I have a 12,000btu and 5,150btu window unit in my house, the 12k keeps the whole main floor at an easy 70F even if its 90+ outside, the 5k unit keeps the master bedroom an easy 65F if the door is kept closed. My last power bill, running both of them quite a lot, plus a server, network equipment, two other computers, and every other normal household item (including electric dryer).....was $71.
Not bad! No need for central air, my 2 year old furnace even has the evaporator on it already...but no need to use it.
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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)