Gin_Ichimaru
Jul 18, 2011, 09:35 AM
Gas furnaces have been known to last 40 or even 50 years. They have also failed in the first year. Proper installation counts most, then quality equipment.
There are way too many variables to predict when a furnace will fail sight unseen.
Having said all, most modern furnaces are good for around 20 years.
Hope this helps,
Gin.