Yeah.... I hate to say it but they just don't make them like they used to.  I have some old visi-therm heats and they are still working ....... probably 30 years old. 
 
Also they had that little problem with exploding heaters........ or was that another company? 
 
Cheers, 
Vic 
		
	
		
		
		
		
		
	
		
		
	
	
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