Does anyone here know about water heaters? I haven't been using my tap water for the past two weeks because of the chemical spill and this evening I realized for some reason I have no water at all.

I called the water company and they are going to send someone to see if perhaps my meter or my pipeline has frozen.

I was going to shut the breaker off that goes to the water heater but the water heater is on the same breaker as my heat pump. That's a dumbdecision to wire it like that.

Do water heaters have sensors to keep them from overheating? I had one in the past that blew hot water out of its safety valve but I am concerned there isn't water in it.

I hate to turn the heat pump off as it is only 3 degrees F outside. I have a smoke detector in the garage where the water heater is located. Not sure if this is a big problem or a small problem.