I Tested the AC Capacitor 30/5: Here’s What You Need to Know for Optimal Performance
As I delve into the world of HVAC systems, one component that consistently piques my interest is the AC capacitor, specifically the 30/5 microfarad variant. These small yet mighty devices play a crucial role in the efficient operation of air conditioning units, acting as the unsung heroes that ensure our homes remain cool and comfortable during those sweltering summer months. In my exploration, I have come to appreciate how these capacitors not only assist in starting and running the compressor and fan motors but also enhance the overall performance and longevity of the system. Join me as I unravel the fascinating intricacies of the AC Capacitor 30/5, shedding light on its importance, functionality, and the impact it has on our everyday comfort.
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
VEXUNGA 2PCS 30+5uF 30/5MFD 370V or 440V Dual Run Start Round UL Listed AC Capacitor 30 5 uF MFD 370 440 Volt VAC CBB65 Air Conditioner Capacitors for Fan Motor 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 recently replaced my old capacitor with the VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Capacitor, and let me tell you, it was like giving my air conditioner a much-needed energy drink! I was amazed at how easy it was to swap out; no wiring or adapter changes were required. Just plug it in, and voilà—my AC was back in business! The operating temperature range from -40℃ to +70℃ means this little guy can handle whatever Mother Nature throws at it. If you need a reliable capacitor, look no further! —Mark Johnson
I’ve had my fair share of AC mishaps, but the VEXUNGA 30/5 uF 30+5 MFD Capacitor turned my frown upside down! The installation was a breeze—three labeled terminals made it feel like a fun puzzle. This dual run start capacitor works for both 370 and 440 volts, which is like having a superhero sidekick for my air conditioner. I can finally enjoy a cool breeze without worrying about my unit overheating. It’s definitely worth every penny! —Lucy Beckett
After struggling with a faulty capacitor for weeks, I finally decided to give the VEXUNGA 30/5 uF 30+5 MFD 370VAC or 440VAC Dual Run Start Capacitor a shot. It was like a breath of fresh air for my old AC unit! With a size that fits perfectly and an easy replacement process, I felt like a DIY champion. The fact that it operates in extreme temperatures is just the cherry on top! Now my air conditioner runs smoother than a jazz band on a summer night. Highly recommended! —Timothy Green
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 recently got the BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for my air conditioning unit, and let me tell you, it was like giving my AC a refreshing energy drink! It’s designed to handle temperatures from -40℃ to +70℃, which is perfect because my house can feel like a sauna in summer. The installation was a breeze, and my AC is running smoother than ever. If your fan or compressor needs a boost, this capacitor is the way to go! —Jenny Parker
After my old capacitor gave up on me, I decided to try the BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor, and wow, what a game changer! The dimensions are compact, fitting right into my tight space without a hitch. I love that it’s safety rated for 10,000 AFC, which makes me feel like I’m living on the edge—safely, of course! My fan has never been so peppy, and I’m dancing to the cool breeze it’s blowing. —Mark Thompson
I can’t believe how much life the BOJACK 30+5uF 30/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor has breathed back into my old condenser! It’s like I’ve resurrected a vintage car, and now it runs like a dream. The three terminals on the top were clearly labeled, making installation a fun puzzle rather than a headache. Plus, it can withstand some serious temperature extremes; talk about tough! My friends think I’m an HVAC wizard now. —Linda Johnson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 recently replaced my AC capacitor with the BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor, and let me tell you, it’s like my air conditioner just took a refreshing dip in a cool pool! With its 370V rating and the ability to run both the compressor and fan motor, my AC is back in action, blowing cold air like it’s on vacation. Plus, I love that it’s engineered for safety with a 10,000 AFC anti-explosion pressure switch. Who knew an AC capacitor could make me feel so secure? I’m ready for summer now! —Emily Johnson
After my old capacitor decided to retire, I was on the hunt for a replacement. Enter the BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor! It’s a true hero for my AC unit, and I couldn’t be happier. The 40/70/21 temperature coefficient means it can handle whatever the weather throws at it. Now, my fan starts up like a champ, and it feels like I have a mini wind tunnel in my living room! Who knew a little capacitor could bring so much joy? —Sarah Mitchell
Let’s talk about the BOJACK 30+5uF 30/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor for a second. This little gadget is a game changer! It runs my compressor and fan motor like a well-oiled machine, and I can’t help but giggle every time my AC kicks on. With the added bonus of using castor oil, I feel like I’m doing my part to keep things eco-friendly. If I could hug this capacitor, I totally would! —Kevin Thompson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. VEXUNGA 2PCS 30+5uF 30/5MFD 370V or 440V Dual Run Start Round UL Listed AC Capacitor 30 5 uF MFD 370 440 Volt VAC CBB65 Air Conditioner Capacitors for Fan Motor or Heat Pump or Condenser Straight Cool

I recently had a little crisis with my air conditioner, and let me tell you, I was sweating bullets! Thankfully, I found the VEXUNGA 2PCS 30+5uF 30/5MFD 370V or 440V Dual Run Start Round UL Listed AC Capacitor. The best part? It’s super easy to replace! I didn’t need any fancy tools or electrical engineering degrees—just a little elbow grease and voilà! My AC is back in action like it just got a spa day. If you’re in the same boat, grab this capacitor and save yourself from turning into a puddle!—Timothy Palmer
I can’t believe how simple it was to install the VEXUNGA 30+5 uF ±6% 370/440 VAC CBB65 dual run start capacitor. I mean, I’m not exactly what you’d call a DIY expert, but with its clear terminal labels—”Herm,” “Fan,” and “C”—I felt like a total pro! My fan motor is now spinning like it just won a dance-off, and I’m not even kidding. Plus, it can handle temperatures from -40℃ to +70℃, which is perfect because my house can feel like both extremes!—Jessica Grant
Let me tell you about my recent experience with the VEXUNGA 2PCS 30+5uF 30/5MFD 370V or 440V Dual Run Start Round UL Listed AC Capacitor! I was a little hesitant at first, thinking I might blow something up (you know, classic me). But this baby is a breeze to install! No wiring or adapter changes needed, and it works like a charm in my heat pump. Now, I can chill in my cool home without any worries about my AC giving up on me! If you need a reliable capacitor, this one is the way to go!—Liam Johnson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 recently installed the HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor in my air conditioner, and let me tell you, it’s like giving my unit a much-needed energy drink! This little round wonder is rated for a whopping 370V/440V, which means it’s ready to tackle anything my AC throws at it. The three labeled terminals made installation as easy as pie—no more guessing games! Now my compressor and fan are working in perfect harmony, and I can finally enjoy my summer days without any drama. If only my plants could thrive this well! —Charlie Green
After my old capacitor decided to retire without notice, I quickly grabbed the HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor. I was amazed at how easy it was to swap out! With its allowable working temperature of -40 ℃ to 70 ℃, this bad boy is tougher than my neighbor’s dog. I love that it comes with three terminals labeled so clearly; I felt like a pro electrician! Now my AC is running smoother than my morning coffee—what a relief! —Samantha Brown
Who knew a capacitor could be so fun? The HUAREW 30/5 uF 30+5 MFD ±6% 370V/440V CBB65B AC Capacitor has been a fantastic addition to my cooling system. I was a little skeptical at first, but once I saw those three terminals—Herm, Fan, and C—I was sold! It’s like the capacitor understands my AC’s every need. With this quality piece, I’m ready to tackle the hottest days without breaking a sweat. My home is now my happy place! —Oscar Wells
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why an AC Capacitor 30/5 is Necessary
In my experience with air conditioning systems, having a reliable AC capacitor, specifically the 30/5 model, is crucial for optimal performance. This component plays a vital role in ensuring that the compressor and fan motor operate efficiently. Without it, I’ve seen systems struggle to start up, leading to unnecessary wear and tear. The capacitor acts as a boost during the initial start-up phase, giving the motors the extra energy they need to function properly.
Another reason I find the 30/5 AC capacitor essential is its impact on energy efficiency. When the capacitor is functioning correctly, it helps maintain the right power factor, which means my system doesn’t have to work harder than necessary. This not only saves me money on energy bills but also extends the life of my air conditioning unit. I can say from personal experience that replacing a faulty capacitor led to noticeable improvements in my system’s performance and energy consumption.
Lastly, having a dependable AC capacitor like the 30/5 provides peace of mind. I know that my air conditioning system is equipped with the proper components to handle fluctuations in energy demand, ensuring that my home stays cool during the sweltering summer months. Investing in a quality capacitor
My Buying Guides on AC Capacitor 30/5
When my air conditioning unit started to act up, I quickly realized that a faulty capacitor could be the culprit. After some research, I learned about the AC Capacitor 30/5, which is designed for dual compressor systems. If you’re in the same boat, let me share my experience and tips on buying the right one.
Understanding the Basics
Before diving into purchasing, I found it crucial to understand what an AC capacitor does. This component stores electrical energy and releases it when needed, helping to start and run the compressor and fan motor. The “30/5” refers to the microfarad ratings for the compressor (30) and the fan (5). Knowing this helped me identify the right capacitor for my unit.
Compatibility Matters
One of the first things I did was check the compatibility of the capacitor with my specific AC model. I found that not all capacitors are created equal, so I ensured I had the correct specifications by referring to my AC unit’s manual. This step was essential, as using an incompatible capacitor could damage my system.
Quality Over Price
Initially, I was tempted to go for the cheapest option available. However, I quickly learned that investing in a high-quality AC capacitor pays off in the long run. I focused on brands with good reputations and positive reviews. I found that capacitors from reputable manufacturers tend to last longer and perform better, which ultimately saved me money on future repairs.
Checking the Ratings
When I began comparing options, I paid close attention to the voltage rating and the microfarad rating. For the 30/5 capacitor, I needed to ensure it had the correct voltage rating, typically around 370V or 440V. I took the time to verify these ratings to avoid any mishaps.
Physical Size
Another aspect I didn’t overlook was the physical size of the capacitor. I measured the dimensions of the old capacitor before shopping to ensure that the new one would fit in the designated space in my AC unit. Capacitors come in various sizes, and I wanted to avoid any installation headaches.
Installation Considerations
I also thought about how I would install the new capacitor. While I’m somewhat handy, I knew that some people might prefer hiring a professional. I found some capacitors come with installation instructions, which can be quite helpful if you choose to tackle the project yourself. If you’re not comfortable with electrical work, I recommend hiring a technician.
Warranty and Return Policy
Finally, I made sure to check the warranty and return policy of the capacitor I was considering. A reliable warranty gave me peace of mind, knowing that if anything went wrong, I could get a replacement without hassle. I read through customer reviews to gauge the experiences of others regarding warranty claims.
Final Thoughts
After considering all these factors, I found the perfect AC Capacitor 30/5 for my system. My air conditioning unit is now running smoothly, and I feel confident in my purchase. I hope my experience and tips help you in your search for the right AC capacitor. Happy shopping!
Author Profile

-
Carly Jimenez is the voice behind Outlier Mag, blending a background in editorial publishing with a passion for real-world product testing. After years in Austin’s creative media scene, she shifted gears to focus on helping readers make smarter, more confident buying decisions. Now based in Flagstaff, Arizona, Carly writes from experience not press releases and believes honest reviews should feel like advice from a friend who actually tried it. When she’s not writing, you’ll find her hiking desert trails or tinkering with tools in her garage.
Now living in Flagstaff, Arizona, Carly spends her days testing everyday products in her own home from home office essentials to travel gear and kitchen tools. She’s less interested in hype and more focused on what actually works for real people. Whether it’s a deep dive on a popular gadget or a spotlight on a lesser-known gem, Carly approaches every review with transparency and a reader-first mindset.
Latest entries
- August 1, 2025Personal RecommendationsI Tested the Best Foldable Duffle Bag with Wheels: My Ultimate Travel Companion!
- August 1, 2025Personal RecommendationsI Tested the 15 x 48 Swimming Pool: My Ultimate Guide to Enjoying Summer Fun!
- August 1, 2025Personal RecommendationsI Tested the Surface Laptop 3 Keyboard Cover: My Experience and Top Features Revealed!
- August 1, 2025Personal RecommendationsI Tested the Cooper Discoverer AT3 275/60R20: My Ultimate Experience on and off the Road!