When your old furnace has reached the end of it’s effective lifespan that could be an excellent opportunity to not just replace it with a new furnace but to consider a conversion to geothermal. Many people will simply buy a new version of their old furnace expecting to make incremental gains by buying a high-efficiency version of their older furnace. While this replacement will reduce operating costs and will incrementally reduce your fuel consumption, it will cost thousands of dollars to complete the work. By comparison, the conversion to a new geothermal system, while more expensive initially, can reduce your heating costs by as much as 60 to 70%. No new high-efficiency furnace can do that for your family budget.
When you consider the cost of a new furnace or air conditioner into the overall investment cost of upgrading to geothermal, it effectively reduces the cost of the conversion. Before you simply replace an old furnace, consider making the switch to geothermal.