I'm trying to determine the pros and cons of having a wood boiler
installed on my property. If you haven't heard of these, the boiler
is built to circulate water around the firebox. The water gets pumped
into a heat exchanger which is located in the main heating duct of the
house. The existing indoor furnace pushes the air around the house.

Anyway, I'm looking at a Heatmor boiler, and I'm now looking for
people who have experience with these. The website says that the
boiler has a forced draft fan (75 cfm). It also says that the boiler
can heat a 3000 square foot house. I know a little about combustion,
and I calculated that with 75 cfm, you cannot burn more than 10 lbs of
wood an hour. And if the wood is 45% moisture, then the available BTU
is around 40,000 BTU. A 40,000 BTU furnace is very small for a 3000
square foot house.

So, has anybody dealt with these Heatmor furnces? Can you tell me
anything about performance and maintenance?

thanks,
FB