nay, gas condensing furnace cools the exhaust below 212*f so to extract more heat from flugas involving a MH like operation. Youre thinking of a direct vent DV burner ithinxspirilis said:One that uses the exhaust heat to preheat the combustion intake air (not the whole friggin' room), aye?~*~vvv~*~ said:duh, whats a condensing furnace?DAKSY said:+1 to Backwoods Savage's comment - Pay no attention....
+2...& I'm waiting to see if he suggests using the MH on VF in the Gas Forum... :roll: