gravity heat
Posted by Joe on September 09, 2002 at 01:19:50:
I have a house built in 1908 that still has the original coal buring furnace, which has been converted to natural gas. The system is a simple gravity heat, with output ducts to every room and several intake ducts. I know these are inefficient-is there any way to make them more efficient short of replacing them? Can you somehow add fans to force the air to circulate better? Thanks for any suggestions.

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