This Maine home can stay 70 degrees without a furnace, even when it's freezing outside

MAINE PUBLIC • January 25, 2023

What if you could design a house that on a cold day in January would stay at 70 degrees inside — without running the furnace? Or even having a furnace? It's already being done. In fact, what's known as the passive house concept came to the United States in 2006, and is being used to construct buildings throughout the U.S.