logic behind the whole green space has shifted in the last four years. it used to be about the bells and whistles of what was green out there -- counter tops, cabinetry. now it's about how to save money on the utility bills. how to be more efficient at home. those are the big buzzwords. when people see utility bills shrinking they are more likely to jump on the green bandwagon. >> one thing is don't put the cold fridge next to the stove. you're losing power either way you cut it. >> location is key. when you want to make sure you know where you are placing things. it's really about sealing your home, insulation. before 1980 only about 20% of homes are properly insulated.