Purchasing a home is a very big financial decision, and you want to ensure what you are purchasing is a good investment. This means inspecting various aspects of the home prior to purchasing it, and potentially walking away if things are not in good shape. This extends to the condition of the home's HVAC system, so consider the following things when inspecting the system.
The Current Age
One thing you will want to do is look at the actual furnace and air conditioner in the home and find the manufacturing information on it.