I'm in the Midwest and for me to run a 600w light a 440 cfm fan and a 9000 BTU air conditioner it cost me about $55 a month. Btw I run my air conditioner 24/7 because you want about a 10 degree drop in temperature when lights go off.With 1000 watt light carbon scrubber and 400 cfm fan. And ac on 12/12
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