Comment: One cost you forgot in your math -

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One cost you forgot in your math -

What is the cost of the "red-neck" air conditioner, and what is the cost of the window A/C? How many bags of ice could you buy for the cost of that 5000 BTU unit?

And actually, this was for a temporary 'spot' cooling. Somewhere that you may not want or are unable to mount a window unit.

No one is trying to get something for free. Most of us understand TANSTASFL.