---
product_id: 703396337
title: "VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor"
brand: "vexunga"
price: "$97.94"
currency: USD
in_stock: true
reviews_count: 5
category: "Vexunga"
url: https://www.desertcart.us/products/703396337-vexunga-40-5uf-40-5-mfd-370vac-or-440vac-dual
store_origin: US
region: United States of America
---

# 40+5 µF dual capacitance Direct drop-in replacement -40℃ to +70℃ operating temp VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor

**Brand:** vexunga
**Price:** $97.94
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your A/C like a pro—dual run, dual voltage, zero hassle!

## Quick Answers

- **What is this?** VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor by vexunga
- **How much does it cost?** $97.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/703396337-vexunga-40-5uf-40-5-mfd-370vac-or-440vac-dual)

## Best For

- vexunga enthusiasts

## Why This Product

- Trusted vexunga brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Rated for 60,000 hours with 94% survival—reliable performance you can count on
- • **Dual Power Boost:** Supports both compressor & fan motors with a single compact unit
- • **Effortless Upgrade:** Super easy to replace with labeled terminals—no rewiring or adapters required
- • **Compact & Heat-Resistant:** Small aluminum case designed to withstand extreme temps from -40℃ to +70℃
- • **Universal Voltage Compatibility:** Works seamlessly with 370VAC and 440VAC systems—no guesswork needed

## Overview

The VEXUNGA 40+5 µF dual run capacitor is a high-performance, universal replacement designed for both 370VAC and 440VAC air conditioning systems. Featuring a durable metallized polypropylene film dielectric and an unpainted aluminum case, it operates reliably across a wide temperature range (-40℃ to +70℃) and supports both compressor and fan motors simultaneously. With a long lifespan of 60,000 hours and easy installation via clearly labeled terminals, this compact capacitor is the smart choice for efficient, hassle-free HVAC maintenance.

## Description

This capacitor is used for start-up and operation of AC motors, such as Motor Run or Heat Pump Air Conditioner or Condenser Straight Cool.It is small in size, lightweight, heat resisting and anti-explosion. Model: CBB65 (Universal model). Case Material: unpainted aluminum case. Dielectric material: metallized polypropylene film. Available Capacitance: 40+5uf. Capacitance Tolerance: ±6%. Operating temperature: -40℃ to +70℃/-104℉ to +158℉. Frequency: 50/60Hz Operating Life:60,000 hours with 94% survival. Dissipation factor: 0.1% maximum. A VEXUNGA ac capacitor can be used in place of a 370 volt capacitor and a 440 volt capacitor. A capacitor is an electric component that temporarily stores an electrical charge. A dual "run capacitor" supports two electric motors, such as in large air conditioner or heat pump units, with both a fan motor and a compressor motor. It saves space by combining two physical capacitors into one case. The dual capacitor has three terminals labeled "C", "FAN", and "HERM", "Herm"/"H" for the compressor motor, "Fan"/"F" for the fan, and "C" for the common line.

Review: Easy fix that most home owners could do - Watched a YouTube video of the most common Central Air not working fixes. I went out and checked mine as it has not worked a couple of years. Sure enough, the main fan was working, but touching the compressor tube, you could feel it pulling every second or so, but not starting. Removing the old part and measuring it, the fan side was good and the compressor side was bad. Watch some YouTube videos if you dont know how to do that. It's not difficult. Anyways, after kicking myself in the butt for 5 minutes straight, I ordered a replacement here on desertcart. Product arrived fine and appears to be a well built part. Steps to replace it: 1)To start, most units have an outdoor circuit breaker you can pull to de-energize the unit. Pull that and/or flip the switch for the CA unit in your main fuse box. Next, remove the side access port on the outside unit, usually just two screws to get access to where the starter cap and relays are. 2)Checked the old cap to make sure it was de-energized (Very important step!!!). Do not touch those wires if it's still energized! If the unit is truely powered down and you still measure voltage on the old cap, you may need to discharge the old cap. Remember though, there are TWO caps in one and you need to discharge BOTH. If either still has a charge, they could give you a serious bite. Not to scare you away from doing it, you just have to be safe. 3)Marked the color of the wires and where they plugged into on the old cap. Note:Take a couple of pictures of the old cap and what wire goes where on it. This can be good to reference later! 4)Unplugged all the wires from the old cap and loosened the strap holding it in, and removed it. 5)Fit the new cap in under the strap, tighten it down but not so tight that it could dent the new cap, and plugged the wires into the new cap in the same positions as the old cap. Note: In most cases, the compressor will plug into the terminal stamped HERM. The fan goes to Fan if stamped. There are often two wires that were on the same terminal on the old cap, and that is the common. Plug all the wires in and DOUBLE CHECK you did it right. Take a picture of the old one at the start if you're not sure. 6)Put the side access cover back on the unit. 7)Reinstall the circuit breaker. Set the thermostat to turn it on and hopefully you have nice cool air blowing in a few minutes! 8)Especially if this fixes it, a very important step is to order a second cap!!! Then you dont have to wait long if it goes out. These get stressed every time the fan or compressor turns on. They do go bad eventually, so just have a backup ready. You will hopefully get a good 3-5 years out of the cap. In the attached picture, the temp was 78, now 71. Spouse and kids are happy. Therefore. I am happy.
Review: good buy dependable - worked perfectly ac back up and running

## Features

- VEXUNGA 40+5 uF ±6% 370/440 VAC CBB65 dual run start capacitor replacement for BOTH 370 & 440 Volt capacitors.
- 40/5 MFD Capacitor size measures ( 2.36inch / 60mm ) in Diameter x ( 3.35inch / 85mm ) in Height.
- Operating temperature: -40℃ to +70℃/-104℉ to +158℉. Frequency: 50/60Hz
- SUPER EASY to Replace: Direct replacement, No wiring or adapter changes required. AC Capacitor has three terminals on the top are labeled "Herm" for the compressor motor, "Fan" for the fan, and "C" for the common line.
- 40/5 uF Capacitor Replacement for 97F9838 , Z97F938 , 97F9838BZ3 , 12786 , RC0108 , 97F9849 , C3DR405 , Z97F9848BZ2 , P291-4054 RS RS RS C34 05R, HCKS400D050R440Z, P291-4053RS, TT-CAP-40/5/440R, TRCFD405, TP-CAP-40/5/440R, HC98JA041, HC98CA040, HC98CA041, HC98CA041, HCHC93CZ035

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | VEXUNGA |
| Manufacturer | VEXUNGA |
| Country of Origin | USA |
| Model number | 40+5 uF Capacitor |
| Number of Memory Sticks | 1 |
| Item Weight | 272 g |
| Product Dimensions | 5.99 x 5.99 x 8.51 cm; 272 g |
| Item model number | 40+5 uF Capacitor |
| Item Height | 3.35 Inches |
| Item Width | 2.36 Inches |
| Included Components | capacitor |
| Are batteries included? | No |

## Product Details

- **Brand:** VEXUNGA
- **Shape:** Round
- **Operating Voltage:** 440 Volts (AC)
- **Mounting Type:** Through-Hole Mount
- **Manufacturer:** VEXUNGA

## Images

![VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor - Image 1](https://m.media-amazon.com/images/I/61LbT2PLuSL.jpg)
![VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor - Image 2](https://m.media-amazon.com/images/I/618T2MSmJdL.jpg)
![VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor - Image 3](https://m.media-amazon.com/images/I/61TjDmCDg5L.jpg)
![VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor - Image 4](https://m.media-amazon.com/images/I/81qEW-dqY7L.jpg)
![VEXUNGA 40/5uF 40+5 MFD 370VAC or 440VAC Dual Run Start Round A/C Capacitor - Image 5](https://m.media-amazon.com/images/I/61cWUCsndXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy fix that most home owners could do
*by E***E on 27 June 2025*

Watched a YouTube video of the most common Central Air not working fixes. I went out and checked mine as it has not worked a couple of years. Sure enough, the main fan was working, but touching the compressor tube, you could feel it pulling every second or so, but not starting. Removing the old part and measuring it, the fan side was good and the compressor side was bad. Watch some YouTube videos if you dont know how to do that. It's not difficult. Anyways, after kicking myself in the butt for 5 minutes straight, I ordered a replacement here on Amazon. Product arrived fine and appears to be a well built part. Steps to replace it: 1)To start, most units have an outdoor circuit breaker you can pull to de-energize the unit. Pull that and/or flip the switch for the CA unit in your main fuse box. Next, remove the side access port on the outside unit, usually just two screws to get access to where the starter cap and relays are. 2)Checked the old cap to make sure it was de-energized (Very important step!!!). Do not touch those wires if it's still energized! If the unit is truely powered down and you still measure voltage on the old cap, you may need to discharge the old cap. Remember though, there are TWO caps in one and you need to discharge BOTH. If either still has a charge, they could give you a serious bite. Not to scare you away from doing it, you just have to be safe. 3)Marked the color of the wires and where they plugged into on the old cap. Note:Take a couple of pictures of the old cap and what wire goes where on it. This can be good to reference later! 4)Unplugged all the wires from the old cap and loosened the strap holding it in, and removed it. 5)Fit the new cap in under the strap, tighten it down but not so tight that it could dent the new cap, and plugged the wires into the new cap in the same positions as the old cap. Note: In most cases, the compressor will plug into the terminal stamped HERM. The fan goes to Fan if stamped. There are often two wires that were on the same terminal on the old cap, and that is the common. Plug all the wires in and DOUBLE CHECK you did it right. Take a picture of the old one at the start if you're not sure. 6)Put the side access cover back on the unit. 7)Reinstall the circuit breaker. Set the thermostat to turn it on and hopefully you have nice cool air blowing in a few minutes! 8)Especially if this fixes it, a very important step is to order a second cap!!! Then you dont have to wait long if it goes out. These get stressed every time the fan or compressor turns on. They do go bad eventually, so just have a backup ready. You will hopefully get a good 3-5 years out of the cap. In the attached picture, the temp was 78, now 71. Spouse and kids are happy. Therefore. I am happy.

### ⭐⭐⭐⭐⭐ good buy dependable
*by O***S on 1 June 2026*

worked perfectly ac back up and running

### ⭐⭐⭐⭐⭐ Continual Good operation for my Air conditioning
*by M***. on 17 June 2026*

Bought capacitor May of 2025. Installed in my Airconditioning Compressor seems to be working great.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-04*