CSRU2 CSR-U2 AC Hard Start Kit AC For 521 Compressor Saver Replacement for HVAC Hard Start Capacitor 3.5-4- 5 Tons Hard Start Kit

★★★★★ 4.8 36 reviews

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$27.99
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Management number 216304296 Release Date 2026/04/19 List Price $11.20 Model Number 216304296
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How to replace a CSRU2 CSR-U2 AC Hard Start Kit? 1. Turn off the power to the air conditioner unit. You can do this by switching off the breaker in your electrical panel or disconnecting the electrical plug. 2. Locate the hard start kit on your air conditioner unit. It is usually located near the compressor and consists of a small metal box with wires coming out of it. 3. Disconnect the wires from the old hard start kit. Make note of which wires go where so you can connect the new kit correctly. It is also a good idea to take a photo or make a diagram for reference. 4. Remove the old hard start kit from the air conditioner unit. Depending on the type of kit you have, you may need to unscrew it from the compressor or simply pull it out of a clip. 5. Install the new hard start kit in the same location as the old one. Make sure it is securely in place and connected to the compressor. 6.Connect the wires to the new hard start kit according to your notes or diagram. Double-check that they are connected to the correct terminals. 7.Turn the power back on to the air conditioner unit and test it to make sure it is working properly. Capacitor has been pre-wired for you. There are only 3 color coded wires which need to be connected. The Black wire will be connected to the Common side of the compressor. The Striped wire will be connected to the Start winding of the compressor and the Red wire will be connected to the Run winding of the compressor.

  • ♲The Cps For 521 Csru2 Capacitor utilizes a strong multi-facet starting capacitor and a smart switch to give your blower the improvement it requires to start up rapidly, more reliably, draw less power and set aside your cash, as well. The CSR-U2 exact equivalent part works with 3.5 to 5-ton AC units. Larger units require a larger capacitor.
  • ♲Our appliance parts will help you to make a fast replacement for your AC unit. Simple manipulations will help you to fix everything within few minutes.
  • ♲Wear work gloves. DIY project something can be a messy, intensive process, and it is important to take safety precautions to avoid cuts and injury. One of the best ways to do this is by wearing gloves whenever you are working on a home repair. It will help protect your hands from sharp objects, debris, and other potential hazards.
  • ♲Clean up any spills or messes immediately. Cleaning up spills and messes is important during a home improvement project because it helps prevent damage to the device or equipment. Spills of liquids like oil, water, or cleaning solutions can get into sensitive electrical components, causing corrosion and other dangerous problems.
  • ♲Disconnect appliances when not in use. It can help reduce the risk of electrical shock or other injuries. Additionally, it can minimize the risk of damage to the appliance, which can save you time and money in the long run. Finally, it can help minimize energy consumption, which is important for reducing your carbon footprint.
Brand Name USonline911
Item Shape Rectangular
Manufacturer USonline911
Material Type Aluminum, Ceramic, Plastic
Mounting Type Flush Mount

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