87332233445 - FHP - Bosch OEM Compressor — an OEM compressor for FHP/Bosch water-source heat pumps. The most common single point of failure on an aging unit, and the most consequential part to get exactly right: refrigerant type, voltage/phase, and displacement all have to match your original compressor. A locked, grounded, or non-starting compressor (confirmed with a megohm and amp-draw check) is the usual reason for replacement — verify against your unit's data plate and, if in doubt, call us with the model and serial number before ordering. FHP and Bosch reused component footprints across several series and tonnages, so always confirm this part number against your unit's data plate before ordering — our FHP/Bosch model family guide and serial & model number decoder can help you identify exactly what you have. Genuine OEM part, in stock and ready to ship.