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Posted by geo on October 14, 2009 at 21:49:51:
In Reply to: Re: BTU input -vs- BTU output posted by HeatPro on October 13, 2009 at 09:08:19:
heatpro, forgive my ignorance. the question should have stated 70,000 BTUinput 50,000BTU output.with that clarified can you explain the difference(s)