I have several AC units in my house. One of the units is only blowing warm air, and I saw that the outside fan was not moving. I opened it up and it was full of cobwebs. After brushing everything out, I saw there was a "Super Boost Relay and Hard Start Capacitor, SPP6" attached via two black wires to the capacitor. I checked other units, and this HSK is not present on any of them.
I'm pretty sure we had a similar problem with this same unit, so I'm guessing the tech installed this HSK at the time. It is now melted and it two pieces. I didn't remove the capacitor yet, but it may be slightly bowing at the top.
Is it fine to just replace the capacitor? This is not a unit that is the biggest among my units, nor is it servicing the biggest zone in my house. I understand this HSK is a "boost", but was this likely a quick, cheap fix by the tech? I called the tech company, and they said they didn't scam me, but it was likely a cheaper fix that replacing a bad compressor.
Any ideas? Can I just go to a local supply store and replace the capacitor? Is it wise to get a new HSK as well, or is that unnecessary?