Description
40/5 uF 370V Dual Run Capacitor — OEM HVAC Replacement
This 40/5 uF 370V dual run capacitor is a direct OEM replacement for AC compressors and condenser fan motors requiring a 40/5 uF rating. Commonly used in 2.5–4 ton residential central air conditioning systems from brands including Carrier, Trane, Lennox, Rheem, Goodman, and York.
Specifications
| Spec | Value |
|---|---|
| Capacitance | 40/5 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 | 2.5–4 ton residential AC systems |
Frequently Asked Questions
Look at the label on your existing capacitor — it will show the uF rating (e.g., 40/5) and voltage (e.g., 370V or 440V). Match both values. The capacitor is usually located in the electrical compartment of the outdoor condenser unit, behind the access panel.
Using a capacitor with the wrong uF rating can cause the motor to run hot, draw excess current, or fail to start. Always match the uF rating exactly. Using a higher voltage rating (e.g., 440V instead of 370V) is safe, but using a lower voltage rating is not.
Capacitor replacement is one of the most common DIY HVAC repairs. The part is inexpensive and the replacement is straightforward. However, capacitors store a dangerous electrical charge — always discharge the capacitor with an insulated resistor before handling, and turn off power at the disconnect box first.
Related Products: 35/5 uF 370V Dual Run Capacitor | 45/5 uF 370V Dual Run Capacitor
