There is actually a theory that global warming will cause a change in ocean current patterns that will lead to another ice age. OK, so coastal flooding and coral bleaching are not a good thing. Stop and think about what glaciers extending as far south as St. Louis will do for you. That could ruin your whole day. I don't think we will be worrying about chillers then. Just go get some snow off your front porch in June and use that for cooling. That's if you have food to eat and fuel to heat with in the first place.