Rectorseal M12218 Round Run Capacitor 35 Mfd 370V

Product Description

The RECTORSEAL M12218 is a round run capacitor rated at 35 microfarads (MFD) and 370 volts, designed to support the continuous operation of single-phase motors in HVAC equipment. Run capacitors maintain a phase shift in motor windings during normal operation, improving motor efficiency and torque. This unit ships in a round aluminum can housing and is sized for straightforward replacement in field service situations. Licensed HVAC technicians typically install this capacitor during compressor, condenser fan motor, or blower motor servicing on residential and light-commercial cooling and heat pump equipment.

The M12218 is well suited for condenser fan motors and compressor start-assist applications where a 35 MFD, 370-volt round capacitor is specified. Its compact round form factor fits standard capacitor brackets found in most residential condensing units and packaged systems. When the original capacitor shows signs of bulging, low capacitance on a meter, or fails a run-test, this unit serves as a direct replacement for same-rated components.

Key Features

• 35 MFD capacitance rating for consistent motor phase support
• 370-volt AC rating suitable for standard residential HVAC applications
• Round housing fits common single-bracket capacitor mounts
• Compact footprint: 1.75 inches diameter by 4.25 inches height
• Drop-in replacement for same-rated round run capacitors

Compatibility

Designed as an OEM-style replacement for residential and light-commercial HVAC systems requiring a 35 MFD, 370-volt round run capacitor for condenser fan motors or single-phase compressors.

Installation Notes

A licensed HVAC technician should perform capacitor replacement. Disconnect and lock out all power to the unit before opening the electrical compartment, and discharge the existing capacitor fully before handling it, as run capacitors can hold a lethal charge even after power is removed. Verify the replacement MFD and voltage rating match the nameplate of the original capacitor before installation. Work should comply with applicable NEC requirements and local electrical codes.

Technical Specifications

• Capacitance: 35 MFD
• Voltage Rating: 370 volts AC
• Housing Shape: Round
• Diameter: 1.75 inches
• Height: 4.25 inches
• UPC: 685744122180

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12218