Product review (5 stars): I highly recommend the SPP6
My Yamaha EF2400is generator was having a tough time running my RV's new Dometic Brisk Air II 13.5 a/c. I could always get it to work but I had to fiddle with the thermostat and fan speeds several times to get the a/c to start so I wouldn't overload the generator. I installed the Supco SPP6 hard start capacitor and it made a huge difference. The Yamaha now laughs at the a/c load, it doesn't work nearly so hard, and the a/c starts everytime...I highly recommend the SPP6!