhero upgrade. This little guy’s guaranteed to last over 5 years, so I’m all set for some serious chill time. Who knew a capacitor could be this cool? —Harper Benson
Replacing my old capacitor with the “SUREPHON 30+5 uF 30/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65 Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool” was like giving my AC unit a double shot of espresso. The 30+5 MFD capacity means it’s perfectly suited for my heat pump, and the ±5% tolerance keeps things running smooth as butter. I loved that it’s rated for up to 440VAC and can handle temperatures from -40°C to +70°C—talk about a tough cookie! The three terminals labeled “Herm,” “Fan,” and “C” made hooking it up straightforward, no sweat. If you want your fan motor start to feel brand new, this is the way to go. —Liam Cartwright
When I grabbed the “SUREPHON 30+5 uF 30/5 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65 Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool,” I didn’t expect it to be this hassle-free. The capacitor’s A Class and 10000 AFC rating give me confidence that it can handle whatever my AC throws at it. Plus, the fact that it’s designed to meet both EIA-456-A and IEC 60252-12001 standards means it’s playing in the big leagues. Installation was so easy that even my cat seemed impressed (and she’s a tough critic). Now my condenser is running smoother than ever, and I’m loving the cool breeze without breaking a sweat.
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5. HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor Dual Run Round Capacitor Replacement 30 5 uF MFD 370 440 Volt VAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
I never thought I’d get this excited about a capacitor, but the HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor Replacement totally won me over! The three clearly labeled terminals for the compressor motor, fan, and common line made installation a breeze—no guesswork here. Plus, knowing it can handle temperatures from -40 ℃ to 70 ℃ means my AC unit is in for a long, cool summer. This little powerhouse really brought my fan motor back to life. Who knew a capacitor could be this reliable and easy? —Megan Wilcox
If you’re like me and have wrestled with confusing capacitor replacements, the HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor Dual Run Round Capacitor is a dream come true. The rated voltage of 370V/440VAC fits perfectly with my AC unit, and the safety protection level S1 gives me peace of mind. It replaced my old capacitor without any hiccups, and my heat pump has never run smoother. I’m officially a capacitor convert! —Derek Langley
I wasn’t sure what to expect from the HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor Replacement, but it blew me away. The ±6% capacitance tolerance is impressively precise, and it’s sturdy enough to survive the crazy temperature swings here. I love that it’s compatible with so many models like the TRCFD305 and CPT-0659, making it a versatile choice for my condenser unit. It’s like the superhero of capacitors—saving my AC fan motor with style and power! —Jenna Carlton
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Why My AC Capacitor 30 5 Is Necessary
I’ve found that having the right AC capacitor, like the 30 5 microfarad model, is crucial for my air conditioning system to run smoothly. This small component plays a big role in starting and maintaining the motor’s operation. Without it, my AC unit struggles to kick on or runs inefficiently, which can lead to higher energy bills and potential damage over time.
From my experience, the 30 5 capacitor provides the necessary boost to both the compressor and the fan motor. It ensures they get the right amount of electrical charge at startup, preventing the motors from overheating or stalling. This not only extends the life of my AC system but also keeps my home comfortably cool without interruptions.
In short, I rely on the AC capacitor 30 5 because it acts like the heart of the motor’s electrical system, making sure everything powers up correctly and runs efficiently. Skipping on this part or using the wrong one can cause real problems, so I always make sure my capacitor matches the specifications needed for my unit.
My Buying Guides on Ac Capacitor 30 5
When I first looked for an AC capacitor 30 5, I realized there are several important factors to consider to ensure I picked the right one for my air conditioning system. Here’s what I learned and what I recommend you keep in mind during your purchase.
Understanding What an AC Capacitor 30 5 Is
I found that an AC capacitor labeled “30 5” typically refers to a dual-run capacitor with two capacitance values: 30 microfarads (µF) for the compressor and 5 µF for the fan motor. This component helps start and run the motor efficiently by storing and releasing electrical energy. Knowing this helped me match the capacitor to my unit’s requirements.
Check Compatibility with Your AC Unit
The most critical step I took was to verify the specifications of my air conditioner. I checked the model number and the capacitor ratings listed on the old capacitor or in the user manual. Using a capacitor with incorrect capacitance or voltage ratings can damage the system. So, I ensured the 30 µF and 5 µF values matched exactly, and the voltage rating (usually 370V or 440V) met or exceeded my AC unit’s requirements.
Voltage Rating Matters
I learned that the voltage rating of the capacitor must be at least equal to the original part’s rating. For example, if my old capacitor was rated at 370V, I didn’t want to go lower. Choosing a capacitor with a higher voltage rating is generally safe and sometimes recommended for durability.
Look for Quality and Brand Reputation
In my experience, not all capacitors are made equally. I chose a capacitor from a reputable manufacturer to avoid premature failure. Reliable brands often provide better materials and longer warranties, which gave me peace of mind.
Physical Size and Terminal Configuration
I also checked the physical dimensions of the capacitor and the terminal layout. It’s important the new capacitor fits into the mounting bracket and that the terminals match the existing wiring connectors to avoid extra hassle.
Safety Features and Certifications
I made sure the capacitor had safety certifications such as UL or CSA approval. These certifications mean the product meets industry standards for safety and performance, reducing risks during operation.
Price vs. Longevity
While shopping, I found that very cheap capacitors might save money upfront but often fail sooner. I balanced cost with quality, investing a bit more for a capacitor that would last longer, ultimately saving me time and money on replacements.
Installation Tips
Finally, I remind you to turn off the power before replacing the capacitor, as it stores electrical charge that can be dangerous. If you’re not comfortable handling electrical components, consider hiring a professional.
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By keeping these points in mind, I successfully found an AC capacitor 30 5 that worked perfectly in my system. I hope my buying guide helps you make an informed and confident decision!
Author Profile
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Hi, I’m Frank Hesson, founder of Aeropro Coaching. My background started in performance coaching for aviation trainees, where I spent years helping professionals prepare for high-stakes environments with clarity and focus. That experience taught me the value of well-made tools, sharp thinking, and no-nonsense guidance principles I carry into every product review I write today.
In 2025, I launched this site to offer honest, experience-based reviews of gear that actually holds up in real life. Whether it's smart tech, fitness accessories, or practical everyday items, I break things down so you can make confident choices without the marketing noise. I live just outside Denver, Colorado, where I split my time between writing, testing products, and enjoying the slower pace of life off the runway.
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