Hello everyone new here, trying to diagnose my A/C problem, and decide if it's worth fixing. Background: About a week ago my A/C died, the fan would not even start, I would just hear buzzing. Did some research and I changed my capacitor, everything worked well for about 5 days, and today my A/C died again, this time through the fan would start and run for 10-30 sec, and then I would see/hear some sparking coming from the black terminal in the picture below and the fan would stop. It might be hard to see in the picture but there is a horizontal tab that was sparking and popping in and out near the blue wire. My orignal capacitor was a 30+5, 380 vac I took it to an HVAC supplier and they gave me a 30+5, 370/440 vac, telling me it was ok to install. I mention this because I called up a random HVAC repairman and after describing my problem, and he said maybe your capacitor is the wrong one. But he didn't sound too sure... Is the capacitor the problem? Did the supplier give me the wrong one? If not what could the problem be, and approximate cost to repair? I was quoted around 2k to install a new A/C so if the problem would cost hundreds to repair I might just pass and get a new one (my ac is from 2008) Thanks for any help

I have 2 through the wall air conditioners. They both are about 750,000 years old, give or take. Not to mention how energy efficient I am sure they are. But one measures 14 x 22 that is the 120 volt type and one is 25.5 x 19, which is the 220 volt type. It seems darn near impossible to find these sizes when searching. The smaller 120 volt is in the kitchen, where the larger one cools somewhat the rest of the house. I am doing my damndest to find 2 that are similar model, just different size. But my question, is it better to do something bigger or smaller than what I have now, size wise? I was thinking each slightly bigger. Reason being, it goes out into my siding, so I would just need to make the hole bigger, and replace my J channel. But if I go smaller, then I have to replace my drywall, siding, and make the J channel smaller. Am I missing something?