Trane SFCAP45D5440R Dual Run Capacitor 45+5 MFD 370/440V

Trane SFCAP45D5440R is a dual run capacitor rated 45+5 MFD at 370/440V AC, built in a round metal can with fluid-filled construction for stable operation under continuous duty. It provides the starting and running torque needed for compressor and fan motors in split systems, heat pumps, package units, furnaces, and air handlers used in residential and commercial applications. Failure symptoms this part addresses include compressor not starting, fan motor not running, capacitor bulging or leaking, system short cycling, and weak cooling or heating performance. This is an OEM replacement capacitor manufactured for Trane equipment, made in the USA and backed by a 5-year warranty. Installation is DIY-friendly for technicians familiar with basic electrical work; a capacitor wrench, multimeter, and mounting strap are recommended for proper testing and mounting. Confirm existing capacitor ratings and terminal configuration before replacement to ensure correct fitment on the intended Trane system.