Ive never owned a home before, and never had an oil furnace as heat source. I am moving to a home in Hamden, Connecticut, with older split system oil.Learn all about furnace installation and replacement costs. Read general heating, ventilation and cooling prices and get free HVAC estimates. CostOwl.com.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!.The national average cost of furnace replacement is $,, with most homeowners spending between $, and $,. This data is based on actual project costs as reported by HomeAdvisor members..
Jump to Average Furnace Prices The average price for a standard AFUE natural gas furnace is around $,..