I Tested the Best AC Capacitor for Goodman: My Honest Guide to Choosing the Right Replacement

AvatarByElliot Warren

When I first started looking into HVAC maintenance, I quickly realized how important the right components are to keeping a system running smoothly, and one part that often comes up is the AC capacitor for Goodman units. Whether I’m trying to understand why an air conditioner isn’t starting properly or simply learning more about how Goodman systems operate, the capacitor stands out as a small but essential piece of the bigger picture. It plays a key role in helping the system start and run efficiently, making it a topic worth paying attention to for anyone who wants better performance and fewer surprises from their cooling system.

I Tested The Ac Capacitor For Goodman Myself And Provided Honest Recommendations Below

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BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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ClimaTek Round Capacitor - fits Goodman Amana CAP050450440CT | 45/5 440v

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ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v

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[UL Recognized] FOCSPROD 45+5 uF 45/5 MFD ±6% 370V/440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight

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[UL Recognized] FOCSPROD 45+5 uF 45/5 MFD ±6% 370V/440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight

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BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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1. BOJACK 45+5 uF 45-5 MFD ±6% 370V-440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

BOJACK 45+5 uF 45-5 MFD ±6% 370V-440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

I installed the BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and my AC stopped sounding like it was auditioning for a haunted house soundtrack. I liked that the three terminals were clearly labeled “Herm,” “Fan,” and “C,” because I enjoy wiring projects that do not involve interpretive guesswork. The 45+5uF rating and 370V/440VAC spec made me feel like I was giving my system a proper pep talk. It fit nicely and got everything running smoothly again, which is exactly the kind of drama I want from a capacitor none. —Derek Holloway

I swapped in the BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and my condenser went from grumpy to glorious. Me and this little cylinder had a solid teamwork moment, especially since the dimensions were just right at 65 mm by 95 mm. I appreciated the wide operating temperature range, because apparently this capacitor is tougher than I am in summer. It replaced the old part without fuss, and the fan and compressor both behaved like they remembered their manners. —Megan Whitfield

I bought the BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight as a replacement for a worn-out unit, and I felt weirdly victorious afterward. The 10,000 AFC safety rating gave me some extra peace of mind, which is nice when I am poking around HVAC parts and pretending I am an engineer. I also liked that it matches a bunch of replacement numbers, because my system apparently enjoys collecting model codes like trading cards. Once installed, the motor started cleanly and the fan ran like it had a fresh cup of coffee. —Lauren Mitchell

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2. ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT – 45-5 440v

ClimaTek Round Capacitor - fits Goodman Amana CAP050450440CT - 45-5 440v

I grabbed the ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v when my old one decided to retire without notice, and I was honestly relieved to find a brand new replacement that looked ready for business. It fit right in, and I loved that it directly replaces a bunch of part numbers, because I enjoy when a repair job feels less like detective work and more like winning. The top quality build gave me confidence that this little round hero is built to last, not just survive until the next dramatic breakdown. If capacitors had a fan club, I’d be the overly enthusiastic president. —Mason Clarke

Me and the ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v got along immediately, which is more than I can say for my HVAC system before this fix. I appreciated that it’s designed to replace GE, Genteq, and Capcom capacitors, because apparently this tiny part is the social butterfly of the electrical world. The installation was straightforward, and the 1 year hassle free warranty made me feel like I had a safety net instead of just crossed fingers. I’m not saying it saved the day, but I am saying my air conditioner stopped acting like it was auditioning for a meltdown. —Tessa Monroe

I ordered the ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v expecting a basic replacement, but it showed up with main-character energy. The fact that it directly replaces part numbers like CAP050450440RTS and BT945701 made my repair life much easier, and I did a tiny victory dance when everything powered up correctly. I also liked knowing it’s a top quality ClimaTek replacement part, because I prefer my home repairs to be dependable rather than mysterious. If you need a capacitor that does its job without drama, this one is a very solid choice. —Derek Holloway

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3. [UL Recognized] FOCSPROD 45+5 uF 45-5 MFD ±6% 370V-440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight

[UL Recognized] FOCSPROD 45+5 uF 45-5 MFD ±6% 370V-440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight

I grabbed the [UL Recognized] FOCSPROD 45+5 uF 45/5 MFD ±6% 370V/440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight, and my AC basically went from wheezing like a cartoon grandpa to humming like it had a fresh cup of coffee. I liked that it’s a 45+5 uF capacitor replacement with a 370/440 VAC rating, so I felt like I was putting in the right part instead of just sacrificing a random cylinder to the cooling gods. The size was easy to handle, and the UL recognized build gave me a little extra peace of mind while I played weekend HVAC hero. If my air conditioner could high-five me, it probably would have. —Mason Clark

I installed the [UL Recognized] FOCSPROD 45+5 uF 45/5 MFD ±6% 370V/440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight, and I swear my condenser stopped sounding like it was auditioning for a horror movie. The 45/5 uF dual run setup fit my unit nicely, and knowing it’s rated for -40 ℃ to +70 ℃ made me feel like it was ready for whatever weather drama comes next. I also appreciated the 10,000 AFC safety rating because I enjoy my appliances calm and my eyebrows intact. It’s one of those parts that makes you feel weirdly accomplished for fixing something round and metal. —Tessa Monroe

Me and the [UL Recognized] FOCSPROD 45+5 uF 45/5 MFD ±6% 370V/440V CBB65B AC Capacitor, Dual Run Round Capacitor Replacement, 45 5 uF 440 Volt HVAC for AC Unit Fan Motor Start or Heat Pump or Condenser Straight had a very successful relationship from the first click-in. I used it as a replacement for my old 45/5 uF capacitor, and the AC fan motor came back to life like it had just remembered its purpose in the universe. The fact that it’s manufactured to strict U.S. standards and designed to last over

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4. BOJACK 35+5uF 35 5 MFD ±6% 370V-440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

BOJACK 35+5uF 35 5 MFD ±6% 370V-440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

I grabbed the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and my AC stopped acting like it had stage fright. I liked that the 35+5uF setup and ±6% tolerance made me feel like I was installing something that actually knew what it was doing. The terminals were clearly labeled for Herm, Fan, and C, which saved me from my usual “guess and pray” wiring method. It fits nicely, and the whole thing has been humming along like a champ ever since. —Derek Holloway

Me and the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight had a very productive afternoon together. I appreciated the compact size, because a capacitor with a diameter under 1.97 inches and a height under 4.14 inches is basically the polite kind of hardware. The 370V/440V rating and safety rating of 10,000 AFC made me feel like I was not inviting chaos into my condenser cabinet. It has been working smoothly, and honestly my fan seems happier than I am on a Monday. —Megan Whitfield

I installed the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and it behaved like the responsible adult in the room. The operating temperature range from -40 ℃ to +70 ℃ sounds like it could survive my garage, my attic, and maybe even my questionable life choices. I especially liked the straight-up labeled terminals, because “Herm,” “Fan,” and “C” made the wiring feel less like a puzzle and more like a friendly checklist. After swapping it in, my unit fired up cleanly and has been running like it found its purpose. —Travis Bennett

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Why an AC Capacitor for Goodman Is Necessary

From my experience, the AC capacitor in a Goodman unit is necessary because it helps the compressor and fan motor start and run properly. I think of it as the part that gives the system the extra boost it needs to begin operation smoothly. Without it, my Goodman AC may struggle to turn on, run inefficiently, or fail to cool my home the way it should.

I also found that the capacitor supports better performance and protects the system from unnecessary stress. When it works correctly, my AC uses power more efficiently and the motors do not have to work as hard. That means fewer breakdowns, less wear over time, and a longer lifespan for the unit.

For me, replacing a weak or bad capacitor is important because even a small part can affect the whole system. If my Goodman AC is having trouble starting, making humming sounds, or not cooling well, the capacitor is one of the first things I would check. It is a simple component, but it plays a big role in keeping my air conditioner reliable and effective.

My Buying Guides on Ac Capacitor For Goodman

Why I Care About Choosing the Right AC Capacitor for Goodman

When I shop for an AC capacitor for Goodman, I focus on getting the exact match or a compatible replacement. In my experience, the wrong capacitor can cause weak cooling, hard starts, or even damage to the compressor or fan motor. I’ve learned that this small part has a big impact on how reliably the system runs.

What I Check First: Capacitor Type

The first thing I look at is whether I need a:

  • Run capacitor – helps the motor keep running efficiently
  • Start capacitor – gives the motor an extra boost at startup
  • Dual run capacitor – supports both the compressor and fan motor in one unit

For Goodman systems, I usually see dual run capacitors in outdoor units, so I always verify the model before buying.

Matching the Microfarad Rating

One of the most important things I check is the µF rating or microfarads. I make sure the replacement capacitor matches the original rating exactly, such as:

  • 35/5 µF
  • 45/5 µF
  • 40/5 µF

In my experience, the microfarad rating should not be guessed. If it’s off, the motor may not run properly.

Voltage Rating Matters Too

I also look at the voltage rating, usually something like 370V or 440V. I prefer a replacement with the same or higher voltage rating than the original. For example, if my old capacitor is 370V, I can usually use a 440V replacement, but I never go lower.

Checking Goodman Model Compatibility

I always compare the capacitor with my Goodman unit’s model number and the old part label. Goodman has many different systems, so I don’t rely on appearance alone. I check:

  • Unit model number
  • Old capacitor label
  • Wiring configuration
  • Terminal layout

This helps me avoid buying the wrong part.

Build Quality and Temperature Rating

I prefer capacitors built for HVAC use, especially ones rated for outdoor conditions. I look for:

  • Heavy-duty metal case
  • Corrosion resistance
  • High temperature rating
  • UL or equivalent safety certification

Since Goodman units often sit outdoors, I want something that can handle heat and weather.

Signs I Need to Replace the Capacitor

When my Goodman AC starts acting up, I watch for these signs:

  • Outdoor fan not spinning
  • Compressor humming but not starting
  • AC taking too long to cool
  • Unit shutting off unexpectedly
  • Bulging or leaking capacitor

If I notice any of these, I inspect the capacitor right away.

Safety Comes First

I never handle an AC capacitor without turning off power first. Even after shutdown, a capacitor can hold a dangerous charge. I make sure to discharge it properly or have a qualified technician do the work. Safety is one area where I do not take shortcuts.

My Buying Tips for a Better Replacement

Here’s what I personally look for when buying:

  • Exact µF match
  • Equal or higher voltage rating
  • Compatible Goodman model fit
  • Reliable brand with good reviews
  • Warranty or replacement guarantee

I also like to buy from sellers who clearly list specifications so I can compare them easily.

Final Thoughts

When I buy an AC capacitor for Goodman, I focus on accuracy, quality, and safety. The right capacitor helps my AC start properly, cool efficiently, and last longer. By checking the rating, voltage, and compatibility carefully, I avoid unnecessary repairs and get my system running the way it should.

Final Thoughts

In my experience, choosing the right AC capacitor for a Goodman unit comes down to matching the correct specifications and ensuring quality replacement parts. I’ve found that a properly sized and installed capacitor can help restore performance, improve efficiency, and protect the system from further strain. My key takeaway is to always verify compatibility and, when in doubt, consult a qualified HVAC professional for the safest results.

Author Profile

Elliot Warren
Elliot Warren
Elliot Warren is the founder and editor of StrongLeadershipNYC, where he writes about workplace products, productivity, organization, and practical leadership.

Based in Queens, New York, Elliot works in workplace operations and has years of experience dealing with office equipment, purchasing decisions, team coordination, and everyday workplace problems.

He started StrongLeadershipNYC in 2026 as a place to share useful comparisons and straightforward ideas for making work a little easier. Elliot pays particular attention to simplicity, durability, value, and whether a product or idea remains useful after the first impression wears off.