ATMA SUPPLY CSR-U1 Hard Start Device Compressor Saver for 1- to 3-Ton AC Units

Easy to install and does the job.For the past couple years my outside condenser unit has been having a hard time starting when the weather gets hot, around 100-110F. When activated, the compressor buzzes/hums and just wont start. It will try many times until it finally will start but may take 5 or minutes buzzing on/off. When it is buzzing, I can see the lights dim a little in some rooms of the house so I know the circuits are being strained. This has been getting progressively worse over the past year so I decided to buy this hard-start-kit and finally address the issue.Following the instructions and installing was simple enough. Make sure to pull the shunt to avoid a dangerous situation before you start! I did need to add a couple sheetmetal screws (Tapcon) to hold the capacitor and relay inside the wiring cavity. Plan out where everything will go before you start. No need to cut or splice cables if the existing "fast-on" spade connectors are in good shape. I was very pleased with the results. Now that the kit is installed, the compressor starts-up immediately, even on the hottest summer day!My thanks to the manufacturer and Amazon for providing this inexpensive and easy solution.

Easy to install and so far no issues.

My compressor was noisy at startup with an inrush current of 20A. The hard start lessened the noise and brought the inrush current down to 5.5A.

For those who are electricians or homeowners with reasonable electrical experience, this is a very straight-forward product to install.3 pictures:- general installation: easy to install with two screws. Nice and neat- connection to capacitor: You can easily see the FAN and HERM, the C is lower right. Two connections: Red to Common-C, Stripped to HERM- connection to T-side (not line side) common: black wire terminal, not redYou can clearly see all 3 connections I made.When the system was turned on, the relay could be heard to operate, but the capacitor failed in a poof of smoke instantly.I would welcome feedback from the manufacturer, but otherwise I highly recommend against this product. Very disappointing low quality.

starts the compressor rather quickly than without it. does it really save energy? maybe if it usually takes the compressor several tries to get going. easy to install- cut the power!