I have a 2.5Kw ceramic fan heater which recently appears to be outputting less heat than it did when it was new.
My theory is that there are 2 separate heating elements because there are 2 heat levels - and I think one of them has failed. Obviously, if I'm right, it will be consuming less power than 2.5Kw on full output.
I don't own a power meter and my home power usage is too erratic to use the main house reading to tell the difference between 1.25Kw and 2.5Kw.
How can I tell the power usage of this heater to be reasonably sure whether it is running 1 element or two?