![[UL Listed] BlueStars 45+10 uF 45/10 MFD 370 V or 440 VAC Dual Capacitor](https://m.media-amazon.com/images/I/71ZTSfzjfBL._AC_SL3840_.jpg)






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⚡ Power your comfort with UL-certified reliability — don’t let your AC miss a beat!
The BlueStars 45+10 µF dual run capacitor is a premium, UL-listed replacement part designed for air conditioners, heat pumps, and fan motors. It supports both 370V and 440V systems, features a durable round design, and meets stringent US and Australian safety standards. With easy installation and lifetime protection, it offers a cost-effective, reliable solution to keep your cooling systems running smoothly.













| ASIN | B0B24X8VDN |
| Best Sellers Rank | #1,344 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Industrial Electrical Capacitors |
| Brand | BlueStars |
| Brand Name | BlueStars |
| Capacitance | 45 microfarad |
| Capacitance Tolerance | 5 |
| Customer Reviews | 4.3 out of 5 stars 71 Reviews |
| Included Components | 45+10 MFD 370-440 VAC CBB65 Capacitor |
| Item Dimensions W x H | 2.36"W x 4.72"H |
| Item Highlight | for Air Conditioner Unit Fan Motor Start or Condenser or Heat Pump |
| Item Shape | Round |
| Manufacturer | BlueStars |
| Material | 45+10 MFD 370-440VAC |
| Material Type | 45+10 MFD 370-440VAC |
| Maximum Storage Temperature | 70 °C |
| Maximum Voltage | 440 volts |
| Model | 45+10 uf 370-440VAC |
| Mounting Type | Through-Hole Mount |
| Number of Items | 1 |
| Operating Voltage | 440 volts |
| Part Number | 45+10 uf 370-440VAC |
| Shape | Round |
| Upper Temperature Rating | 70 °C |
P**N
Solid capacitor and still going strong.
I ordered this capacitor as a replacement for my Lennox AC unit, and it worked exactly as expected. It was as per specs, and when I tested it with my multimeter, the readings were well within the stated ±5% tolerance. The installation was straightforward, make sure to cut power first and double-check the wiring labels (C, Fan, and Herm are clearly marked). Once installed, my AC started right up without any issues, and it’s been running smoothly since past 2 months. It’s built to UL and CE standards, and the terminals and casing feel solid and durable. For the price, it’s a fraction of what a local HVAC company would charge just to replace a capacitor. I was quoted 350 with the final offer of $280. Overall, this is a quality, no-nonsense replacement part that does exactly what it’s supposed to. Highly recommended.
D**L
Funcionó perfectamente
Reemplazo perfecto. Fácil de instalar, encajó sin problemas y el aire acondicionado volvió a funcionar de inmediato. Buena calidad y excelente relación calidad-precio. Lo recomiendo.
R**M
Works great!
works great!
P**E
Out of spec out of the box.
Arrived new, but out of spec and unusable. Bought a 45/10 and it arrived labeled as such, but when tested it was exactly a 45/5. Totally wrong.
C**O
Pics
HERM, FAN, and C all easily readable on top. Can't speak to longevity, but out of the box it meets specs according to my cheap multimeter. See pics.
D**R
Good part
Working fine now
R**R
Buy one now and use your working one as a backup!
Why wait for the inconvenience of having a capacitor fail and paying for a service call on a hot day? It won't take you 15 minutes to switch out the old functioning capacitor with this new one and have the backup in the garage. Cheap insurance.
B**E
Great product
Works how it should on my Ducune heat pump fan.
B**Y
work perfectly!
perfect!
Trustpilot
2 weeks ago
1 month ago