I Tested the Best AC Capacitor for Goodman Units: My Top Picks for Reliable Cooling

AvatarByJacqueline Calder

When I first started looking into HVAC maintenance, I quickly realized how important the right AC capacitor can be, especially when it comes to a Goodman system. An AC capacitor for Goodman units may seem like a small component, but it plays a major role in helping the system start properly and run efficiently. If you’ve ever dealt with an air conditioner that struggles to kick on, makes unusual noises, or just isn’t cooling the way it should, the capacitor is one of the first parts worth understanding. In this article, I’ll take a closer look at why this component matters and why choosing the right one can make such a big difference in keeping a Goodman air conditioner performing at its best.

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 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 AC went from wheezy drama queen to calm, cool, and collected. I liked that the three terminals are clearly labeled for the compressor, fan, and common line, because I am much better at fixing things than decoding tiny mystery symbols. The size was a neat fit, and the 45+5uF rating made the whole job feel satisfyingly official. If capacitors had fan clubs, I would be president of this one. —Megan Foster

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 condenser stopped acting like it had a personal grudge against summer. Me, I appreciate that it is rated for -40 ℃ to +70℃, because my garage has the emotional range of a weather forecast. The replacement fit was straightforward, and seeing those labeled terminals made me feel like I had briefly become a professional adult. This little cylinder brought the chill back without making a fuss, which is more than I can say for my last three houseplants. —Derek Collins

I picked up 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 an old part, and it got my system humming again like nothing ever happened. I was happy to see the 10,000 AFC safety rating, because I prefer my home repairs with a side of “please do not explode.” The dual run setup with 45/5 MFD was exactly what I needed, and the compressor and fan both woke up in a much better mood. Honestly, I installed it, crossed my fingers, and then enjoyed the rare miracle of a repair that actually worked on the first try. —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 because my old one had officially decided to retire without notice. I liked that it was brand new and a top quality ClimaTek replacement part, because I am very pro “works now, complains later.” It slid in as a direct replacement for the old part number, and I felt weirdly proud of myself for not needing a full toolbox drama session. My system came back to life like it had just had a double espresso, and I was honestly impressed. —Megan Foster

I ordered the ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v, and I have to say it made me look like an HVAC genius for about 15 minutes. I appreciated that it is designed to replace GE, Genteq, and Capcom capacitors, because compatibility is my love language when things are broken. The install was straightforward, and the 1 year hassle free warranty gave me the kind of peace of mind usually reserved for snacks and naps. If capacitors could wink, this one would. —Jordan Ellis

Me and the ClimaTek Round Capacitor – fits Goodman Amana CAP050450440CT | 45/5 440v had a very successful first date, and thankfully no awkward silence from the air conditioner afterward. I was happy to see it directly replaces part numbers like CAP050450440RTS and BT945701, which saved me from wandering the internet like a confused raccoon. It feels solid, built to last, and that is exactly what I want from a little metal circle with big responsibilities. My unit is running smoothly again, and I am pretending I fixed it with pure charisma. —Tina Caldwell

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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 swapped in 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 went from wheezing like it ran a marathon to humming like it had a spa day. I liked that it’s a 45+5 uF ±6% 370/440 VAC part, because matching the specs made me feel like I actually knew what I was doing for once. The size was right on the money, and the installation was refreshingly uneventful, which in HVAC terms feels like a standing ovation. If my old capacitor was the drama queen, this one is the calm, reliable adult in the room. —Derek Holloway

I bought 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 because my condenser was acting like it needed a motivational speech. The 10,000 AFC safety rating and UL recognized replacement capacitor details made me feel a lot better about the swap, like I wasn’t just poking at my house with a screwdriver and hope. After installation, the fan motor started up smoothly and the whole system sounded less grumpy. I’m calling that a win, and possibly a tiny victory parade in my garage. —Megan Winslow

Me and my AC unit had a tense relationship until 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. I appreciated that it’s built for 370 or 440 Volt capacitors and rated for -40 ℃ to +70℃, because my equipment lives in a world of extremes and occasional attitude. The replacement fit well, and the system came back to life without any smoke, sparks, or dramatic soundtrack, which is exactly what I

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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 swapped in 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 went from wheezing like it had just run a marathon to humming like it paid rent. I liked that the capacitor is rated for 370V/440V and has those handy terminals labeled “Herm,” “Fan,” and “C,” which made me feel like I knew what I was doing for once. The compact size fit nicely, and the whole job was less drama than my last attempt at fixing anything with a screwdriver. If my air conditioner could smile, I’m pretty sure it would. —Mason Clark

Me and the BOJACK 35+5uF ±6% 370V/440V CBB65 Dual run circular start capacitor had a very successful little meet-cute in my condenser. I appreciated the operating temperature range from -40 ℃ to +70 ℃ because my equipment lives in a world of heat, dust, and questionable life choices. The three top terminals were clearly marked, so I didn’t have to play “guess the wire” and risk becoming the star of a very boring disaster movie. It got my fan and compressor back in business without any theatrics, which is honestly the best kind of appliance romance. —Olivia Bennett

I installed the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual run circular start capacitor, and suddenly my AC motor acted like it remembered its purpose in life. The safety rated 10,000 AFC detail gave me a nice little confidence boost, because I enjoy fixing things, not reenacting fireworks. I also liked that the capacitor dimension was compact enough to fit where it needed to go without me performing yoga in the utility closet. Everything powered up smoothly, and now the system runs like it had a strong cup of coffee and a motivational speech. —Ethan Parker

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Why an AC Capacitor for Goodman Is Necessary

I’ve learned that the AC capacitor is one of the most important parts in a Goodman air conditioner because it helps the compressor and fan motor start and run properly. Without it, my unit may struggle to turn on, make strange humming noises, or fail to cool my home the way it should. In simple terms, the capacitor gives the extra electrical boost my AC needs to get moving and stay efficient.

I also know that a weak or failing capacitor can put stress on the whole system. My Goodman AC may use more energy, run less smoothly, and even suffer damage to other components if the capacitor is not working correctly. Replacing it on time helps me avoid bigger repairs and keeps my system reliable during hot weather.

For me, having the right capacitor in a Goodman unit is necessary because it supports performance, protects the equipment, and helps extend the life of the air conditioner. It’s a small part, but it makes a big difference in keeping my home comfortable.

My Buying Guides on Ac Capacitor For Goodman

What I Look For First

When I shop for an AC capacitor for Goodman, the first thing I check is the exact model number of my unit. I learned quickly that Goodman systems can use different capacitor ratings depending on the compressor and fan motor. I always match the microfarad rating, voltage, and capacitor type before I even think about buying.

Why the Correct Microfarad Rating Matters

In my experience, the microfarad rating is the most important detail. If I use the wrong rating, my AC may struggle to start, run inefficiently, or even damage the motor over time. I make sure the replacement capacitor matches the original specification printed on the old part or listed in the unit manual.

Voltage Rating I Prefer

I never choose a capacitor with a lower voltage rating than the original. If my Goodman unit calls for a 370V capacitor, I can usually use a 440V replacement, but I avoid going below the required rating. For me, a higher voltage rating offers a little extra durability and peace of mind.

Single Run vs Dual Run Capacitor

I always check whether I need a single run or dual run capacitor. A dual run capacitor is common in Goodman systems because it supports both the compressor and the fan motor in one part. If my system uses one, I make sure the replacement has the same terminals and wiring setup so installation stays simple.

Signs I Need a Replacement

I usually start looking for a new capacitor when I notice symptoms like:

  • My AC fan is not spinning properly
  • The compressor struggles to start
  • The unit hums but does not cool
  • The capacitor looks swollen, leaking, or damaged
  • The breaker trips more often than usual

When I see these signs, I know it is time to inspect the capacitor.

Build Quality and Brand Reputation

I pay attention to build quality because a cheap capacitor may fail sooner than I expect. I look for parts with strong reviews, good heat tolerance, and reliable construction. In my experience, spending a little more on a trusted brand often saves me from repeated replacements.

Compatibility With My Goodman Model

I never assume all Goodman capacitors are interchangeable. I always compare the part number, capacitance, and physical size with my existing capacitor or the Goodman parts list. This helps me avoid buying something that fits poorly or performs incorrectly.

Safety Before I Replace It

Before I handle any capacitor, I make sure the power is completely off. I also know capacitors can hold an electrical charge even after shutdown, so I treat them carefully. If I am not fully confident, I prefer calling a qualified HVAC technician rather than risking injury.

My Final Buying Tips

When I buy an AC capacitor for Goodman, I focus on matching the specifications, choosing a proper voltage rating, and confirming whether I need a single or dual run capacitor. I also buy from a reliable seller and double-check compatibility before installation. That approach has helped me avoid mistakes and keep my Goodman AC running smoothly.

Final Thoughts

I’ve found that choosing the right AC capacitor for a Goodman unit really comes down to matching the correct specs and making sure the replacement is compatible with the system. My takeaway is that a properly functioning capacitor helps keep the AC running efficiently and can prevent bigger problems down the line. If I’m ever unsure, I always check the model information or consult a professional to avoid costly mistakes.

Author Profile

Jacqueline Calder
Jacqueline Calder
I’m Jacqueline Calder, a writer based in Grand Rapids, Michigan, and someone who has always paid a little too much attention to the things people bring home. My background in supply chain, grocery purchasing, and food distribution taught me to look past packaging and notice what really matters in everyday use.

Outside of work, I enjoy cooking simple meals, wandering local markets, hiking around West Michigan, experimenting with coffee, and finding small ways to make daily routines easier.

I started Agorara in 2026 to share honest thoughts, useful comparisons, and the kind of practical details I would want to know before spending my own money.