The paper concludes with some broader lessons from the Irish experience for. Eurozone economic policy and some observations on the role that EMU and the ECB have played in. Irelandâs crisis. 1 Paper presented at Bank of Greece conference on the Euro Crisis, Athens May 24, 2013.
The average life span of a gas furnace is approximately 15 years, compared to 20 to 30 years for an electric furnace....
 Typically a furnace or air conditioner will last 15-20 years. or ... a gas furnace should last from 20 to 25 years.. In your milieu, I'd expect at least 25 years.