Do all ceramic heaters turn off automatically?

[NationalMatch]

I've got an uninsulated hunting cabin that has propane heaters. I'd like to back those up for the plumbing and water heater with ceramic heaters.

I bought two such heaters from Sam's but am looking at the instructions. It says, "After 3 hours of operation the unit will beep and enter cool down mode before switching off. If you would like to extend the operation for an additional 3 hours, press the 'extend button.'"

I need it to maintain an above freezing temperature for the kitchen and for the water heater. I might not be there every week.

Are ceramic heaters just made like that?

 

[rickm]

I prefer the radiant oil heaters myself they are safe and less likely to cause a fire. And they dont use that much electricity either.

 

[cowadle]

there are electric milk house heaters that use ceramic or resistance coils or whatever. most of them have a type of bimetal thermostat that can be adjusted to turn them off when the room temperature meets that level you set it to. and a good one will have a mercury switch in them so if it tips over it will shut off. i don't think any of them are more efficient than any other because of the btu conversion of electricity through resistance is pretty much fixed. also unless the heater is a 220 volt unit or something else special like a base board heater they most always won't be any bigger than 1300 watt or 1500 watt because of the resistance draw on a normal house hold plug won't support any more amps safely.