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Description
5-2-1 CSR-U1 Hard Start Capacitor Kit for 1 to 3 Ton AC Units5 2 1 CSR U1 Hard Start Capacitor Kit Key Features Two wire hard start kit for single phase compressors Includes a potential relay and start capacitor Reduces compressor start up time and energy consumption Assists older or tight compressors with starting Installs in series with the compressor run winding Replaces Cross Reference Part Numbers CSRU1 SPP6 SPP5 RCO410 RCO810 RCO410D 88 5440 HN61PC005 HN61KA023 CKFU1 Compatibility & Fitment Designed for 1
5-2-1 CSR-U1 Hard Start Capacitor Kit
Key Features
- Two-wire hard start kit for single-phase compressors
- Includes a potential relay and start capacitor
- Reduces compressor start-up time and energy consumption
- Assists older or tight compressors with starting
- Installs in series with the compressor run winding
Replaces / Cross-Reference Part Numbers
- CSRU1
- SPP6
- SPP5
- RCO410
- RCO810
- RCO410D
- 88-5440
- HN61PC005
- HN61KA023
- CKFU1
Compatibility & Fitment
- Designed for 1 to 3 Ton (12,000 to 36,000 BTU) air conditioning and heat pump units
- Compatible with single-phase 115V to 288V systems
When to Replace
- Compressor hums but struggles or fails to start
- A/C system causes significant dimming of lights on start-up
- Circuit breaker trips when the compressor attempts to start
- Proactive installation on older units to extend compressor life
Installation Tips
- Disconnect all electrical power to the A/C unit before installation.
- Safely discharge any existing capacitors in the system.
- Connect the two wires from the kit to the compressor's "Run" and "Common" terminals.
- Mount the device securely inside the electrical control panel.
- Professional installation by a qualified HVAC technician is recommended.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Most durable ball!
Size: Medium
This are my dogs fav ball 😍 they last forever!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 4
Chuckit medium rebound balls
Size: Medium
My 8 month old German shepherd dog loves these balls. They are easy to throw, they bounce great, they are very chewable! She keeps one in her mouth most of the time. It satisfies her need to chew and she does not chew other things. She drops it in the water and lets the hole fill up and drinks that way. The only problem that has caused is suction in her mouth and difficulty in dislodging it for her. However, she would be lost without it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2023
★★★★★ 5
These are definitely indestructible
Size: Medium
Both of my dogs can destroy a ball in a matter of minutes if I let them play with them (supervised) as is. Well not with these balls. They are the ONLY ones I have found that are 100% indestructible. Please only let your dogs play with these as a toy when supervised though. They go really far when throwing them, so both dogs get a good amount of running and exercise with these. I also bought these because they have the hole in the middle of the ball which is very important in the event that a dog gets one stuck at the back of their throat. This allows them to breath unlike those without this hold. It's an unlikely event, but as dog owners, we all need to be aware of this and educate ourselves on what to do if this SHOULD happen. This isn't a scare tactic, nor a reflection of this particular brand, it can happen with any type of ball. My two dogs are about 45ish lbs and the size is perfect for them, I don't want anything smaller than this. They love them. There is no annoying squeak. Really easy to wash after use. Some balls take forever to get the slimy saliva off, but these don't.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 25, 2025
★★★★★ 5
He loves this ball
Size: Medium, Size: Medium
My dog loves this ball. It’s the perfect size, he enjoys playing fetch and this ball has been his fav one. Thank you guys for making my lil one happy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
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