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For air conditioners and HVAC systems, capacitors are essential for reliable operation. They provide start-up power, maintain consistent motor performance, support compressors and fans, and ensure efficient energy use, extending equipment life and preventing system failures.
-10%Schneider Electric (Barber Colman) MP-453-133 Capacitor Driven Electric Damper Actuator 1000 Ohm 120VSpecial Price $2,076.12 Regular Price $2,304.49
-26%15Mfd 370V Round Run Capacitor For Carrier Part# P291-1503RSpecial Price $6.60 Regular Price $8.91Out of stock
-23%Tecumseh K150-04 Round Run Capacitor 15 MFD 440VSpecial Price $38.01 Regular Price $49.41Out of stock- -23%
- -23%Amana-Goodman CAP150000370VAP 15Mfd 370V Oval Run CapacitorSpecial Price $15.91 Regular Price $20.69
- -23%Carrier P281-5305 Start Capacitor 53-64 MFD250VSpecial Price $30.20 Regular Price $39.26Out of stock
- -23%Carrier 51301830500 5MFD 400V Single Run Roumd CapacitorSpecial Price $25.48 Regular Price $33.12Out of stock
Capacitors for Air Conditioners and HVAC Systems
Air conditioner capacitors are vital HVAC components that help start and run motors efficiently. They store and release electrical energy to support compressors, fans, and other motors, ensuring smooth operation. Capacitors provide the initial energy to start motors, maintain operation under varying loads, stabilize voltage, and enhance motor efficiency, preventing overheating and ensuring consistent performance of compressors and fans.
Failing capacitors often cause motors to struggle or fail to start, resulting in unusual humming or buzzing sounds. You may notice reduced cooling efficiency, frequent tripping of breakers, or intermittent operation of fans and compressors. Visible signs such as swelling, leaking, or burnt components on the capacitor are clear indicators it needs replacement.
At PartsHnC, we provide a wide range of air conditioner capacitors for top HVAC brands, including Carrier, Trane, Goodman, Lennox, and Rheem. We sell trusted accessories, including start 220V, run 370V, dual 4 40V, oval & round 370V, capacitor kits, assemblies, and mounting straps.
FAQs
What causes an HVAC capacitor to fail prematurely?
Overheating, voltage spikes, frequent cycling, or exposure to moisture can cause an HVAC capacitor to fail quickly, reducing system efficiency and reliability.
Why is my AC humming but not blowing cold air?
A weak or damaged capacitor may prevent the compressor or fan from running correctly, causing humming.
How can I identify a bad AC run capacitor?
Look for bulging, leaking, or burnt capacitor components; check with a multimeter for voltage inconsistencies.
What do I do if my air conditioner won’t start after a storm?
Power surges may have damaged the capacitor; replacing it often restores normal operation.
Why is my AC fan running slowly even though the power is on?”
A failing run capacitor can reduce motor efficiency, slowing the fan and lowering cooling performance.
How do I know it’s time for an air conditioner capacitor replacement?”
Frequent AC humming, slow fan startup, or weak cooling are signs you need replacement immediately.