I wanted find out if my small AC (5,250 BTU using 540 watts) could provide some heat to a small laundry room. (525 cu ft).
2 feet above the basement floor the air was about 61 degrees.
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About 5 feet above the floor the air was about 66.
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Air input side from the main basement.
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Hot air output inside the laundry room.
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After about 20 minutes it went up to 70-72 inside the laundry room: (that 63.9 reading is off, it's really closer to 61).
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I went inside and it was WARM in there! Up high, it was hot.
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It also took some humidity out of the main basement air.
I think this proves that 540 Watts can space heat my bathroom, which it right above the laundry room..
With a larger BTU AC, I'm sure that a 5 degree gain would occur within a few minutes.