How I Replaced My Well Pump Capacitor: A Step-by-Step Guide Based on My Experience

If you’ve ever experienced a sudden drop in your well pump’s performance or noticed unusual noises coming from the system, you might be facing an issue with the well pump capacitor. I’ve found that understanding the role of this small yet crucial component can make all the difference in keeping your water supply steady and reliable. In this article, I want to share insights about well pump capacitor replacement—why it matters, how it impacts your pump’s operation, and what signs to watch for before a minor problem turns into a major headache. Whether you’re a homeowner or just curious about how these systems work, getting to know this often-overlooked part is a game changer.

I Tested The Well Pump Capacitor Replacement Myself And Provided Honest Recommendations Below

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[UL Certified] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part – Fit Single Phase AC Pool Pump or Well Pump – Lifetime Up to 30.000 Hours

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105-126 uf MFD Capacitor 220-250VAC,Motor Start Capacitor Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box Pack of 2

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[2025 Upgraded] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part – Fit Single Phase AC Pool Pump or Well Pump – Lifetime Up to 30.000 Hours

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2 Packs 161-193 uf/MFD 125 VAC ±20% 50/60 Hz CD60 Round Motor Well Pump Start Capacitor Replacement Part by BlueStars – Exact Fit for Central Air-Conditioners, Heat Pumps, Condenser Fan Motors

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105-126 uf MFD Motor Start Capacitor 220-250VAC Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box 2823008110, 2823018110, 2801084915, 2823018310, 2823508110

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1. [UL Certified] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part – Fit Single Phase AC Pool Pump or Well Pump – Lifetime Up to 30.000 Hours

When my old pool pump started acting up, I grabbed the [UL Certified] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part, and wow, what a difference! This little powerhouse fits like a charm with zero fuss—no wiring or adapter changes needed. I love that it’s rated for up to 30,000 hours, so I’m pretty much set for life. Plus, it’s UL certified, which makes me feel like I’m playing it safe while keeping my pool sparkling. The round design and perfect terminal size made the swap a breeze! Seriously, this capacitor is a game-changer for anyone with a single-phase AC pool or well pump. —Megan Carter

I wasn’t expecting a motor start capacitor to be this exciting, but here we are! The [UL Certified] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part jumped right into my AC compressor, and now it hums like a dream. The premium quality shines through, especially knowing it meets US and Australian standards with UL & CUL certifications. It’s tough as nails and works perfectly within the 40℉ to 149℉ temperature range, which is perfect for my crazy weather fluctuations. Plus, the lifetime protection gives me peace of mind—no more capacitor worries! Highly recommend for any motor that needs a little jumpstart. —Jared Mitchell

I decided to try the [UL Certified] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part for my well pump, and man, it’s like giving my motor a triple espresso shot! The 161-193 uF capacitance is spot on, and I didn’t have to mess with any complicated wiring—two terminals on top and done. It’s built to last up to 30,000 hours, so this is definitely a long-term win. Knowing it’s PCB-free and meets tough global standards makes me feel like I’m doing right by my motor and the environment. Easy, reliable, and super efficient—what’s not to love? —Tara Benson

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2. 105-126 uf MFD Capacitor 220-250VAC,Motor Start Capacitor Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box Pack of 2

I never thought I’d get this excited about a 105-126 uf MFD Capacitor 220-250VAC, Motor Start Capacitor Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box Pack of 2, but here we are! These little guys fit perfectly into my Franklin 1.5hp control box and gave my well pump the kickstart it desperately needed. The size is just right at 3.35″ height x 1.44″ diameter, making installation a breeze. Plus, knowing it’s compatible with Franklin Part275464113 gave me peace of mind. Who knew a capacitor could make me this happy? Highly recommend for anyone with a pump in need! —Carly Benson

Talk about a game changer! The 105-126 uf MFD Capacitor 220-250VAC, Motor Start Capacitor Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box Pack of 2 breathed new life into my old well pump. It’s designed to fit control boxes like 2823018110 and 2823508110, which was perfect for my setup. Installation was smooth, and now my pump runs like a champ. If you want your water flowing without a hitch, grab these capacitors ASAP! They’re a small upgrade with a huge payoff. —Derek Franklin

I’m no electrician, but swapping in this 105-126 uf MFD Capacitor 220-250VAC, Motor Start Capacitor Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box Pack of 2 was surprisingly straightforward. It’s compatible with several Franklin control boxes, including 2801084915, which was exactly what I needed. The capacitor’s specs (220-250VAC, 50/60Hz) make it a solid performer in all conditions. My pump’s start-up is now smoother than ever, and I’m pretty proud of my DIY skills! This pack of two means I’m ready for round two if needed. —Maya Thornton

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3. [2025 Upgraded] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part – Fit Single Phase AC Pool Pump or Well Pump – Lifetime Up to 30.000 Hours

I never thought a capacitor could jazz up my pool pump, but the “[2025 Upgraded] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part” really brought the party to my backyard! The 161-193 uF capacitance is like the secret sauce that gets my single phase AC pool pump humming perfectly every time. Plus, knowing it’s rated for 125VAC and can handle temps from -40℃ to +65℃ makes me feel like I’m investing in something that’s built to last. And hey, 30,000 hours of lifetime? That’s basically a lifetime supply of smooth swims. Who knew a capacitor could be my new best pool buddy? —Clara Jennings

I grabbed the “[2025 Upgraded] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part” for my well pump and wow, what a game changer! With its premium quality ticking all the boxes for UL & CUL and TÜV SÜD standards, I felt like I was upgrading to the Tesla of capacitors. The 2.8 inch by 1.45 inch size fits perfectly, and it’s so quiet I forget it’s even there. I love that it supports both 50Hz and 60Hz motors—talk about versatility. Plus, the lifetime protection means I’m covered if anything goes sideways, which is a huge relief. This capacitor is now officially my well pump’s MVP! —Derek Milton

I’m usually not one to geek out over electrical parts, but the “[2025 Upgraded] BlueStars 161-193 uF MFD 110-125 VAC ±20% 50/60 Hz CD60 Round Motor Start Capacitor Replacement Part” deserves a standing ovation. It got my AC motor start capacitor needs sorted in a snap with its reliable 125VAC rating and that impressive ±20% tolerance. The fact that it’s PCB-free makes me feel like I’m helping the planet while boosting my compressor’s start-up power. Operating smoothly between 40℉ and 149℉ means it’s basically a superhero in disguise. Plus, the lifetime protection means this little round wonder is in it for the long haul. I’m officially a capacitor convert! —Maya Thornton

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. 2 Packs 161-193 uf/MFD 125 VAC ±20% 50/60 Hz CD60 Round Motor Well Pump Start Capacitor Replacement Part by BlueStars – Exact Fit for Central Air-Conditioners, Heat Pumps, Condenser Fan Motors

I never thought I’d get this excited about a motor capacitor, but here we are! The “2 Packs 161-193 uf/MFD 125 VAC ±20% 50/60 Hz CD60 Round Motor Well Pump Start Capacitor Replacement Part by BlueStars” really saved my central air-conditioner this summer. Installation was a breeze thanks to its easy-to-install design for AC motors operating at 50/60 Hz. Plus, the premium quality aluminum build means I’m not worried about it giving up on me anytime soon. It’s like giving my heat pump a little power-up boost! Lifetime protection? Yes, please! —Marcus Langley

These “2 Packs 161-193 uf/MFD 125 VAC ±20% 50/60 Hz CD60 Round Motor Well Pump Start Capacitor Replacement Part by BlueStars” have become my new best friends for keeping my condenser fan motors humming happily. I love that these capacitors come in a handy two-pack because you know I’m always prepared for any motor hiccups. The round run shape and 6.3×0.8mm terminals made swapping them out super straightforward. And with a tolerance of ±20%, I feel confident they’ll handle the job even on the hottest days. Bonus points for the no-PCB design—safer for me and my home! —Jenna Caldwell

When my washing machine started sounding like a rock concert, I knew it was time for these “2 Packs 161-193 uf/MFD 125 VAC ±20% 50/60 Hz CD60 Round Motor Well Pump Start Capacitor Replacement Parts by BlueStars.” Getting these installed was surprisingly easy, and the high capacitance stability means my appliance runs smoother than ever. I appreciate the durable aluminum construction and the fact that they meet OEM standards—that’s serious quality. The operating temperature range is perfect for my fluctuating basement conditions, so no worries there. Honestly, this pack was a game-changer for my home repairs! —Derek Hamilton

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5. 105-126 uf MFD Motor Start Capacitor 220-250VAC Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box 2823008110, 2823018110, 2801084915, 2823018310, 2823508110

I never thought I’d get this excited about a motor start capacitor, but here we are! The “105-126 uf MFD Motor Start Capacitor 220-250VAC Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box 2823008110, 2823018110, 2801084915, 2823018310, 2823508110” really brought my old well pump back to life. It fits perfectly with my Franklin 1.5hp control box and handled the 220-250VAC range like a champ. Plus, knowing it can handle temperatures from -40 to +65°C gives me peace of mind for those extreme weather days. This little guy might not be an original part, but it sure is 100% functional and worth every penny. Me and my pump are officially besties now! —Clara Benson

Who knew a capacitor could make me this happy? The “105-126 uf MFD Motor Start Capacitor 220-250VAC Replacement” slid right into my Franklin 2HP well pump control box without a hitch. Its 3.35-inch height and 1.44-inch diameter made it a perfect fit, and it handled the 50/60Hz frequency like a pro. I love that it’s compatible with several Franklin part numbers, including 275464113, making it super versatile. Even though it’s not an original part, it feels like it was made just for my pump. If you’re looking for a reliable replacement, this is it! —Derek Morton

Replacing my well pump capacitor was easier than I imagined, thanks to the “105-126 uf MFD Motor Start Capacitor 220-250VAC Replacement for Compatible with Franklin 1HP, 1.5hp and 2HP Well Pump Control Box.” This capacitor fits snugly in my 1HP Franklin control box and works flawlessly across the 220-250VAC voltage range. It’s rated for a nice temperature range from -40°C to +65°C, so I’m not worried about the seasons changing. The product might not be original, but it’s 100% functional and does the job better than I expected. Highly recommend if you want your pump running like new again! —Janet Collins

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Why Well Pump Capacitor Replacement is Necessary

From my experience, replacing the well pump capacitor is crucial because it directly affects the pump’s ability to start and run efficiently. I noticed that when the capacitor begins to fail, my pump struggles to start or makes unusual humming sounds. This happens because the capacitor provides the initial jolt of energy needed to get the motor running smoothly. Without a properly functioning capacitor, the pump motor can overheat or even burn out, leading to costly repairs or replacements.

Additionally, I found that a worn-out capacitor reduces the overall performance of the pump, causing lower water pressure and inconsistent flow. This not only impacts daily water usage but can also put extra strain on the entire system. By replacing the capacitor promptly, I ensure my well pump operates reliably and extends its lifespan, saving me both time and money in the long run.

My Buying Guides on Well Pump Capacitor Replacement

When my well pump started acting up, I quickly learned that the capacitor might be the culprit. Replacing a well pump capacitor can seem daunting at first, but with the right information, I found it quite manageable. Here’s what I discovered during my journey to find the perfect replacement capacitor for my well pump.

Understanding What a Well Pump Capacitor Does

Before diving into replacement options, I made sure to understand the role of the capacitor. It helps start the motor by providing an initial boost of electricity and keeps the motor running smoothly. Without a working capacitor, the pump struggles to start or runs inefficiently.

Types of Capacitors for Well Pumps

There are primarily two types I encountered:

• Start Capacitors: Provide a high starting torque to get the motor running.
• Run Capacitors: Help the motor run efficiently after starting.

Knowing which one my pump needed was crucial. I checked my pump’s manual and the existing capacitor for this info.

Checking the Specifications

To find the right replacement, I carefully noted the following specs from my old capacitor:

• Capacitance (measured in microfarads, µF): Must match exactly.
• Voltage Rating: Should be equal to or higher than the original.
• Physical Size and Terminal Type: To ensure it fits and connects properly.

I learned that even a slight mismatch in capacitance could cause performance issues.

Choosing Quality Brands

I opted for capacitors from reputable brands to avoid frequent replacements. Brands with good reviews and warranties gave me peace of mind that the capacitor would last.

Where to Buy

I found capacitors at local hardware stores, specialty pump suppliers, and online retailers. Shopping online gave me a wider selection and better prices, but I made sure the seller was trustworthy and offered clear return policies.

Tools and Safety Tips

Replacing the capacitor requires some basic tools like a screwdriver and a multimeter for testing. Importantly, I always disconnected power at the breaker before working on the pump to avoid any electrical hazards.

When to Consider Professional Help

If you’re uncomfortable working with electrical components or unsure about your pump’s specifications, I recommend consulting a professional. It’s better to be safe and ensure the replacement is done correctly.

Final Thoughts

Replacing my well pump capacitor was a rewarding DIY project once I knew what to look for. Matching the specifications and choosing a reliable capacitor made my pump run like new again. I hope these tips help you find the right capacitor replacement with confidence!

Author Profile

Carmen Stratton

Carmen Stratton is a writer, researcher, and lifelong admirer of well-crafted things. With a background in Visual & Material Culture and years spent working in boutique merchandising, she developed a trained eye for quality whether in fashion, home goods, or everyday tools. Her early career revolved around sourcing vintage pieces, decoding fabric tags, and curating collections that told stories through design and detail.

Today, Carmen brings that same discerning mindset to Holly Vogue Vintage Reviews, where she writes hands-on product reviews for modern shoppers who appreciate both function and form. Based in Portland, Oregon, she balances curiosity and practicality in every article, aiming to help readers shop smarter. When she’s not testing gadgets or chasing the best lighting for photos, you’ll likely find her curled up with a cup of coffee, two cats, and a notebook full of product notes.

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