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Posted by HeatPro on September 14, 2005 at 23:38:19:
In Reply to: Installing an Old Coal Boiler in a home posted by Dan McCartney on September 14, 2005 at 16:22:43:
As a coal boiler, they were about 45% efficient, as the passages had to be wide open to permit less frequent cleaning. Converted to gas, they dropped to about 35% eficient; but that is not your concern if you are going to use it for coal. Shouldn't be a problem.