re: AC went out, need advice on what' is being recommended

quote:

---

If not already done, I think you need to get someone to have a really good look at your heating unit to be sure the heat exchanger is in good shape, while you could save some dollars by not replacing the heater, you sure don't want to have to replace that unit a year from now...

---

This. I would add that replacing the evaporator coil could involve rebuilding the plenum to accommodate a different size. If so, it just makes sense to replace the heating unit too.