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  • Compressor Saver CSR U1 Hard Start Capacitor
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Compressor Saver CSR U1 Hard Start Capacitor

| 9 answered questions

Price: $34.73 & FREE Shipping
In Stock.
Ships from and sold by HVAC MEGA STORE/PATRICKS SUPPLY.
  • Extends the life of your compressor
  • Protects internal components
  • Starts A/C in 30-50% less time
See more product details
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$34.73 & FREE Shipping In Stock. Ships from and sold by HVAC MEGA STORE/PATRICKS SUPPLY.

Frequently Bought Together

Compressor Saver CSR U1 Hard Start Capacitor + Compressor Saver Hard Start Capacitor Model CSR U2 + Compressor Saver Hard Start Capacitor Model CSR U3
Price for all three: $104.10

These items are shipped from and sold by different sellers.

Buy the selected items together


Product Information

Technical Details
Part Number CSR-U1
Item Weight9.6 ounces
Product Dimensions6.7 x 4.7 x 2.3 inches
Item model numberCSR-U1
Item Package Quantity1
  
Additional Information
ASINB003FNMADE
Best Sellers Rank #102,165 in Home Improvement (See top 100)
Shipping Weight9.6 ounces (View shipping rates and policies)
Date First AvailableApril 6, 2010
  
Warranty & Support

Product Warranty: For warranty information about this product, please click here
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Product Description

Starting up is the hardest time in the life of any type of electrical equipment. Ever notice that light bulbs almost always burn out when you first turn them on and not while they are on? This is due to the huge current that rushes in when a switch is thrown and power is first applied. Your air conditioner uses anywhere from 5 to 10 times more power on start-up than it does while running. With this burst of power comes a surge of heat that accompanies the electrical current. This heat damages the compressor, the terminals, the windings and run capacitor - all vital components of your air conditioner. The 5-2-1 Compressor Saver® protects these components by significantly reducing the amount of time it takes for your compressor to start - in some cases up to 50%. This means your air conditioner and compressor will bear ½ the stress, strain and heat each and every time it starts. Considering that your air conditioner may start up more than 6,000 times in a single cooling season, the positive impact that the 5-2-1 Compressor Saver® has on your air conditioner is significant. Before you replace your air conditioner, try adding a 5-2-1 Compressor Saver®. The 5-2-1 Compressor Saver® might save you from having to outlay thousands of dollars to buy a new air conditioner or compressor. At a fraction of the cost, installing the 5-2-1 Compressor Saver® is a wise investment.

Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
5 star
59
4 star
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3 star
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See all 65 customer reviews
To put it simply, THIS HARD START KIT WORKS!
tvdaytonaFL
The instructions were clear and the installation was easy enough, although I am a facility engineer with experience in the field.
R. Seehoffer
WELL worth the money and I will buy again if needed.
Randall C. Martin Sr.

Most Helpful Customer Reviews

21 of 22 people found the following review helpful By Steve on October 2, 2010
Verified Purchase
This kit is great for any type compressor (scroll or reciprocating). Easy to install & will not harm compressor windings because of the lower capacitor rating (88-108uf). (If you need a Hard Start kit to try to free a stuck compressor you will need a kit with a much higher uf rating.) This kit lowered my start up amperage by 10 amps. If you are thinking of buying a 2 wire kit - think twice because most of them work on a thermistor and will only work once and not again until the thermistor cools down and on a hot day that could be awhile. Since a 2 wire type operates on temperature and not on the run speed of the compressor it could stay in the circuit longer than needed or not long enough. This 5-2-1 kit removes the capacitor from the circuit when the compressor reaches a certain speed which is done by the relay sensing voltage.

I emailed the company to ask a question about the type of relay that they used & received an answer back the same day from one of their technical engineers. How refreshing it is to get a prompt response from a company these days.

You may spend a little more for this start kit but is well worth it as it should last longer than a 2 wire type and is safer for your compressor.
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9 of 10 people found the following review helpful By Falconbrother on June 7, 2012
Last year I had the HVAC guy come out and work on my AC compressor. He used a two wire hard start kit to get my compressor going and said that I had a "tight compressor". The compressor worked for the hottest months of the year then quit again. When it quit it took the contactor and the transformer with it. I decided to take a chance on this hard start kit. I replaced the contactor, the 115 volt to 24 volt transformer and I added this 521 kit. The compressor came on and I have had nice cool AC this summer.

I did a lot of research before buying the 521 kit. I would recommend that anyone who wants to install a hard start kit avoid the two wire kits. All the reading I did indicates that over the long haul they are trash. Spend a few extra bucks and get this kit. It works great.

BTW, My unit is a 2.5 ton residential unit.
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7 of 8 people found the following review helpful By tvdaytonaFL on September 16, 2011
A couple years ago my central AC unit started blowing hot air, so I called the original AC installer to come take a look at it since it was still under warranty. The technician installed a hard start kit (two wire version) to the compressor on the outside unit, it seemed to fix the problem...sometimes. The next summer I noticed that the same problem started happening again. Instead of calling the technician again and have him do another worthless repair, I decided to look into the issue myself and learned that the problem with my AC compressor not switching on could be fixed with installing a "better" hard start kit. This 5-2-1 three wire kit seemed to be highly recommended, so I wanted to give it a try. So I took out the worthless two wire kit previously installed and replaced it with the 3 wire 5-2-1 kit. It was pretty simple to install. I think most people with basic tools and who are comfortable with working with electrical wiring would be able to do this. To put it simply, THIS HARD START KIT WORKS! As soon as I put it in, my compressor has switched on every time and it starts immediately. Solved my compressor issues!
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3 of 3 people found the following review helpful By B. Allyn on January 15, 2014
Verified Purchase
We installed this on our 10 year old 2 ton outdoor unit. We could tell a difference right away. The system was not having to work as hard and the unit is a lot quieter while running outside.
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5 of 6 people found the following review helpful By Yosemite Drinkie Poo on April 14, 2012
Verified Purchase
Dose what it claims to do and I did not need to hire someone to install it. It was easy, and I am not that technical , just follow the diagrams and you can't go wrong. I love this freakin thing!!!!!!
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2 of 2 people found the following review helpful By Colt Boyd on June 22, 2014
I bought this to enable my 8KW/10KW generator to start my heat pump system. It works beautifully. It dropped the L.R.A. from 67 amps to less than 20 amps. This allows my 8KW generator to start and run the heat pump which was previously impossible.
Installation was a breeze. Anyone capable of understanding a basic wiring diagram should have no problem.
I couldn't be happier with this product.
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4 of 5 people found the following review helpful By mvas800 on March 6, 2012
Verified Purchase
Very easy to install. Cut down on compressor start-up noise. Start-up AMP's were 40-45% less. I will be installing these on all my families AC units.
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1 of 1 people found the following review helpful By A.Schott on September 1, 2014
Verified Purchase
Didn't save my compressor, but it definitely made a big difference in the starting performance. My compressor wouldn't start - the breaker would trip instantly. I replaced the contactor and capacitor, but it still dimmed the lights and tripped the breaker instantly every time. Installed this and now it starts better ever, but it only runs for about a second before the breaker trips, which is probably how long it stays engaged in the circuit. I'm still not sure if I have a compressor issue or a problem somewhere else in the system, but it made an obvious reduction in current and started faster than when it was working properly. I'm confident that I have another issue and it would have fixed a healthier system.
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