Furnace stopped working in the evening, with an outside temperature of -35, a day after a big furnace company looked it and said everything was in working order. Phoned the big company and they said they couldnt come in until the next morning, temp was -30 to -40 overnight. None of the other furnace repair places could send anyone until the am. Nanos came recommended from a friend who was looking at google reviews. Called them and they were at our house in about an hour of calling time. Junior assessed called his brother, who had the part and Nader was at our place with the part in about an hour. Part replaced and furnace up and running in less than an hour of Nader showing up.