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Living in a colder area, I've seen a
lot of use of those portable heaters (we call them torpedo heaters due to the
physical look of them). About 10 years ago, a very respected local builder
was using them in a basement on a construction site (no structure, but basement
walls at the time) to heat the area enough to pour the cement floor. I
can't remember if he had plastic over the walls, or if the floor had been
installed already. The home was being built for his daughter and
son-in-law. The son-in-law (a friend of mine) came over to see what was
being done that morning before going to his normal job, and found his
father-in-law passed out on the floor. Long story short, he never made it;
died of CO2 poisoning.
These types of heaters have a tendency
to create a lot of condensation as well. As Jeff and others have said, use
a system that does NOT introduce CO2 into the work area.
I am presently constructing a solar
heating system on the south side of my hangar. With $1,000 a year bill to
heat my hangar to just 45 degrees, I suspect this system will save me $400 to
$500 a year, with a cost that will be recovered in about a year. Here is a
link to the system if anyone is interested.
Tom Sullivan
KIMT
(Tropical section of the U.P. of
Michigan)
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