I upgraded my furnace to better handle a/c coil airflow. This is a Coleman Evcon DGAT090BDD with natural gas orifice that could be converted to propane. It is downflow with base compartment for air conditioning. I replaced the blower motor in the last year. In 15 years the igniter has failed twice but is an easy fix, current igniter new last winter. Comes with spare igniter and spare parts.
This would be great for heating a garage (or home) on a permanent or intermittent basis. Asking $50 cash in Three Forks, MT 59752.