EverGrow 45+5 MFD Dual Run Capacitor vs EverGrow 45+5 uF Dual Run Capacitor

These are near-identical EverGrow dual run capacitors: same 45/5 uF rating, same 370/440 V rating, same EIA-456 60,000-hour metallized polypropylene construction, and the same OEM cross-reference list. The main practical difference is that the B listing states a ±6% capacitance tolerance and names the CBB65 case standard, while the A listing gives only the model number PW-45/5/R. For most shoppers either works; pick B if you want the tolerance and case standard spelled out, and pick A if your existing label matches the PW-45/5/R part number. Owners of both report the usual capacitor experience: they work fine when they match the original, and the round dual-run form fits most condenser and heat pump cabinets.

• Choose the EverGrow PW-45/5/R if your old capacitor's label or your HVAC parts list names that exact model, so you are matching a known part number.
• Choose the EverGrow 45+5 uF CBB65 if you want the ±6% tolerance and case standard stated on the listing before you buy.