No matter how exposed or 'used to' these Canadian Winters we get, every time February and March come we're all just sick of the slipping, sliding, shoveling, and other nuances of the cold months. “Think Spring” is a common sentiment but it's much more than the thoughts of birds chirping and flowers growing.
Furnaces can last for a long time, but like anything else, they will wear out eventually. There are many ways to tell if you need a new furnace. Some are easy to check by asking yourself a few questions: