Factory replacement capacitor for Enertech Global geothermal heat pumps, rated 40 MFD at 370 VAC. Per Enertech parts data it is the capacitor used in most 2.5 ton and 3 ton units.

Capacitors are a common wear item and a frequent cause of a compressor or motor that hums but will not start. Match the microfarad and voltage ratings exactly when replacing, and confirm the part number against the unit model and serial number.