Work, yes. They light up when they are supposed to. But the circuitry inside them has a tendency to interfere with the radio signals used by the remote control devices, either physical boxes or the buttons in your car you can program (this is directly from a garage door install/repair company who would only benefit if you had problems). This leads to intermittent functionality problems. Sometimes it's fine. Other times, you can sit in your driveway 15 feet from the opener and it won't open. Our current garage door opener specifically says to use incandescent bulbs.