Ok, I'm buying a home that hasn't been lived in for 3 years.

It has a 2.5 ton Carrier R-22 unit that is about 10 years old. The condenser coil has a large gash in it.

One A/C company suggested replacing the entire outside condensing unit with a 2.5 ton Goodman model while leaving the Carrier air handling unit inside the house intact.

I didn't ask, but they did not mention changing the evaporator coils to R-410A, so I assume is will not be replaced and it will still be a R-22 unit.

Any opinion on mix and matching brands? This contractor said this is my least costly option.