

⚡ Power your A/C like a pro — never sweat a breakdown again!
The PowerWell 45+5 MFD dual run capacitor is engineered for high-performance air conditioners and heat pumps, combining two capacitors into one compact, round design. Rated for 440 volts and built to rigorous USA standards, it ensures reliable motor starts and long-lasting operation across extreme temperatures. With a 5-year guarantee and compatibility with numerous OEM parts, it’s the smart, durable upgrade every professional needs to avoid costly downtime.
| ASIN | B01NAZJYWA |
| Best Sellers Rank | #5,900 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Industrial Electrical Capacitors |
| Brand Name | PowerWell |
| Capacitance | 45 Microfarad |
| Capacitance Tolerance | 5 |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,414) |
| EU Spare Part Availability Duration | 5 Years |
| Item Dimensions W x H | 2.38"W x 4"H |
| Item Shape | Round |
| Manufacturer | PowerWell |
| Material Type | Copper |
| Maximum Storage Temperature | 75 Degrees Celsius |
| Maximum Voltage | 440 Volts |
| Mounting Type | Snap-In Mount |
| Operating Voltage | 440 Volts |
| UPC | 714833366249 |
| Upper Temperature Rating | 70 Degrees Celsius |
R**L
Easy to install these
Fixed our air conditioner in 5 minutes would have cost us hundreds very easy to install, just take a picture of the unit and compare, it’s okay if it’s bigger than original part
L**D
Good purchase.
Worked as described. I keep a couple of these on hand because they seem to go out at the most inconvenient time. Easy swap to get the AC unit back up and running. I would recommend.
J**N
Made my AC unit run!
Great capacitor at a very good price!
D**.
Great
Still works years after installation
J**3
Failed in just over a year. Replaced by seller under warranty.
I purchased this in May 2023 to have on hand as a spare. It was installed in May 2024 when the original capacitor on my AC unit failed. I bought another of the same to have on hand. This unit worked fine until it failed on August 28 2025, so just over a year after install. I put the other on and we’ll see how long it lasts. I’ve messaged the seller about a warranty claim. Will update or edit once I see how that goes. Update: Seller promptly sent me a replacement under warranty. Changed my rating to 4 star for good customer service. Although it didn’t last as long as it should have the seller stands by its product.
D**D
Duel run capacitor replacement
Simple install working as expected I Replaced the original with a cheaper one that only lasted me 5 months so I am hoping that the extra money spent will pay off .
G**O
Time will tell
Bought for a spare . My current PowerWell is about 5 years old and still working . I like that it is the correct diameter for my ac unit.
J**.
Quality capacitor, exact replacement for original
The symptom I had was that the fan on the outdoor unit was not running. I had read that the most common cause of problems was the capacitor, and removing the cover, I could see that the top of the capacitor was badly corroded and bulging (sign of a bad capacitor) and there was even a mouse skeleton there. I entered the number from the capacitor in the unit and this is one that came up. This product was an exact fit for the A/C capacitor (size, number of terminals, capacitance and voltage rating), so no futzing with getting it to stay in place. When replacing, it is useful to remove the old one, leaving the wires connected (make sure you have the power turned off and discharge the old capacitor before starting). I had to clean my old capacitor top to see the labels for the terminals. Once I did that, I removed one wire at a time and connected it to the new capacitor. For one of the wires, I had to replace the wire connector (it was corroded and almost disconnected), but other than that it was an easy replacement. I started up the A/C and it ran, I put all of the covers back and was done.
T**C
Installé depuis plus de 12 mois et ce condensateur fonctionne très bien
M**I
Very happy with this purchase
M**E
Operational, same as shown in the description
D**C
Worked perfectly and easy to install
A**R
Exactly as described in description and picture, quick shipping as well
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