Deepinder Singh, a Minnesota entrepreneur born in India, met the girl he would marry on a school bus in Punjab Province about 30 years ago.
Singh, 40, a computer scientist, followed his wife, Dr. Manpreet Kanwar, to her medical residency in Detroit. In 2003, they moved to Mankato, Minn., where Kanwar took a position as a cardiologist at the Mankato Clinic.
The couple have two daughters, age 8 and 6.
And that's also where Singh's award-winning small business, 75F, was born.
"We moved into this big house in Mankato and we had a newborn baby, our first," Singh recalled. "The problem was the thermostat was not in her room. Her blanket would come off, and the room would get cool and she would cry. Once I figured it out, I put a temperature sensor in there. And I noticed it was much cooler in that room.
"As a self-respecting engineer, I had to form a company to solve the problem."
Singh had worked on network systems for the huge likes of AT&T and Verizon. He started in with a friend on the software for a new kind of residential temperature-control system.
Their efforts won an "eco-imagination" award from General Electric in 2011, but they concluded, after talking to reluctant retailers, that it would be tough to compete against the likes of Honeywell and other big players in that market.