Rectorseal M12018 Oval Run Capacitor 35 Mfd 370V

Product Description

The RECTORSEAL M12018 is a 35 microfarad (MFD), 370-volt oval run capacitor designed to support continuous motor operation in HVAC equipment. Run capacitors maintain a steady phase shift in single-phase motors, providing the torque needed to keep compressor and fan motors running efficiently throughout the cooling or heating cycle. The M12018 measures 1.806 inches wide by 2.806 inches long by 3.5 inches tall, making it a compact oval form factor suited for tight equipment cabinets. Licensed HVAC technicians install this component during routine capacitor replacement or as part of a no-start, hard-start, or weak-run motor diagnosis.

This capacitor is appropriate for residential and light commercial HVAC applications where a 35 MFD, 370-volt oval run capacitor is specified. Typical installations include single-phase condenser fan motors and compressor circuits in split-system air conditioners and heat pumps. It fits in standard capacitor brackets designed for oval-style housings and is a common replacement item during peak cooling season service calls.

Key Features

• 35 MFD capacitance rating for consistent motor phase support
• 370-volt rating suitable for standard single-phase residential HVAC circuits
• Oval housing at 1.806 x 2.806 x 3.5 inches fits common capacitor mounting brackets
• Run capacitor design for continuous-duty motor operation, not start-only service
• Compact form factor supports installation in space-constrained condenser units

Compatibility

Designed as an OEM-style replacement run capacitor for single-phase residential and light commercial HVAC systems requiring a 35 MFD, 370-volt oval capacitor.

Installation Notes

Capacitor replacement is performed by licensed HVAC technicians. Always disconnect and lock out power to the unit before handling capacitors, as they retain a lethal charge even after power is removed — discharge the capacitor through a resistor before touching terminals. Verify the replacement MFD and voltage ratings match the equipment nameplate before installation. Follow NEC and local electrical code requirements for disconnect and wiring practices.

Technical Specifications

• Capacitance: 35 MFD
• Voltage Rating: 370 volts
• Housing Style: Oval
• Width: 1.806 inches
• Length: 2.806 inches
• Height: 3.5 inches
• UPC: 685744120186

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M12018