This is the house that I lived in in the early 1980s. Some panels provide solar heat and solar water heating. We also had a large granite water heater in the basement. It carried the new hot tub and the heat for the house. The heat came from the solar heat, but a small blower in the attic provided enough warmth for the windows to remain open after a blizzard. We also had a wind generator to help with energy.
PS: It was great fun to answer solar sales calls back in the day and let them know what we had on the home.
PS: It was great fun to answer solar sales calls back in the day and let them know what we had on the home.