Is your house bursting at the seams? Do you long for private office space, a guest retreat, or a kids’ bonus room? The solution might be right over your head: no need to leave the neighborhood, or even put on an addition.
Changing energy markets and evolving technology make it possible to heat, cool, and ventilate homes of any age with (mostly) clean, all-electric power—and less of it. Heating home water, formerly an energy hog, is turning into an energy sipper, too.