Breaker for bathroom heater
	
	
		Is a GFI breaker required for a 240v electric bathroom kickspace heater?  I have run 3-12 romex from the panel to the location (under vanity cabinet).  The heater and it's wall thermostat are the only things on the circuit.  I believe I need a 2-pole 20A breaker, but I was not sure if GFI was required.  It makes sense to me to have one, but it seems like they are not common and quite expensive.  Home Depot guy told me it was not required, just wanted to check.  If not, I wonder why?  I have a Square D HomeLine panel.
Thanks