Can anyone give tips on replacing a/c and furnace?

curlydoglover

We have builder-model Carrier central A/C and forced-air furnace units. The a/c is actually dead, so it has to be replaced regardless.

However, from the little research I've done, it seems advisable to replace both at the same time.  Not sure how true that is?

Is there anything we should know about this process?  

ETA: the rest of the post (stupid nest).  Also, apologies for typos. Typing with a bandaged finger (stupid mandolin).

jennylove1084

Ive never heard that.  We replaced our furnace in Nov and will not replace the ac unit til it dies.

TheWop

If it ain't broke don't fix it!  I would just replace the A/C.  You do get a better deal if you purchase together, but if your current unit works fine there should be no need to replace it.  I'm sure companies will try to sell you on a newer more efficient model, but if there's nothing wrong with the current one, tell them no thanks. 

kmgrecco

My H is a plumber, combined with an HVAC company.  It is advised that you replace both at the same time (we are actually doing that next month).  They contantly make changes to the units that may not make them compatible with older units.  You are better off spending the money at once, making sure that the units work together.  Chances are that you would be fine as long as they were being replaced within a couple years of each other.. but better be safe then sorry.  You'd hate to spend a couple thousand dollars, only to have to spend that again a few years later to replace.