1) Is the house insulated? Double pain windows? Attic fan? Any trees covering the house? I'm curious what we're working with.
2) Think of better gas mileage vehicles like light potato chips. If you eat the same amount of chips, then you're doing better. Some people, however, think because the chips are light they can eat more... and they end up with just as much fat. Likewise, many people with 35+ mph cars drive A LOT, and it ends up they use just as much gas as those who drive less in lower mpg vehicles. As long as you keep total consumption down, you're doing good for the environment.
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