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Quick specs
Capacitance
40 MFD
Type
Motor run capacitor
Voltage
370/440 VAC
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
TRADEPRO 40 MFD 370/440 VAC Oval Motor Run Capacitor TP-CAP-40/440-A
Single Run Capacitor·370/440 VAC Rated
$39.56
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
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TRADEPRO 40 MFD 370/440 VAC Oval Motor Run Capacitor TP-CAP-40/440-A
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$39.56
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Capacitance
40 MFD
Type
Motor run capacitor
Voltage
370/440 VAC
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
Reliable OEM-quality motor run capacitor designed for continuous-duty HVAC applications. This single-value oval capacitor delivers the phase-shift needed to keep blower motors, condenser fans, and similar motors running smoothly and efficiently.
Key Features
- 40 µF (MFD) capacitance with tight ±3% tolerance
- Dual voltage rating: 370/440 VAC
- Oval aluminum case for secure mounting in tight spaces
- 50/60 Hz operation
- Rigid aluminum construction with enhanced film technology (7 µm Mylar film, plastic cup support, and Nomex insulation sleeve) for improved durability and lower failure rates versus standard capacitors
- Protected to 10,000 AFC
- Meets EIA-456-A standards; UL Recognized and CSA approved
- Vacuum-sealed design to help prevent leaks and contamination
Benefits
- Helps restore proper motor torque and reduce issues like humming, slow starting, overheating, or failure to run
- Long service life of up to 60,000 hours at rated temperature for fewer callbacks and replacements
- Drop-in replacement that works in both 370 V and 440 V systems
- Compact oval shape fits common mounting brackets and tight equipment compartments
- Professional-grade reliability for residential and light commercial HVAC systems
Specifications
| Specification | Details |
|---|---|
| Capacitance | 40 MFD (µF) |
| Voltage | 370/440 VAC |
| Type | Single Run |
| Shape | Oval |
| Frequency | 50/60 Hz |
| Tolerance | ±3% |
| Operating Temperature | -40°F to 158°F (-40°C to 70°C) |
| Expected Life | 60,000 hours @ 70°C |
| Construction | Aluminum |
| Approvals | UL Recognized, CSA, EIA-456-A |
| Protection | 10,000 AFC |
| Country of Origin | China |
| Approximate Dimensions | 4.8″ L × 2.9″ W × 2.9″ H (overall length ~4″, diameter ~2″) |
| Weight | ~0.5 lb |
Compatibility
Compatible with a wide range of air conditioners, heat pumps, furnaces, air handlers, packaged units/RTUs, and central air systems that require a 40 MFD single run capacitor.
Commonly used as a replacement for parts including (but not limited to): S1-CAP44400F, 12045, C440L, 97F9641, 97F9641B, and 97F9641BX. Always verify the exact MFD rating, voltage, and physical fit of the original capacitor before installation. Shape primarily affects mounting; electrical ratings must match.
Note: Professional installation is recommended.
Key features
- Single Run Capacitor — 40 MFD rating
- 370/440 VAC Rated — works in either application
- Oval Aluminum Can — fits standard mounting brackets
- Reliable Motor Operation — for compressors and fan motors
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Specifications
Frequency 50/60 Hz
Shape Oval
Construction Aluminum
Tolerance ±3%
Operating Temp Range -40°F to 158°F (-40°C to 70°C)
Rated Life 60,000 hours @ 70°C
Dimensions (L x W x H) Approx. 4.8" x 2.9" x 2.9"
Weight ~0.5 lb
Approvals UL Recognized, CSA, EIA-456-A
Fault Protection 10,000 AFC
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
5 verified reviews
FB
Falcon B
I’m amazed by the 40 MFD 370 or 440 VAC Single Run Capacitor – Oval; it delivers exceptional performance at an unbeatable price! The quality of this equipment is outstanding, ensuring my system operates efficiently and reliably without any issues.
GT
Grayson T
The 40 MFD 370 or 440 VAC Single Run Capacitor in an oval shape brought my HVAC system back to life with stellar performance at an impressively low price. It was simple to install, and my air conditioner now runs like new, providing consistent and reliable cooling throughout my home.
TH
Travis H
I recently purchased the 40 MFD 370 or 440 VAC Single Run Capacitor – Oval, and I’m beyond excited about the unbeatable price, exceptional equipment, and stellar performance – an absolute steal that has exceeded all my expectations!
JG
James G
I recently purchased the 40 MFD 370 or 440 VAC Single Run Capacitor – Oval, and I’m thrilled with the exciting surprise of its excellent price for such a crucial component. The unbeatable affordability, coupled with the capacitor’s reliable performance, makes it an outstanding investment, ensuring optimal efficiency for my system at an unexpectedly great value.
B
Benjamin
The 40 MFD 370 or 440 VAC Single Run Capacitor – Oval is an electrical powerhouse that defies its size with exceptional performance, making it a must-have for any system seeking a boost in efficiency and reliability. Its impressive value for the price delivers an unbeatable combination of quality and affordability, setting a new standard for capacitor performance.
