I have a 45ish year old GE central air unit (before trane bought them). Our furnace is a Lennox from 1997. As of now both still work. The furnace got us through our first winter in the house no problem. I haven’t needed to run the A/C much but did try it out on a warmer day recently and it was blowing cold air. Oh located in Michigan.
I’m able to get new furnace, a/c, coil, lineset for roughly $4500 (budget equipment). Would be a self install so no labor cost. Won’t be in house more than 5-10 years.
Do I just replace them now to avoid being without A/C if it breaks down this summer. It was repaired last summer by the previous owner and I don’t think he used it much anyway.
Or just let it ride until it quits and worry about possible higher prices during peak season.