Reply by crank49

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Posted on Small shop heating question

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4030 posts in 2970 days

#1 posted 11-08-2012 02:11 PM

3000 watts is about 10,000 BTU which would cost about $237 a month if it was on 100% and at a rate of $0.11 per KW, so you are estimating the heaters to run at 33% duty cycle?

A gallon of propane contains 91,000 BTU which would heat the shop the equivalent of 27 days at the same duty cycle as the electric proposed above.

Well, a vented propane heater will probably require twice as much gas due to flue losses but still, looks to me like propane would have to be $40 a gallon for electric to be equal.

Here in Tennessee I only pay $2.17 per gallon for propane. I heat my whole house with it because I’m miles from the nearest natural gas line.

There is a safety factor to consider though. I might go with a small electric to keep things from freezing when unoccupied, but a propane salamander or radiant type heater for when I’m working there.

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