BOJACK 45+5uF Dual Run Circular Start Capacitor 370V/440V - Reliable

In this review of the BOJACK 45+5uF dual run circular start capacitor, the bottom line is simple: this is a straightforward replacement capacitor for central air conditioners, heat pumps, condensers, and compressor or fan motors that need a combined compressor and fan solution. The reviewer found the unit useful for HVAC repair and maintenance because it combines a 45 uF compressor winding cap with a 5 uF fan winding cap in one compact metal shell, rated for 370V/440V operation and built for industrial temperatures. For technicians and DIYers who need a rugged, small-footprint replacement, this capacitor delivers predictable motor start and run performance.

Key Features

• Dual run design: Provides combined 45+5uF values so one component can power both compressor and fan circuits for easier replacement in HVAC systems.
• Wide voltage rating: Rated at 370V/440V AC so it fits a range of central air and condenser applications that require higher system voltages.
• Compact metal shell: The circular CBB65B metal housing with 65 mm diameter and 95 mm height saves space and fits into many OEM mounting arrangements.
• Temperature tolerance: Operates from -40 C to +70 C, making it suitable for both cold storage and hot machinery rooms without derating.
• Safety rating: 10,000 AFC safety rating provides a level of overcurrent protection expected in industrial grade capacitors.
• Multiple terminal labels: Clearly labeled Herm/H, Fan/F and C terminals simplify wiring during replacement and reduce installation errors.

Who It's For

This capacitor is aimed at HVAC technicians, maintenance teams, and experienced DIYers who replace start/run capacitors on air conditioners, heat pumps, and condenser fan motors. Its dual values make it especially useful when both compressor and fan need matching capacitance in a single unit and when the installer prefers the convenience of three labeled terminals.

Less appropriate for casual users who lack electrical safety training, or for equipment that specifies a different capacitance or a non-metal shell style; if an application requires a different tolerance, different form factor, or a manufacturer-specific OEM part number, those buyers should verify compatibility first.

Pros & Cons

Pros

• Combined 45+5uF values reduce parts and simplify replacement in dual-motor HVAC systems.
• Wide operating temperature range and metal shell support durable performance in industrial environments.
• Clear Herm, Fan and Common terminal labeling makes wiring straightforward and reduces installation time.

Cons

• Not suited for users unfamiliar with HVAC electrical safety and wiring; installation requires basic electrical skills.
• The universal model may not match every OEM mounting clip or bracket exactly, so mechanical fit should be checked.

Specifications

Model	CBB65B dual run circular
Capacity	45+5 uF
Tolerance	6%
Rated voltage	370V/440V AC
Frequency	50/60 Hz
Dimensions	Diameter 65 mm (2.56 in) x Height 95 mm (3.74 in)
Operating temp	-40 C to +70 C (-104 F to +158 F)

Our Verdict

The BOJACK 45+5uF dual run capacitor is a practical, value-minded replacement for HVAC technicians and maintenance professionals who need a compact dual-value capacitor with clear terminal labeling and broad temperature and voltage ratings. It is reliable for common central air and condenser motor start applications, though buyers should confirm mechanical fit and have the electrical skills to install it safely.

Frequently Asked Questions

Can this capacitor replace separate compressor and fan capacitors?
Yes, it is designed as a dual run unit with 45 uF for the compressor and 5 uF for the fan, intended to replace combined applications where the system accepts a dual capacitor.

What terminals are provided?
The top has three labeled terminals: Herm or H for the compressor, Fan or F for the fan motor, and C for the common line to simplify wiring.

Is it suitable for outdoor condenser use?
Yes, the metal shell and operating range from -40 C to +70 C make it appropriate for many outdoor condenser and heat pump environments, but verify mounting and enclosure protection per your equipment.