Air Conditioner Capacitor
TEMCo - Your Air Conditioner Capacitor Source
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An Air Conditioner Capacitor is one which is used for one of two main purposes. Air conditioners and air conditioning systems use capacitors for both the compressor (commonly referred to as the hermetic pump) and the fan. For smaller systems, these motors are both single phase. For larger systems, they may use a three phase compressor and a single phase fan, or even both a three phase compressor and fan.
Air Conditioner Capacitor - Starting Capacitor
The most common need for replacement of an Air Conditioner Capacitor is the starting capacitor used in single phase compressors or fans. Starting Capacitors create a phase shift during start up of the electric motor to help produce enough torque to bring the motor to full speed.
In hot environments, this capacitor may be over worked and fail prematurely. At this point, a replacement will need to be obtained to bring the system back online. Fortunately, these are very simple to select. Start with the voltage, then capacitance, and finally, you'll need to verify that the capacitor selected will fit within the space available by checking the measurements.
Air Conditioner Capacitor - Run Capacitor
The other common type of air conditioning capacitor is the run capacitor. These are used on both single and three phase compressors and fans but are split into two main groups: Single unit (standard) run capacitors and dual-run capacitors.
A single unit run capacitor is used to continuously adjust current or phase shift to a motor's windings in an effort to optimise the motor's torque and efficiency performance. All run capacitors are designed for continuous duty, and as a result, have a much lower failure rate than start capacitors. A single unit air conditioner capacitor will have 2 connections and will be dedicated to optimising current on one motor.
Dual run air conditioning capacitors are 2 run capacitors in one case. They have nothing else that makes them electrically special. They generally have connections marked "C" for "common", "H" or "Herm" for "Hermetic Compressor," and "F" for "Fan." They will also have 2 different capacitor ratings for the 2 different parts. You might see 40/5 MFD, meaning that one side is 40 microfarads (measurement of capacitance), and the other side is 5 microfarads. The smaller value will always be connected to the fan. The larger connection will always be connected to the compressor.
The dual run air conditioning capacitor design's only advantage is that it comes in a small package with only 3 connections. There is no other difference. In a pinch and even as a permanent solution, if there is enough space for mounting, using two separate run capacitors in place of your original dual run motor capacitor is an acceptable practice.
As with selecting a starting capacitor, these are very simple to select. Start with the voltage, then capacitance, and finally, check the measurements of the selected capacitor to verify that it will fit within the space available.
Who Buys from TEMCo
TEMCo stocks almost every type of Capacitor for Motor application. Common uses include air conditioner capacitor, fan motor capacitor, Single phase starting capacitor, motor run capacitor and many more. Our quality components are used throughout the US and international daily.
Click here for help selecting a motor capacitor. »
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TEMCo's industrial power solutions and MG sets are chosen for the most demanding applications, by some of the best and widely known companies in the world. Our quality products are being used throughout the US and internationally every day.
TEMCo's regular customers include: Varian Medical, Applied Materials, Apple Computer, ESPN Networks, NASA, General Motors, American Family Radio, Kaiser Permanente, Nordstrom, BAE Systems, UC Berkeley, Navy Public Works Center, US Army Executive Service, FORD, MIT, Stanford Linear Accelerator (SLAC), Lawrence Livermore National Labs (LLNL), and many thousands more.
All orders less than 50 pieces are shipped USPS First Class or Priority Mail and will arrive 1-3 days from the day of shipment.
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20 MFD 370v Round AC Electric Motor Run Capacitor HVAC 370 vac v volts 20 uf
"Super fast shipping. Remember this company for your motor needs."
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"Fast shipping, well packed, great price, answered questions, fast = Capacitor for Motor 5 Stars."
25 MFD 370v Round AC Electric Motor Run Capacitor HVAC 370 vac v volts 25 uf
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Need help with selecting your Motor Capacitor? See our Motor Capacitor FAQ. click here. »
What you need to know when selecting a Replacement Capacitor. click here. »
Need help to Test Capacitor condition? click here »
What is a Starting Capacitor and what they are used for? click here. »
What is a Run Capacitor and what they are used for? click here. »
How do I select an AC capacitor? click here. »
Where do I buy capacitor replacements for my motor needs? click here. »