I had a gas insert installed in my fireplace four years ago.  A neighbor told me that I should have it professionally cleaned.  The people who installed it want $100 to check everything out.  It is working just fine.  Google was not much help.  Has anyone had maintenance done on theirs?  This is a complete insert with glass. Not the type that you set a few logs in and run a burner beneath.
			
			
				
		
			