WebHVAC and Furnace Price Guides offer up-to-date price estimates on Ducane furnaces. The Ducane 95G2V two-stage gas furnace ranges in price from $1,949 to $2,789, depending on the heating capacity, according to WebHVAC. The 95G2V is 95 percent energy efficient, with 44,000 BTU to 135,000 BTU capacities available.
For a single-stage Ducane furnace, the 95 percent efficient 95G1E costs between $1,589 and $2,389, depending on heating capacity. The 95G1E is available in capacities ranging from 44,000 BTU to 132,000 BTU. For the less-efficient Ducane 80G2V variable-speed gas furnace, prices range from $1,859 to $2,369. This 80 percent efficient model is available in 66,000 BTU, 88,000 BTU and 110,000 BTU capacities.
Ducane oil furnaces have an average base price of $1,650, reports Furnace Price Guides. This average price is based on an 85,000 BTU fixed-speed oil furnace.