When your air conditioner stops cooling or your refrigerator starts acting up, a faulty capacitor is often the culprit. These small but mighty components give motors the jolt they need to start and keep running smoothly. Choosing the right replacement can save you a costly service call and extend the life of your appliance.
This guide reviews ten top-rated capacitors and testers, from dual-run models for HVAC systems to versatile assortment kits for hobbyists. We break down specs, compatibility, and practical use cases so you can confidently pick the right part for your repair project.
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BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capac…
Best forHVAC dual-run replacements
- Clear terminal labeling
- Wide temperature range
ConsiderBulky for tight spaces
CapMaster 470F Capacitor Tester, ESR Estimate, 0.01pF–470F Auto Range
Best forProfessional capacitor diagnostics
- Extremely wide range
- High accuracy
ConsiderHigher price point
40UF CBB60 Motor Run Capacitor 450VAC MFD Self-Healing 4Pin 1.77×3.62 in
Best forAir compressor motor runs
- Self-healing film
- High voltage rating
Consider4-pin may require adapter
60UF CBB60 Motor Run Capacitor 250VAC MFD Self-Healing 2wire 1.57×2.87 in
Best forCompact motor run needs
- Small footprint
- Simple 2-wire hookup
ConsiderLower voltage rating
Tnisesm 28 Values Electrolytic Capacitor Assortment Kit from 0.1uF to 4700u…
Best forElectronics hobbyist projects
- Wide value range
- Clear polarity leads
ConsiderNo storage case
Lhpsni EAE58905704 Refrigerator Capacitor Replacement Compatible with LG Re…
Best forLG refrigerator replacements
- Direct OEM replacement
- Heat resistant
ConsiderBrand-specific compatibility
SUPPLYZ Direct Replacement for Frigidaire 5304522104 Appliance Capacitor
Best forFrigidaire appliance swaps
- OEM quality standards
- Easy installation
ConsiderLimited to specific models
ONJYHK 24Values Aluminum Electrolytic Capacitor Assortment Kit 1uF 2.2uF 4….
Best forBudget repair kits
- 120 pieces total
- High ripple current
ConsiderWide tolerance ±20%
MFD10 Capacitor Tester, Digital Capacitance Meter with LED Display, 0.001µF…
Best forHVAC field testing
- Bright LED display
- Durable housing
ConsiderLimited range up to 9999µF
30UF CBB60 Motor Run Capacitor 450VAC MFD Self-Healing 2wire 1.77×2.91 in
Best forFrequent motor cycling
- Self-healing film
- High voltage rating
ConsiderLimited to 30 uF
BOJACK 45+5 uF Dual Run Capacitor – Reliable HVAC Choice
The BOJACK 45+5 uF dual run capacitor is a solid pick for central air conditioning units and heat pumps. Its CBB65B design handles both compressor and fan motor duties, with clearly labeled Herm, Fan, and C terminals that simplify wiring. The operating range of -40°C to +70°C covers extreme climates, and the 10,000 AFC safety rating offers peace of mind against short circuits.
Measuring just 2.56 inches in diameter and 3.74 inches tall, it fits most standard mounting brackets. The ±6% tolerance ensures dependable performance, while the 370V/440VAC rating provides flexibility for various systems. If you need a dual-run capacitor that delivers consistent starts and smooth operation, this BOJACK model is a trustworthy option for HVAC repairs.
- Clear terminal labeling
- Wide temperature range
- High safety rating
- Bulky for tight spaces
- Limited to 45+5 uF
CapMaster 470F Capacitor Tester – Precision for Pros
The CapMaster 470F tester is a game-changer for anyone who works with capacitors regularly. Its ultra-wide range from 0.01pF to 470F covers everything from tiny signal capacitors to large power units, making it a versatile tool for diagnostics. With up to 1% accuracy, you can trust the readings to identify weak or failing components quickly.
The 128×64 dot-matrix LCD displays up to 5-digit values clearly, even in dim workshops. Auto and manual ranging give you flexibility, whether you are testing a 45 uF run capacitor or a 1000 uF electrolytic. For HVAC technicians and electronics enthusiasts, this tester streamlines troubleshooting and ensures you only replace parts that are truly faulty.
- Extremely wide range
- High accuracy
- Clear display
- Higher price point
- Requires battery (not included)
Resilora 40UF CBB60 Capacitor – Durable Motor Run
The Resilora 40UF CBB60 capacitor is built for heavy-duty applications like air compressors and water pumps. Its metallized polypropylene film construction provides self-healing properties, meaning minor dielectric breakdowns won’t permanently damage the component. Rated at 450VAC with a ±5% tolerance, it delivers stable performance under load.
The 4-pin design offers flexible wiring options, though you may need to adapt connections depending on your setup. At 1.77 inches in diameter and 3.62 inches tall, it fits most standard enclosures. The strong overload capability ensures it handles current spikes without failure, making it a reliable choice for motors that cycle frequently.
- Self-healing film
- High voltage rating
- Strong overload resistance
- 4-pin may require adapter
- Specific size may not fit all
Resilora 60UF CBB60 Capacitor – Compact Power
For applications needing a higher capacitance in a smaller package, the Resilora 60UF CBB60 capacitor fits the bill. With a diameter of just 1.57 inches and a height of 2.87 inches, it is more compact than many equivalents, making it easier to install in tight spaces. The 250VAC rating is suitable for many household appliances like washing machines and pumps.
The self-healing metallized polypropylene film ensures long-term reliability, and the ±5% tolerance keeps performance consistent. The 2-wire design simplifies connections, reducing installation time. Whether you are replacing a worn-out capacitor in a dryer or a pressure washer, this Resilora model offers dependable operation without taking up too much room.
- Small footprint
- Simple 2-wire hookup
- Self-healing construction
- Lower voltage rating
- Limited to 60 uF
Tnisesm 28 Values Capacitor Kit – DIY Essential
The Tnisesm electrolytic capacitor assortment kit is a treasure trove for electronics hobbyists. It includes 28 different values ranging from 0.1uF to 4700uF across voltage ratings of 10V to 50V, covering a broad spectrum of repair and project needs. The in-line aluminum capacitors feature long leads for positive and short leads for negative, making polarity identification straightforward.
These capacitors offer low leakage current and low internal resistance, which translates to efficient performance in circuits. Whether you are repairing a motherboard or building a custom audio project, having this variety on hand saves time and money. The kit is well-organized, though you may want to add your own labeling for quick identification.
- Wide value range
- Clear polarity leads
- Low leakage current
- No storage case
- Tolerance not specified
Lhpsni EAE58905704 Capacitor – LG Refrigerator Fix
If you own an LG refrigerator, the Lhpsni EAE58905704 capacitor is a direct replacement for several OEM part numbers, including EA3620482 and EAE32501010. Built with high-quality components, it offers strong durability and heat resistance, ensuring long-term stability in the demanding environment of a fridge compressor. This capacitor helps reduce electrical fluctuation risks, contributing to safer operation.
Designed for refrigerators, freezers, and other cooling appliances, it is a practical choice for HVAC technicians and DIY homeowners alike. The installation is straightforward, though you should always disconnect power before working. For a reliable fix that restores your LG appliance’s performance, this capacitor is a cost-effective alternative to OEM parts.
- Direct OEM replacement
- Heat resistant
- Stable operation
- Brand-specific compatibility
- Single capacitor only
SUPPLYZ 5304522104 Capacitor – Frigidaire Fit
The SUPPLYZ 5304522104 capacitor is engineered as a direct replacement for Frigidaire appliances, but it also fits many top brands. It meets or exceeds OEM quality standards, ensuring reliable performance. The capacitor comes brand new in original retail packaging, which adds confidence in its authenticity.
Installation is designed to be easy, with a form factor that matches the original part. Whether you are repairing a refrigerator, freezer, or other appliance, this capacitor provides a straightforward swap. The satisfaction guarantee offers peace of mind, making it a low-risk purchase for DIYers who want a hassle-free repair.
- OEM quality standards
- Easy installation
- Satisfaction guarantee
- Limited to specific models
- No extra features
ONJYHK 24 Values Capacitor Kit – Budget Friendly
The ONJYHK 24 values aluminum electrolytic capacitor kit offers 120 pieces covering 1uF to 2200uF with voltage ratings from 16V to 63V. This assortment is ideal for equipment repair and electronics experiments, providing a broad selection without breaking the bank. The through-hole design makes soldering easy for beginners and pros alike.
These capacitors feature high ripple current handling and low leakage, which is crucial for power supply circuits. The ±20% tolerance is typical for electrolytics and acceptable for most applications. If you need a budget-friendly kit to stock your workbench, this set delivers good value and versatility.
- 120 pieces total
- High ripple current
- Low leakage
- Wide tolerance ±20%
- No case included
BBAYYAO MFD10 Tester – HVAC Diagnostic Tool
The BBAYYAO MFD10 capacitor tester is a practical tool for HVAC technicians. It measures capacitance from 0.001µF to 9999µF with ±5% accuracy, which is sufficient for testing motor start and run capacitors. The bright red LED display ensures readability in dark attics or bright outdoor settings, a common challenge in field work.
Its compact, durable housing withstands daily job site use, and the simple two-button operation makes it user-friendly. The included alligator clip leads allow for quick connections without needing a probe. For a ready-to-work kit that ships with everything you need, this tester is a solid investment for professionals and serious DIYers.
- Bright LED display
- Durable housing
- Complete kit
- Limited range up to 9999µF
- Basic features
Resilora 30UF CBB60 Capacitor – Versatile Run Capacitor
The Resilora 30UF CBB60 capacitor is another versatile option from the brand, rated at 450VAC with a ±5% tolerance. It is suitable for air compressors, water pumps, and air conditioners, offering strong overload capability to handle current surges. The self-healing metallized polypropylene film ensures durability over time.
With a diameter of 1.77 inches and a height of 2.91 inches, it fits many standard mounting areas. The 2-wire design simplifies installation, making it a good choice for quick replacements. If you need a 30 uF capacitor for a motor that runs frequently, this Resilora model delivers consistent performance.
- Self-healing film
- High voltage rating
- Easy 2-wire hookup
- Limited to 30 uF
- No mounting bracket
Buyer’s Guide: What to Consider
Selecting the right capacitor involves more than just picking a brand. Consider these key factors to ensure compatibility and reliable performance in your appliance repair.
- Capacitance Value: Match the microfarad (uF) rating exactly to your original capacitor. Using a wrong value can cause motor overheating or failure. Check the label on the old part or consult your appliance manual.
- Voltage Rating: Choose a capacitor with a voltage rating equal to or higher than the original. A higher rating provides a safety margin, but never use a lower one. Common ratings include 250VAC, 370VAC, and 450VAC.
- Capacitor Type: Motor run capacitors are designed for continuous duty, while start capacitors provide a boost during startup. Dual-run capacitors combine two values in one unit. Select the type that matches your appliance's requirements.
- Physical Size: Ensure the capacitor fits in the available space. Measure the diameter and height of the old capacitor and compare with the replacement's dimensions. Compact designs may be necessary for tight enclosures.
- Terminal Configuration: Check the number and type of terminals. Common configurations include 2-wire, 4-pin, or labeled terminals like Herm, Fan, and C. Choose a capacitor that matches your wiring setup to simplify installation.
Conclusion
Choosing the right capacitor can be straightforward if you focus on specifications like capacitance, voltage, and physical fit. For HVAC systems, the BOJACK dual-run capacitor is a top choice, while the Resilora CBB60 models offer reliable motor run performance. If you need a tester, the CapMaster 470F provides professional-grade accuracy.
For refrigerator repairs, the Lhpsni and SUPPLYZ replacements are dependable options. Hobbyists will appreciate the Tnisesm and ONJYHK kits for their versatility. Always verify your appliance’s requirements before purchasing, and you will extend its life without unnecessary expense.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
Whether you're looking for camping equipment or the latest fashion accessories, Erica's articles are the perfect resource for finding the best products that fit your lifestyle.