Skip to main content
Open this photo in gallery:

Home of Dr. John Eckfeldt and Nancy Schultz, Isabella, Minn. Ms. Schultz did a factory tour prior to buying the Mueller windows, shipped from Germany.

1 of 8
Open this photo in gallery:

A view into the main dining area.

2 of 8
Open this photo in gallery:

The main dining room, with barrel roof and 30-inch heavy timber framing.

3 of 8
Open this photo in gallery:

The high-end kitchen makes no concessions to style.

4 of 8
Open this photo in gallery:

Hot water radiators are part of the intricate passive heating system.

5 of 8
Open this photo in gallery:

Solar heat collector vacuum tubes on the garage roof.

6 of 8
Open this photo in gallery:

An array of tubes and controllers in the basement hints at the technology behind the passive heat system.

7 of 8
Open this photo in gallery:

Dr. John Eckfeldt and Nancy Schultz pose beside the plaque confirming the home's LEED platinum status from the U.S. Green Building Council.

8 of 8

Interact with The Globe