Description
45/5 uF 370V Dual Run Capacitor — OEM HVAC Replacement
This 45/5 uF 370V dual run capacitor is a direct OEM replacement for AC compressors and condenser fan motors requiring a 45/5 uF rating. The 45 uF side powers the compressor while the 5 uF side powers the condenser fan motor. This is one of the most common capacitor sizes used in 3–5 ton residential central air conditioning systems.
Specifications
| Spec | Value |
|---|---|
| Capacitance | 45/5 uF (±6%) |
| Voltage Rating | 370V AC (also compatible with 440V systems) |
| Type | Dual Run (Compressor + Fan) |
| Shape | Round |
| Terminals | HERM, FAN, COM (3 terminals) |
| Temperature Rating | -40°F to +149°F (-40°C to +65°C) |
| Application | 3–5 ton residential and light commercial AC systems |
Frequently Asked Questions
Yes, if your existing capacitor is rated 45/5 uF at 370V. Always check the label on your existing capacitor before ordering. The brand of the AC system doesn't matter — what matters is matching the uF rating and voltage.
Yes. A 440V capacitor is safe to use in a 370V application. The higher voltage rating provides additional safety margin. Never use a lower voltage rating than what is specified on the original capacitor.
Run capacitors typically last 10–20 years, but heat and voltage stress can shorten their lifespan. In hot climates like Florida, Texas, and Arizona, capacitors may fail in 5–10 years. Annual HVAC maintenance should include capacitor testing.
Related Products: 35/5 uF 370V Dual Run Capacitor | 40/5 uF 370V Dual Run Capacitor
