Typical life cycle for a Heating and Cooling System is 15 to 20 years. Usually they start having parts replacement issues at around 10 years and more serious problems as they near the end of their life cycle. If you are facing an expensive repair, say a compressor replacement or a furnace heat exchanger, you should give consideration to new equipment. If you decide to do the $1000 repair, you may just be postponing the inevitable replacement by a year or two. You may have another expensive repair come up again soon. Reasons to move ahead with the system replacement would be:
