SUPCO SPP6 Relay/Capacitor Hard Start Kit with 500% Increase Starting Torque

Don’t let hvac pros fool you. These are easy to install, just watch a YouTube video and do it yourself instead of paying hundreds for a “pro “ to do it.

Good quality and price.Does the job and corks for all type of heat pumps single stage .

Easy installation.

I purchased a new 2014 Forest River Travel Trailer that came with a 13.5k BTU Dometic Duo Therm Brisk II Air Conditioner. I also purchased a brand new Yamaha EFI2400ISCH Generator, hoping it would run my A/C unit. The Yamaha manual claimed it would operate most 13.5k A/C units. I figured, brand new generator and brand new A/C unit, so surely it will run mine. I figured wrong! The A/C unit fan came on and as soon as the compressor tried to run it overloaded the generator. Frustrated!!! I got on top of the unit and after pulling off the cover to the A/C unit I found the schematic that showed that a starting capacitor wasn't used on all models. Apparently it wasn't used on mine!I did a little research and found this SPP6 (Not the SPP6E) capacitor. I decided to buy it and after receiving it an installing it my generator easily starts and runs my A/C unit. In fact, it doesn't even bring the generator to full throttle, even when starting the compressor. I was also able to run my converter, lights and the TV w/ soundbar.A little about the installation. It's super easy. You wire it in parallel with the run capacitor. One connection goes to the white terminal and the other goes to the red. (on mine it was one to "herm" and one to "c". The only issue I had is the SPP6 capacitor is too large to fit under or in the cover along side the existing run capacitor. I had to trim a piece off my cover so I didn't cut through my starting capacitor wires and place it outside of the box attached to the outside of the box. I would have liked it if it had fit inside with the other capacitor but it was about 2" too tall. Good news is it looks like the capacitor is inside of a weatherproof case.All in all I am extremely happy that I can now run my A/C unit with my $1400 generator!!!

I bought this a year ago to keep as a spare and recently since I was cleaning our 2.5 ton Goodman condenser I decided to just install it since everything was taken apart already. It's a simple install, just bolt the CAP to the unit next to the existing one, and then for our unit, connect it to the red and yellow terminals on the existing CAP.After reassembly, the first thing I noticed is that the condenser kicks on instantly now, before it would have a ramp-up of 15-20 seconds where it would slowly start up before getting to full speed. Now, that happens immediately. Highly recommend installing one of these.

Great to have especially if you have an older unit that has trouble starting. Easy installation just wish it came with its own self-tapping mounting screw.

Works great.

It is possible that this product does what it says, but my father purchased and installed it on his Gemini 105Mc Catamaran's A/C with no noticeable change in power load. Meaning, it appears this capacitor didn't change anything. I purchased one and installed on our Hunter 37.5, also with no noticeable change. We both purchased because we had read that with this little gem we could start and run our marina a/c off of a Honda eu2000i generator, but that wasn't the case. The Honda eu2000i has the power capability to run the a/c, but not to get over the start surge.We ended up using an ammeter to measure the power surge reduction at startup using a Supco and only realized a 5 amp drop in the start surge. So this device will probably work for someone who has an old compressor, which only needs a slight boost to get it running, but still won't work for someone trying to start their a/c on a Honda 2000. Another device we tried is the Dometic SmartStart, which reliably starts our Mermaid 16,500 btu a/c each and every time with the Honda eu2000i on eco mode.