If you have a dimmer switch, it is common for these to get warm–it is simply a function of how they operate. If it is not a dimmer switch, however, and the switch is hot to the touch, you’re facing one of a few possible problems:
- Overloaded switch
- Failing switch
- Faulty wiring
No matter which one it is, it should not be ignored if you want to avoid a serious electrical fire in your home.