Trane SFCAP45D75440R Dual Run Capacitor 45/7.5 MFD 370/440V

Trane SFCAP45D75440R is a dual run capacitor rated 45+7.5 MFD at 370/440V AC, housed in a fluid-filled metal can measuring 1.75" W x 2.8" H. It provides the starting and running boost required by compressor and condenser fan motors in split systems, heat pumps, package units, air handlers, and furnaces. As an OEM replacement part manufactured in the USA, it carries a 5-year warranty and is built to line-voltage specifications for residential and light commercial applications. This capacitor is intended for use in Trane equipment as a direct OEM replacement. Symptoms indicating a failed capacitor include a unit that won't start, weak cooling, a compressor that hums but doesn't run, a motor running slowly, or visible bulging or leaking on the can. Installation is DIY-friendly; techs should discharge the old capacitor safely and confirm MFD and voltage ratings match before wiring in the replacement. A multimeter, discharge tool, capacitor wrench, and mounting strap are recommended for a proper installation.