My dealer quoted me TUH2B080A9V4VA on proposal. Then today after installation I discovered that the unit is TUH2B080A9V3VA. I called him up and he said b/c my AC unit is a 3 ton unite, so the distributor thought it makes sense to match it with a 3-ton drive for furnace, hence the swap.

I am surprised by this news which wasn't communicated to me before. So I start to think that he may not have told the truth.

What's the real difference between those 2 models? Also, would there be a price differential between a 3 ton vs. a 4 ton driver furnace?

Thanks much!