All the numbers match on my existing one (440 vac, 50/60 hz, +-6%), except for mine has the number 40uf/5uf instead of 45/5 ... will this one work?

A 55 Micro Farad cap will most likely run fine in your unit.. Capacitors work like batteries on start-up of the motor where extra electrical energy assists the unit in overcoming the latency of the motor to start. Capacitors charge at different times depending on capacity. Typically it uses 5 time constants for a capacitor to charge and discharge. All this means that a small cap will charge faster than a large one but means little to the user if they are not using it as some part of a timing circuit. The Booster Supco Cap adds extra energy on startup so the unit gets that extra electrical push. This is a very simplified answer to a somewhat lengthy Study of CAPs in EE courses and how they are used and work.

Where do I buy the wires to hook it up? I can't splice on the terminals myself

The wires are already on the condenser unit... If you have a separate capacitor for fan don't use that terminal or vice versa

would this fit C3455R?Thanks

No. PowerWell 45+5 is 2 3/8” Genteq C3455R is 2”

Dose it fit trane xl16i 4ttx6048?

If your your system issue is the compressor does not start once called and the fan does the you have a capacitor problem. Validate the capacitance in your system; 45uf for the compressor and 5uf for the fan then this product will work. The strap and connector is standard.

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45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years

45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years

Product ID: 42420079

Details

Brand
PowerWell
Capacitance
45 Microfarad
Material
Copper
Maximum Storage Temperature
75 Degrees
Shape
Round

⚡45+5 µF dual capacitance

🔋440V max operating voltage

🛡️5-year durability guarantee

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Details

Brand
PowerWell
Capacitance
45 Microfarad
Material
Copper

Description

⚡ Power your A/C like a pro — never sweat a breakdown again!

DUAL POWER BOOST - Supports both compressor & fan motors seamlessly
HASSLE FREE SWAP - Snap-in mount and direct replacement for multiple OEM part numbers
COMPACT DURABLE DESIGN - 2.38" diameter x 4" height fits most units, built to USA EIA-456-A standards
UNIVERSAL VOLTAGE UPGRADE - Replaces 370V & 440V capacitors with superior 440V rating
EXTREME TEMPERATURE RESILIENCE - Operates reliably from -40°C to +70°C for all climates

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.

Specifications

ASIN	B01NAZJYWA
Best Sellers Rank	#3,077 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Industrial Electrical Capacitors
Brand	PowerWell
Brand Name	PowerWell
Capacitance	45 Microfarad
Capacitance Tolerance	5
Customer Reviews	4.7 out of 5 stars 4,426 Reviews
EU Spare Part Availability Duration	5 Years
Item Dimensions W x H	2.38"W x 4"H
Item Shape	Round
Manufacturer	PowerWell
Material	Copper
Material Type	Copper
Maximum Storage Temperature	75 Degrees Celsius
Maximum Voltage	440 Volts
Model	PW-45/5/R
Mounting Type	Snap-In Mount
Operating Voltage	440 Volts
Part Number	PW-45/5/R
Shape	Round
UPC	714833366249
Upper Temperature Rating	70 Degrees Celsius

Reviews

S**H

18.04.2026

D**R

14.04.2026

R**L

27.01.2026

L**D

5.12.2025

J**3

29.08.2025

D**Y

23.04.2026

J**H

13.07.2020

E**7

27.06.2024

T**C

11.01.2026

B**Y

23.04.2026

D**C

11.06.2023

G**R

4.06.2022

M**I

22.10.2024

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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