High Efficiency Furnaces. Prices Comparison. We take the confusion out of buying new furnace or upgrading to a new one..Replacing a furnace can be a very expensive but very important ordeal in the life of a home owner, and even more important if said homeowner lives in a cold climate during the winter! This article provides a guide on purchasing and use of the different types of furnaces as well as theociated furnace replacement.Homeadvisor’s Electric Furnace Price Guide offers average cost information from topnds and manufacturers. See Electric Forced Air Furnce Installation Costs as reported by homeowners..HomeAdvisor’s Furnace Cost Guide lists pricesociated with installing or replacing a furnace including labor and materials, as reported by HomeAdvisor customers..