Our house is 2600 sq ft and was built in 1969...
it isn't of the most efficient construction.
Here in S.E. Texas we've had nearly unbearable heat.
Yesterday the temp in the car read 109 degrees.
Our AC stays set on 68, it runs ALL the time and our house stays around 75.
Our NEXT house will be new construction and a heck of a lot more energy efficient!