My wife and I recently purchased our first home and during the inspection the inspector commented, "The furnace is quite old and you may want to consider replacing it. But for now... it works fine." That was two years ago.

The Furnace:

Crano 140,000 BTU
Made by: Crane & Ordway Co.
Serial Number 1060

I Live in Minnesota and we are subject to harsh winters. Any thoughts on whether or not I should replace this. If so, any furnace and/or contractor recommendation for the MSP area would be appreciated.