I've seen EER listed as both Energy Efficiency Rating and Energy Efficiency Ratio, although they amount to the same thing.
Assuming the EER of 10, your original figures would then be:
Current = 15000 BTU / 1200 = 12.5 amps.
But keep in mind that that figure is based on my quick search showing that 10 is a reasonably good EER.
I'm not sure what the average p.f. would be on these units, although I would guess that they're capacitor-corrected to keep it as high as possible.
There must be some of you other guys with experience of these units. Anyone???
