10 Best Ac Capacitor 2026 in the United States
#1
Winner
VEXUNGA 7.5uF 370/440VAC 50/60Hz CBB65 CBB65A Oval Run Start Capacitor 7.5 MFD 370V/440V Air Conditioner Capacitors for AC Unit Fan Motor Start or Pool Pump or Air Condenser Straight Cool
The VEXUNGA 7.5uF 370/440VAC capacitor is designed for air conditioner units, pool pumps, and air condensers. It offers a capacitance of 7.5 microfarads and supports both 370V and 440V, making it versatile for different AC units. The capacitor is an oval shape, measuring 2.17 x 2.17 x 2.03 inches and weighs 3.21 ounces. Made of polypropylene and aluminum, it promises durability and reliability.
Rating
10.0
Chosen by1,466
Capacitance (µF)
Type (Run or Start)
Most important from
433 reviews
#2
BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
The BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor is a versatile component designed for AC motors, fans, and condensers. One of its main strengths is its dual run capability, making it suitable for both motor run and fan start applications. The capacitance of 35+5 microfarads ensures it can handle a range of power requirements, while the voltage rating of up to 440V offers robust performance for most residential and commercial HVAC systems.
Rating
9.7
Capacitance (µF)
Type (Run or Start)
Shape and Size
Most important from
2401 reviews
#3
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
The BOJACK 45+5 uF 370V/440V CBB65 Dual Run Circular Start Capacitor is a versatile option that can be used for AC motor run, fan start, or condenser applications. With a capacitance of 45+5 µF and a voltage rating of 370V/440VAC, this capacitor is designed to handle a range of applications. The dual run feature is beneficial for those needing a start and run capacitor in one, simplifying installation and reducing the need for multiple components.
Rating
9.4
Capacitance (µF)
Voltage Rating (V)
Brand and Quality
Most important from
3766 reviews
Top 10 Best Ac Capacitor 2026 in the United States
#1
Winner
VEXUNGA 7.5uF 370/440VAC 50/60Hz CBB65 CBB65A Oval Run Start Capacitor 7.5 MFD 370V/440V Air Conditioner Capacitors for AC Unit Fan Motor Start or Pool Pump or Air Condenser Straight Cool
VEXUNGA 7.5uF 370/440VAC 50/60Hz CBB65 CBB65A Oval Run Start Capacitor 7.5 MFD 370V/440V Air Conditioner Capacitors for AC Unit Fan Motor Start or Pool Pump or Air Condenser Straight Cool
Capacitance (µF): 7.5 Microfarad
Voltage Rating (V): 370/440V
Shape and Size: Oval, 2.17 x 2.17 x 2.03
Temperature Rating: -40℃ to +70℃
Brand and Quality: VEXUNGA
Chosen by 1466 this week
BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
Capacitance (µF): 35+5
Voltage Rating (V): 370V/440V
Type (Run or Start): Dual Run
Shape and Size: Round, Diameter <1.97 inch
Temperature Rating: -40℃ to +70℃
Brand and Quality: BOJACK
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
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
Capacitance (µF): 45+5
Voltage Rating (V): 370V/440VAC
Type (Run or Start): Dual Run
Shape and Size: Round, 65 mm diameter, 95 mm
Temperature Rating: -40℃ to +70℃
Brand and Quality: BOJACK
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
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
Capacitance (µF): 45+5 µF
Voltage Rating (V): 370V to 440VAC
Type (Run or Start): dual run and start
Shape and Size: Round, 2.5in diameter, 4in tall
Temperature Rating: -40℃ to +70℃
Brand and Quality: QYCKFIXR
SUREPHON 45+10 uF 45/10 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
SUREPHON 45+10 uF 45/10 MFD ±5% 370V/440VAC Dual Run Start Capacitor CBB65B Works for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool
Capacitance (µF): 45+10
Voltage Rating (V): 370-440
Type (Run or Start): dual run/start
Shape and Size: Round, 2.5" dia x 4.13" height
Temperature Rating: -40°C to 70°C
Brand and Quality: SUREPHON, UL certified, meets standards
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[UL Certified] BlueStars 270-324 uF MFD 110-125 VAC Round Motor Start Capacitor 50/60 Hz AC Electric Replacement Part for AC Motors Starting or Pool Pump or Well Pump
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Capacitance (µF): 270-324 µF
Voltage Rating (V): 110-125V
Type (Run or Start): Start
Shape and Size: Round, 36mm x 70mm
Temperature Rating: -40℃ to 65℃
Brand and Quality: Blue Stars, high-quality aluminum
BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
Capacitance (µF): 40+5
Voltage Rating (V): 370V/440V
Type (Run or Start): Run
Shape and Size: Round, 2.36in diameter, 3.55in height
Temperature Rating: -40℃ to +70℃
Brand and Quality: BOJACK
[UL Listed] BlueStars 189-227 uF MFD 220-250 VAC Volts Round Start Capacitor 50/60 Hz AC Electric - Lot -1 - for Electric Motor, OEM Single Phase Motor Capacitors - Lifetime Up to 30.000 Hours
[UL Listed] BlueStars 189-227 uF MFD 220-250 VAC Volts Round Start Capacitor 50/60 Hz AC Electric - Lot -1 - for Electric Motor, OEM Single Phase Motor Capacitors - Lifetime Up to 30.000 Hours
Capacitance (µF): 189-227
Voltage Rating (V): 220-250
Type (Run or Start): Start
Shape and Size: Round, 1.4 x 3.4 inches
Temperature Rating: -40°F to 149°F
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BOJACK 70+5uF 70/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight Cool or Heat Pump air Conditioner
BOJACK 70+5uF 70/5MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight Cool or Heat Pump air Conditioner
Capacitance (µF): 70+5
Voltage Rating (V): 370V/440V
Type (Run or Start): Dual Run
Shape and Size: Cylindrical, 2.56 x 4.92 inches
Temperature Rating: -40℃ to +70℃
Brand and Quality: BOJACK
#10
BOJACK 45+5uF 45/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
BOJACK 45+5uF 45/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
Capacitance (µF): 45+5
Voltage Rating (V): 370
Type (Run or Start): dual run
Shape and Size: Round, 1.97"W x 3.74"H
Temperature Rating: -40°C to 70°C
Brand and Quality: BOJACK
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Buying Guide for the Best Ac Capacitor
When choosing an AC capacitor, it's important to understand the role it plays in your air conditioning system. The capacitor stores and releases electrical energy to help start and run the compressor and fan motor. Selecting the right capacitor ensures your AC unit operates efficiently and reliably. Here are the key specifications to consider when picking an AC capacitor and how to navigate them to find the best fit for your needs.Capacitance (µF)Capacitance, measured in microfarads (µF), indicates the amount of electrical charge the capacitor can store. This is crucial because the correct capacitance ensures your AC unit's motor starts and runs properly. Capacitors typically range from 5 µF to 80 µF. To choose the right capacitance, check the specifications of your AC unit or the old capacitor. Using a capacitor with the wrong capacitance can lead to inefficient operation or damage to the motor.
Voltage Rating (V)The voltage rating of a capacitor indicates the maximum voltage it can handle. This is important to ensure the capacitor can withstand the electrical load of your AC unit. Common voltage ratings are 370V and 440V. It's generally safe to use a capacitor with a higher voltage rating than required, but never use one with a lower rating. Check your AC unit's specifications or the old capacitor to determine the correct voltage rating.
Type (Run or Start)There are two main types of AC capacitors: run capacitors and start capacitors. Run capacitors are used to maintain a constant charge to the motor while it's running, while start capacitors provide a boost of energy to start the motor. Run capacitors are typically rated for continuous duty, while start capacitors are rated for short-term use. Determine which type your AC unit requires by consulting the unit's specifications or the old capacitor.
Shape and SizeAC capacitors come in various shapes and sizes, including round and oval. The physical size and shape are important to ensure the capacitor fits in the designated space within your AC unit. Measure the dimensions of the old capacitor or the space where it will be installed to ensure a proper fit. While the shape doesn't affect performance, it must match the space available in your unit.
Temperature RatingThe temperature rating of a capacitor indicates the range of temperatures it can safely operate within. This is important for ensuring reliable performance in different environmental conditions. Capacitors typically have a temperature rating of -40°C to +70°C or higher. Choose a capacitor with a temperature rating that matches or exceeds the conditions in which your AC unit will operate, especially if you live in an area with extreme temperatures.
Brand and QualityThe brand and quality of the capacitor can affect its reliability and lifespan. High-quality capacitors from reputable brands are more likely to provide consistent performance and last longer. Research different brands and read reviews to find a reliable capacitor. While it might be tempting to choose a cheaper option, investing in a high-quality capacitor can save you from future repairs and replacements.