Why Your AC Needs a New Dometic Start Capacitor

If your RV air conditioner is humming but won't kick on, it's probably time to look at your dometic start capacitor. There is nothing quite like the sinking feeling of being parked in a sunny campsite, the temperature hitting 90 degrees, and your AC unit deciding to go on strike. You hear that low buzzing sound, maybe a click, and then nothing. No cold air, just the sound of your own frustration. Most of the time, people assume the whole unit is shot and start bracing themselves for a $1,200 bill, but the reality is often much cheaper and simpler. ...

February 9, 2026 · 6 min · Escudero Charlotte