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		 A basic natural gas or propane, atmospheric discharge with a standing pilot has a mid 80% efficiency rating, plus if you lose power you will still provide hot water.  
 
Very simplistic piece of equipment with no moving parts. 
Posted from my iPhone/Mobile device 
		
		
		
		
		
		
			
				  
				
					
						Last edited by 5/0; 04-17-2015 at 06:43 AM..
					
					
				
			
		
		
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