in-wall bathroom heater, supposedly controlled by knob, doesn't always turn off.

[usonian]

6. How far away are you? :-)

I visited my daughter's rental once and the heat wouldn't go off. She thought nothing of it, but it was getting pretty damn warm.

I drove over to Radio Shack (R.I.P.), got a soldering iron and fixed a wire that let go. About 50 or more years of flexing made it part company with its lug.

I suspect there's a thermostat somewhere in the unit that's flakey. Old thermostats used a mercury switch on a big old coil spring. So does my current one. If it's built-in and accessible only by cutting open a wall, try to get a new one installed, or put a little space heater in there and kiss bye-bye to the flakey unit.

Even if one has lowered expectations, any landlord would protect their property from possible electrical fires. Unless they are playing the insurance game.