both with alaskan heating & air-conditioning. >> you go outside and see the cars, pumping out a bunch of smoke, let me get home and breathe in clean air. not the case. indoor an often worse than outdoor, why is that? >> people don't realize there's so many chemical ins our furniture and carpet. we're using the chemicals to clean the house as well. there's no regulation of how many chemicals can be in a home, and people are breathing that, and there's no way to clean it. in the extreme climate we're in, if it's really cold or hot, we open and we trap the polluted air in our home. >> during extreme temperatures in the summer time, it's worse? >> absolutely, the less you go outside, the more you're breathing the air indoor. >> and the homes are built now to be sealed. tight. so what are the symptoms then of toxic air? you're hacking up a lung, i've had my air ducts cleaned before, and i know how much better i was breathing after it was done, this can really affect your health. >> no doubt. being fatigued, asthma, and all the things that come with either allergies or not being able to bre