---
product_id: 82587360
title: "45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool"
brand: "the hvac genius"
price: "¥6921"
currency: JPY
in_stock: true
reviews_count: 8
category: "The Hvac Genius"
url: https://www.desertcart.jp/products/82587360-45-5-uf-45-5-mfd-370v-440v-dual-run
store_origin: JP
region: Japan
---

# 45+5 µF dual capacitance 370/440V high voltage rating -40℃ to +70℃ wide temp range 45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool

**Brand:** the hvac genius
**Price:** ¥6921
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your cool with precision and reliability!

## Quick Answers

- **What is this?** 45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool by the hvac genius
- **How much does it cost?** ¥6921 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/82587360-45-5-uf-45-5-mfd-370v-440v-dual-run)

## Best For

- the hvac genius enthusiasts

## Why This Product

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

## Key Features

- • **Trusted HVAC Essential:** Compatible with top AC brands and models for hassle-free maintenance
- • **Built to Brave Extremes:** Operates reliably from freezing -40℃ to scorching +70℃ environments
- • **Plug & Play Replacement:** Direct fit with labeled terminals—no rewiring or adapters needed
- • **Dual Capacitance Powerhouse:** 45+5 µF run capacitor supports both compressor & fan motors seamlessly
- • **Universal Voltage Compatibility:** Rated for 370V and 440V systems—upgrade without compromise

## Overview

The HVAC Genius 45+5 uF dual run capacitor is engineered for high-performance air conditioning and heat pump systems, offering a robust 370/440V rating and a wide operating temperature range from -40℃ to +70℃. Its direct replacement design with clearly labeled terminals ensures effortless installation, making it the go-to choice for professionals seeking dependable motor start support and long-lasting durability.

## Description

A capacitor is an electric component that temporarily stores an electrical charge. A "run capacitor" supports electric motors, such as in air conditioner or heat pump units, a fan motor and a compressor motor. The capacitor has two terminals. Capacitors come in a variety of sizes, depending on the capacitance (µF or MFD), such as 40 plus 5 µF, and also the voltage. A 440 volt capacitor can be used in place of a 370 volt, as it is build better, but the 370 can’t be used in place of a 440 volt. It will work for a while and will fail prematurely, as exceeding the capacitor's rated voltage will cause the dielectric to break down and the capacitor to short out. Same as an electric wire- 600V rated wire is better than 300V one .The capacitance(µF or MFD) must be the same or stay within 10%+ or 5%- of its original value . Example: 50 µF cap can be substituted by 47.5 to 55 µF with the same or better voltage ratings capacitor . Round oval-shaped run capacitors are commonly used for air conditioning, to help in the starting of the compressor and the condenser fan motor.

Review: So far so good replacing my Carrier's capacitor - Have a 10 yr old carrier ac only unit, died after a short power outage. Troubleshooting pointed to a capacitor problem (compressor started, but fan couldnt get going, but manually pushing it with a screwdriver got it spinning). This capacitor was an exact fit to my old one's size (a Castor oil model) so no need to mess with the bracket. So far its working well! And 1 day delivery was great, didnt have to wait in August Virginia heat.
Review: Great replacement so far - I installed this capacitor in our a/c two days ago, and it is working fine so far. It is a direct replacement in all ratings and terminal locations. I had already replaced the original capacitor with separate 45uf and 5uf capacitors a few years ago, so I can't speak to the exact size and mounting clamp being the same or different as the original. This unit was easy to mount and is secure using the mounting clamp I made. One common reason for failure of this type of capacitor is power line fluctuations. That can occur if the power shuts off unexpectedly (e.g. storm), from lightning nearby, power spikes, and other types of power problems that cause voltage instability. Over time, the capacitor's performance will degrade until it fails. This is true of all polymer capacitors, not just the one from this supplier. I keep a spare capacitor because of the occasional power fluctuations we have in our area. I will be ordering a second capacitor from this supplier so I still have a spare.

## Features

- The HVAC Genius 45+5 uF ±5% 370/440 VAC CBB65 dual run start capacitor replacement for BOTH 370 & 440 Volt capacitors.
- 45/5 MFD Capacitor size measures ( 2 inches / 51mm ) in Diameter x ( 4.38 inches / 111mm ) in Height.
- Operating temperature: -40℃ to +70℃/-104℉ to +158℉. Frequency: 50/60 Hz.
- 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.
- 45/5 uF Capacitor Replacement for 97F9895 , Z97F995 , 97F9895BZ3 , 27L880 , TRCD455 , TRCFD455 , PRCFD455 , 27L889 , 97F9851 , 97F9851S , 12788 , RC0114 , Z97F9895 , 97F9895 , TT-CAP-45/5/440R , HC98KA046 , TP-CAP-45/5/440R , CAP050450440RT , HC98JA046 , HCKS450D050R440Z , 00662441180262.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F2S59XF |
| Best Sellers Rank | #285,800 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,160 in Industrial Electrical Capacitors |
| Capacitance Tolerance | 6 |
| Date First Available | June 27, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.8 ounces |
| Item model number | 45-5 MFD Round |
| Manufacturer | The HVAC Genius |
| Maximum Voltage | 440 Volts |
| Mounting Type | Through-Hole Mount |
| Operating Voltage | 440 Volts |
| Product Dimensions | 2.46"W x 4.41"H |
| UPC | 850002496024 817506023163 |
| Upper Temperature Rating | 85 Degrees Celsius |

## Product Details

- **Brand:** The HVAC Genius
- **Capacitance:** 45 Microfarad
- **Material:** Aluminum
- **Maximum Storage Temperature:** 85 Degrees Celsius
- **Shape:** Round

## Images

![45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool - Image 1](https://m.media-amazon.com/images/I/31AKyFaNHnL.jpg)
![45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool - Image 2](https://m.media-amazon.com/images/I/31ZVKfk3XVL.jpg)
![45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool - Image 3](https://m.media-amazon.com/images/I/411w9RAD+3L.jpg)
![45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool - Image 4](https://m.media-amazon.com/images/I/41eQYfmQgRL.jpg)
![45/5 uF 45+5 MFD 370V/440V Dual Run Start Round AC CBB65B Capacitor 45 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool - Image 5](https://m.media-amazon.com/images/I/41ezNnIAqYL.jpg)

## Questions & Answers

**Q: Original had 3 wires coming from the capac instead of three labeled spade connectors. two red, one brown. brown to b, 1 red to c. any wiring help?**
A: What I did was had label facing me. And I removed one wire at a time matching each move

**Q: My furnace makes a big hum when starting the blower motor. Could the problem be a weak capacitor?**
A: Only if it has a weak one. These are normally found at A/C compressors.

**Q: Product description says 45+5 mfd, picture shows 50+5 mfd. which is it?**
A: 45

**Q: Can i replace my old capacitor wilspec ca370-05v with this. it's 5micron f +-5% ?**
A: Yes should work fine

## Customer Reviews

### ⭐⭐⭐⭐⭐ So far so good replacing my Carrier's capacitor
*by P***P on August 22, 2023*

Have a 10 yr old carrier ac only unit, died after a short power outage. Troubleshooting pointed to a capacitor problem (compressor started, but fan couldnt get going, but manually pushing it with a screwdriver got it spinning). This capacitor was an exact fit to my old one's size (a Castor oil model) so no need to mess with the bracket. So far its working well! And 1 day delivery was great, didnt have to wait in August Virginia heat.

### ⭐⭐⭐⭐⭐ Great replacement so far
*by R***R on July 15, 2022*

I installed this capacitor in our a/c two days ago, and it is working fine so far. It is a direct replacement in all ratings and terminal locations. I had already replaced the original capacitor with separate 45uf and 5uf capacitors a few years ago, so I can't speak to the exact size and mounting clamp being the same or different as the original. This unit was easy to mount and is secure using the mounting clamp I made. One common reason for failure of this type of capacitor is power line fluctuations. That can occur if the power shuts off unexpectedly (e.g. storm), from lightning nearby, power spikes, and other types of power problems that cause voltage instability. Over time, the capacitor's performance will degrade until it fails. This is true of all polymer capacitors, not just the one from this supplier. I keep a spare capacitor because of the occasional power fluctuations we have in our area. I will be ordering a second capacitor from this supplier so I still have a spare.

### ⭐⭐⭐⭐⭐ Well.. it's a capacitor.
*by A***A on July 22, 2024*

Works as it should. I did a preemptive replacement on my outside A/C fan last Fall. It's been working fine, specially considering how hot the Summer has been this year (2024). Yah I would buy again.

## Frequently Bought Together

- The HVAC Genius 45+5 uf MFD 370/440 Volt Dual Run Round Capacitor 45/5/440R for HVAC, Air conditioners, Pool Pumps, and Furnaces
- VEXUNGA AC Capacitor 45+5 uF 45/5 MFD 370 or 440 or 450 VAC CBB65B Dual Run Start Capacitors for Air Conditioner Compacitor Motor or Compressor Fan or Condenser Straight Cool
- The HVAC Genius 35/5 uF 35+5 MFD 370V/440V Dual Run Start Round AC Capacitor 35 5 uF 370/440 Volt VAC Air Conditioner Capacitor for AC Unit Fan Motor Start, Heat Pump, Condenser Straight Cool

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*