I have an old Whirlpool central air conditioner. It does still work, though had to be recharged last summer. It is over 20 yrs old, so I don't know how long it will last.

A couple days ago, my father came across a Carrier Tech 2000 TS (i assume condenser unit), that seemed to be new, still in the box, at a Habitat for Humanity Restore.

I know my old unit is Freon, and the carrier is Puron, but is it possible for me to exchange the 2? I believe they were only asking for a few hundred for the carrier unit, which would be alot cheaper then having to buy it all new and get a full system, when the Whirlpool finally dies.