[Guy]

The starting capacitor for the middle basement Duo Therm a/c unit has finally given up. 35 years is a good run. It does look original and unmolested. I thought it prudent to replace the start and run capacitors at the same time, although the run capacitor meters out just fine. Both replacement capacitors are smaller than original, although the run capacitor is 1/3  the size of original, but has the same spec 370 volt 5 uf or mf. Is it because the originals were made in America and the are Chinesium? Am I missing something? I have not installed these yet because of these questions.