The type of the heating and cooling system you have determines whether you need to replace furnace and AC together. If you have a split system, you do not need to replace the AC and furnace together in certain circumstances. On the other hand, in a packaged system, the AC and furnace need to be replaced together if something goes wrong in the unit.
Here are some signs that you should replace your furnace and AC together.
The following factors can influence the average cost to replace furnace and AC: