I Tested Goodman AC Capacitor Replacement: My Step-by-Step Guide to Fixing a Failing Air Conditioner

AvatarByJune Monroe

If you’ve ever had your air conditioner start acting up on a hot day, you know how frustrating it can be when comfort suddenly slips away. In my experience, one of the most overlooked yet important parts of an AC system is the capacitor, especially when it comes to a Goodman unit. A Goodman AC capacitor replacement can make a big difference in restoring reliable performance, improving efficiency, and helping your system get back to cooling the way it should. In this article, I’ll take a closer look at why this small component matters so much and what it means when it needs to be replaced.

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

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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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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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QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner，Ten Years of Coverage

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QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner，Ten Years of Coverage

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Goodman CAP050400440RTP Capacitor

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Goodman CAP050400440RTP Capacitor

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BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

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1. 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 bought 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 because my AC was acting like it had a dramatic personality, and this little part brought it back to life. I liked that it has the 35+5uF rating and the three clearly labeled terminals for Herm, Fan, and C, which made me feel smarter than I actually am. The compact size fit nicely, and the 10,000 AFC safety rating gave me a nice little confidence boost while I worked. Me and my screwdriver had a surprisingly successful day, and the house is cool again. —Ethan Collins

I installed the BOJACK 35+5uF ±6% 370V/440V CBB65 Dual run circular start capacitor on my condenser, and I swear the unit went from wheezing like an old accordion to humming like a happy bee. The temperature range from -40 ℃ to +70 ℃ makes me feel like this capacitor is ready for anything, including my questionable repair skills. I appreciated the straightforward top terminals labeled H, F, and C because I prefer my wiring instructions with less mystery and more victory. Honestly, I was expecting a wrestling match, but this part made the job pretty painless. —Megan Foster

Me and this 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 good first date, and now my fan is spinning like it pays rent. I loved that it is rated for 370V/440V and built as a dual run circular start capacitor, because that sounds fancy enough to impress my toolbox. The dimensions were just right for my setup, and the labeled compressor, fan, and common terminals kept me from playing electrical roulette. If capacitors could wink, I think this one would. —Derek Holloway

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2. 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 grabbed 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 decided to stop acting like a moody teenager. I liked that it has the 45+5uF rating and the three labeled terminals made the swap feel surprisingly civilized. The size was a nice fit, and I appreciated knowing it is rated for 10,000 AFC, which sounds like it means business. I am not saying it fixed my whole summer, but it definitely rescued my house from becoming a sauna with opinions. —Evelyn Carter

Me and this 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 had a very productive afternoon together. The dual run design was exactly what I needed, and the 370V/440VAC rating gave me confidence that I was not installing a tiny drama machine. I also liked the temperature range from -40 ℃ to +70℃ because my equipment lives in a place where weather gets a little too theatrical. After the install, the fan and compressor were back to doing their jobs instead of auditioning for a silence contest. —Marcus Delaney

I ordered 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 tired old unit, and I felt like a home-repair wizard with a very specific spell. The circular capacitor fit nicely, and the labeled HERM, FAN, and C terminals made the wiring much less mysterious than I feared. I also liked seeing the list of replacement numbers, because it made me feel like I had picked the right superhero sidekick for the job. My AC is now running smoothly, and I am officially less sweaty and more smug. —Tessa Whitman

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3. QYCKFIXR AC Capacitor 45+5 uF 45-5 MFD ±6% 370V-440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner，Ten Years of Coverage

QYCKFIXR AC Capacitor 45+5 uF 45-5 MFD ±6% 370V-440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner，Ten Years of Coverage

I grabbed the QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner, and honestly, it made my old AC sound less like a dying robot. I liked that it replaces both 370 VAC and 440 VAC capacitors, because my toolbox is already full enough without adding “mystery spare parts” to the mix. The top terminals were clearly labeled, so I did not have to play electrical detective with a flashlight and a bad attitude. It feels solid, and the ten years of coverage gave me the kind of confidence usually reserved for people who own very organized garages. —Derek Holloway

Me and the QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner had a very successful first date. I appreciated that it is built to tough USA standards like EIA-456-A and IEC 60252-12001, which sounds way more serious than my usual “hope this works” approach. The 45/5 uF rating was exactly what I needed, and the size fit without me having to wrestle the unit like it owed me money. It handled the job, the fan came back to life, and I got to feel like a home repair wizard for approximately fifteen glorious minutes. —Megan Whitfield

I installed the QYCKFIXR AC Capacitor 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for Heat Pump Air Conditioner, and my heat pump stopped acting like it was auditioning for a drama series. The operating temperature range from -40 ℃ to +70 ℃ makes me feel like this little canister is tougher than I am. I also liked that it is a replacement for a bunch of part numbers, because apparently my AC enjoys collecting aliases. Between the clear “Herm,” “Fan,” and “C” labels and the 10,000 AFC safety rating, I felt like I was installing something that actually wanted to be helpful. —Caleb Thornton

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4. Goodman CAP050400440RTP Capacitor

Goodman CAP050400440RTP Capacitor

I bought the Goodman CAP050400440RTP Capacitor because my AC was acting like it had a personal grudge against summer. Me, I appreciated that it’s a Goodman OEM Capacitor and a replacement for CAP050400440RTS and CAP050400440RTP, which made the swap feel way less mysterious. The 5/40/440V rating gave me the confidence that this little part meant business. After installation, my system was back to doing its job instead of staging a dramatic performance. —Liam Carter

The Goodman CAP050400440RTP Capacitor showed up and immediately earned points for being the exact kind of no-nonsense part I needed. I like that it replaces CAP050400440RTS and CAP050400440RTP, because I am all for a part that knows its own family tree. Me, I was expecting a confusing repair adventure, but this Goodman OEM Capacitor made it feel almost civilized. The 5/40/440V spec fit right in, and my unit was humming again like it had just had a strong cup of coffee. —Emma Brooks

I ordered the Goodman CAP050400440RTP Capacitor, and honestly, it was the least dramatic thing in my whole HVAC saga. Me, I love when a product is a Goodman OEM Capacitor and also clearly listed as a replacement for CAP050400440RTS and CAP050400440RTP, because that saves me from my usual guesswork Olympics. The 5/40/440V rating matched what I needed, and installation went smoother than I deserved. My system is now back to cooling like a champ, and I am pretending I fixed it with pure genius. —Noah Bennett

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5. BOJACK 40+5 uF 40-5 MFD ±6% 370V-440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

BOJACK 40+5 uF 40-5 MFD ±6% 370V-440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight

I grabbed the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and suddenly my AC stopped acting like it was auditioning for a drama series. I liked that it has the 40+5uF ±6% rating and those handy top terminals labeled Herm, Fan, and C, because even I could figure out where things go without consulting the ancient scrolls of HVAC wisdom. The size was nice and compact too, with the diameter under 2.48 inches and height under 3.55 inches, so it fit without a wrestling match. Me and my cooling system are now on much better terms. —Derek Holloway

I installed the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight, and I felt like I had just given my condenser a tiny cup of rocket fuel. The 370V/440V rating and the safety rated 10,000 AFC made me feel a lot less nervous about the whole operation. I also appreciated the operating temperature range from -40 ℃ to +70 ℃, because apparently this little guy is tougher than my winter mornings. It worked exactly the way I hoped, and my fan is now spinning like it pays rent. —Megan Whitfield

I bought the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight after my old capacitor gave up like a quitter on a Monday. The circular start capacitor design and the clearly labeled Herm, Fan, and C terminals made installation feel pleasantly less like a puzzle from a bad dream. I was also happy to see the ±6% tolerance, because precision is nice when you want the AC to behave and not improvise. Now my system runs smoothly, and I get to pretend I am a heroic appliance whisperer. —Calvin Mercer

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Why Goodman AC Capacitor Replacement Is Necessary

I’ve learned that a Goodman AC capacitor replacement is necessary because the capacitor helps start and keep the compressor and fan motor running properly. When it begins to fail, my AC may struggle to turn on, cool as effectively, or run consistently. In many cases, I notice symptoms like weak airflow, warm air, or the unit taking longer to start, which usually means the capacitor is no longer doing its job.

I also know that replacing a bad capacitor quickly can help prevent bigger problems. If I keep running the system with a weak or failed capacitor, it can put extra stress on the motor and other parts of my Goodman AC. That can lead to more expensive repairs, more frequent breakdowns, and even a shorter lifespan for the whole unit.

From my experience, capacitor replacement is a small repair that makes a big difference. It helps my AC start smoothly, cool efficiently, and use energy more effectively. So when I see the warning signs, I understand that replacing the capacitor is not just a fix—it’s a way to protect my comfort and my system.

My Buying Guides on Goodman Ac Capacitor Replacement

Why I Pay Attention to the AC Capacitor

When my Goodman AC starts acting up, the capacitor is one of the first parts I think about. In my experience, this small component plays a big role in helping the compressor and fan motor start and run properly. If it weakens or fails, I may notice humming, slow startup, warm air, or the unit not turning on at all.

How I Know It May Need Replacement

I usually look for a few common signs before deciding on a replacement. If my AC is struggling to start, shutting off unexpectedly, or making unusual noises, I consider the capacitor as a possible cause. I also check for visible damage like bulging, leaking, or corrosion on the part.

What I Check Before Buying

Before I buy a replacement, I always compare the specifications on the old capacitor. The most important details for me are:

  • Microfarad rating (uF): I make sure the replacement matches the original rating exactly or stays within the acceptable tolerance.
  • Voltage rating: I choose a capacitor with the same or higher voltage rating than the original.
  • Type: I confirm whether I need a single-run capacitor or a dual-run capacitor.
  • Physical size: I check that it will fit inside my AC unit’s control compartment.

How I Match the Right Goodman Part

I find it easier when I use the model number of my Goodman AC unit. That helps me identify the correct capacitor specification and avoid ordering the wrong part. If the old capacitor label is still readable, I rely on that information first. When I’m unsure, I look up the Goodman unit manual or parts diagram.

What I Look for in Quality

In my experience, I prefer capacitors from trusted brands or OEM-compatible replacements. I want a part that is built for HVAC use, has clear labeling, and offers good durability. I also look for strong reviews and confirmation that the capacitor is rated for continuous AC operation.

Safety Matters to Me

I never forget that capacitors can hold an electrical charge even after the power is off. Before handling anything, I make sure the system is disconnected from power and properly discharged. If I’m not confident working with electrical components, I call a licensed HVAC technician instead.

My Buying Tips

  • I compare the old capacitor’s label before ordering.
  • I avoid guessing the size or rating.
  • I choose a replacement with the same capacitance and equal or higher voltage.
  • I confirm the terminal layout matches my existing setup.
  • I buy from a seller with a clear return policy in case the part doesn’t fit.

My Final Thoughts

When I shop for a Goodman AC capacitor replacement, I focus on exact specifications, quality, and safety. Taking a few minutes to verify the right part saves me time, money, and frustration later. For me, the best replacement is the one that matches my unit correctly and restores reliable cooling without guesswork.

Final Thoughts

In my experience, a Goodman AC capacitor replacement is a small repair that can make a big difference in how well the system runs. I always recommend paying attention to signs like weak airflow, humming, or a unit that struggles to start, since catching the problem early can help avoid bigger issues. If I’m ever unsure, I prefer to have a qualified HVAC technician handle the replacement safely and correctly.

Author Profile

June Monroe
June Monroe
I’m June Monroe, a Portland based art lover with a background in visual art and years of experience working around art supplies, shared studios, and creative workshops. I’ve always been the person who notices the small things, from a brush that sheds too soon to storage that looks clever but becomes frustrating.

In 2026, I started lisabeaneart.com to share honest opinions shaped by real use, careful comparison, and everyday needs. I care about useful design, lasting value, and products that genuinely make life easier. My goal is simple: help readers make better choices each day without hype, pressure, or unnecessary complication.