Furnace Should I Buy — What Efficiency

Buy a 95% AFUE or higher furnace. In these regions, the heating season is long enough that the 15%–20% fuel savings compared to a standard model will typically offset the higher upfront cost within a few years.

A standard 80% AFUE furnace is usually sufficient. The extra cost of a high-efficiency unit may never be recovered because the furnace runs so infrequently. 2. Consider Installation Complexity what efficiency furnace should i buy

The physical location of your furnace can significantly change the "real" cost of upgrading. Should I Get An 80 Or 95 Percent Efficiency Furnace? Buy a 95% AFUE or higher furnace