I helped take out one of those. it had several hunded pounds of sand,on top.
The top of the furnace tapred in, sort of like the shape of a paper snow
cone container. That made for a LOT of work to get all that sand out. Then,
the sand up the stairs, and dump in the yard.

Christopher A. Young
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"The Daring Dufas" wrote in message
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There are a lot of older homes in my area that I describe as having an
"octopus" furnace in the basement. The furnaces were originally coal
fired and you can still see the coal bins and coal chute in many of the
old homes. The supply ducts slope diagonally up to the main floor like
limbs of a tree or octopus tentacles and the air flow is via convection
with no blower and the ducts are fairly large in diameter. All of them
I've ever seen were converted to natural gas in the middle of the last
century but as inefficient as the beasts may be, they will keep a home
warm in the winter during a power outage. ^_^

TDD