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⚡ Power your motors like a pro — dual-capacitor efficiency meets industrial-grade durability!
The BOJACK 45+5 µF dual run circular start capacitor is a high-performance, compact solution designed for AC motors in air conditioners, heat pumps, and fans. Featuring a robust 370V/440VAC rating, ±6% tolerance, and a wide operating temperature range (-40°C to +70°C), it combines two capacitors into one unit with clearly labeled terminals for easy installation. Its metal shell and metallized polypropylene dielectric ensure durability and safety, making it a top choice for professional-grade motor startups and replacements.
| Asin | B07S8KJYQL |
| Best Sellers Rank | #1,048 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #3 in Industrial Electrical Capacitors |
| Brand Name | BOJACK |
| Capacitance | 45 microfarad |
| Capacitance Tolerance | 6 |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,837) 4.7 out of 5 stars |
| Item Dimensions W X H | 2.56"W x 3.74"H |
| Item Shape | Round |
| Manufacturer | BOJACK |
| Material Type | Polypropylene |
| Maximum Storage Temperature | 70 °C |
| Maximum Voltage | 440 volts |
| Model | BJ-CAP5 |
| Mounting Type | Through-Hole Mount |
| Number Of Items | 1 |
| Operating Voltage | 440 volts |
| Part Number | BJ-CAP5 |
| Unit Count | 1 Count |
| Upc | 768894138574 |
| Upper Temperature Rating | 158 °F |
User
Quick and easy fix
My AC unit started to hum, fan wasn't spinning and then it would turn off. My capacitor wasn't bulging on top but for a possible $20 fix, I took my chances and replaced it. Came in next day and within ten minutes, the outdoor AC unit working like new. Thank you!
User
It's right, it fits, and it works like it should.
My AC was blowing warm air, and it was 105 degrees out, not even counting the heat index. I figured the capacitor was the problem again, since it seems to go out every two or three years. After testing the old one, I just replaced it. Now the AC is working great and blowing cold air. It was an easy fix, and the new part fit perfectly. I saved some money by doing it myself.
User
Affordable and easy to install
This worked like a charm. Our ac went out when it was 90 degrees for days., this came fast and was easy to install and we were back up and running in no time
User
Great value for a DIY central a/c repair
My central A/C unit suddenly stopped working during a heatwave, and I quickly came across this for a replacement after comparing symptoms to a faulty capacitor. The capacitor is sturdy and seemingly well built. Repairing my unit with this was very simple, and in less than 10 minutes, my A/C unit was working again. It has been holding strong for over a year now, and the value for this was huge. I saved so much money compared to calling in a technician for repairs.If my central a/c unit’s capacitor runs into any problems, I will have no problems coming back to this one.
User
Working perfectly
Worked in my condenser unit and seems to be holding up in the Texas heat. It’s a little bit lighter weight than the original but exactly the same size and rating, etc. My AC quit at 5pm Sunday and Amazon was able deliver this new Bojack run cap before dawn Monday morning and I got it in and the AC working well before the heat of the day set in. I would give it five stars, but time needs to pass first because I have had less than great luck with Chinese made capacitors and appliance parts in the past, but so far really good.
User
Form/Fit perfect replacement to reactivate AC blowing hot air
Many of the reviews identify a very short life compared to other capacitors. That may prove to be the case, however it brought my AC immediately back to life so solid start for now. This unit was a form/fit perfect replacement, and the color coding of the fan and hermetic terminals was helpful and a nice feature that other capacitors don't have.
User
Easy to install and extremely reliable
If you live in Texas you need to either learn to change your own AC capacitor's or become best friends with your HVAC guy. Fortunately, I always keep two of the BoJack capacitor's on hand and can switch them out fairly quickly. These are the most consistent capacitor's I've ever used and I can almost always get them for under $20. If you have high AC use, save yourself some time and stress by keeping these on hand and saving yourself a $200+ AC service call.
User
Excellent
Bought this as HVAC maintenance said i needed to replace this part. They would charge me over $570 to put it in and the part. I decided to try to do this myself. The part fit perfectly and works perfectly. Save yourself some money buy this and do it yourselfold part below and the replacement part in images
User
Fits perfectly like the original capacitor
AC died in the middle of heat wave and I was able to open up the AC service panel to look for the original part code/serial number. Upon searching in Amazon this capacitor brand came up first from the search. Matches the original specs and size. Install was a breeze and make sure to disconnect your AC fuse first and discharge the capacitor so you don’t get a shock of your life 😁 highly recommended this product and very reasonable price.
User
Great product
Works great, saved me a ton of money changing this myself. Fixed my AC unit. Ran perfect for the rest of the summer. Recommend this product.
User
Saved a few hundred dollars by allowing me to fix my AC unit on my own!
Clearly labelled, and slightly shorter/smaller than the one that came in my Goodman unit - So it should fit in almost any Air conditioner with these 45+5 uf Spec. Terminals fit snugly without requiring excessive force - and immediately, my 7 year old Goodman A/C Unit started working.Basically, If your A/C FAN motor (Fan doesn't spin or has trouble starting) or Compressor (If you don't hear buzzing and get no cooling despite the fans spinning) This is most likely the fix.Its an easy DIY fix, and can save you a few hundred dollars in service calls.Turn your Furnace/AC to OFF. Pull the breaker for the AC Unit (usually outside the house, near the AC unit)Take off the side panelBridge each contact to the Ground with a plastic handled metal screwdriver (while ensuring you're ONLY touching plastic!) to discharge this (its a big battery - it CAN and WILL zap you if you don't discharge it first, while BREAKER IS OFF/REMOVEDRemove the bracket screw, Take a picture. Move wires to the new capacitor. Confirm with picture you've got it all right. (Be careful, you can fry things if you put the wrong wire to the wrong terminal) Re-install, and you'll be the coolest person in town.The picture is of my old capacitor - but the new one looks pretty much the same. I included it to show you its just 4 wires and a very cheap/easy DIY fix!
User
works well
Bought this capacitor to replace one that had blown on my exterior AC unit. Worked well with no issues at all. Very impressed with the price and quality of the unit.
User
Saved me hundreds on an AC service call—incredibly easy to install!
If your central AC unit suddenly stopped blowing cold air, or if the condenser is just humming but the fan won't spin, there is a very good chance your dual run capacitor has failed. I bought this BOJACK 45+5 uF capacitor to replace my blown one, and I couldn't be happier.
Trustpilot
2 months ago
2 days ago