2014 Toyota Tundra 4WD Truck - Evap hose issues

Our 2014 Toyota Tundra Crewmax does not blow cold air. I have been told that the evaporator hose has a leak and it will cost a lot of money to have it fixed. I don’t want to have to pay that money if it is something that is due to a faulty part

Even if the part was ( faulty ) you are out of the warranty . So Yes you will have to pay for the repair because proving the part was faulty is next to impossible.
Mechanical things do break .

Then you won’t get your AC fixed.

A failed part IS a faulty part. It wasn’t when it was installed. It worked for 6 years but now it is broken. Stuff breaks. Sometimes it breaks sooner than we think it should, but the repair is still on you since the truck is far out of warranty.

Do you know where the leak is? Was it just old age, or was something rubbing on the hose, causing the leak? I’d want that fixed.

Evaporator core; 9 hours of labor to replace.

Do you REALLY think that the manufacturer or importer is responsible for replacement of a part on a vehicle that is at least 6 years old, and whose warranty expired several years ago?