Iwas told Payne air conditioning was made by carrier is that true. The cost of a 3 ton ground unit by payne. Estimate please

This is a question you need to ask the local HVAC companies,, as the material and labor cost are different in different cities, states,

Payne is one of carriers brands.. it is their lowest priced brand and mostly installed by new builders and small time local contractors.

As far as estimates that is a local thing. In my neck of the woods it might be a whole lot higher than say Idaho or Montana.

I have a Payne condenser model PA 13 NRO 48-J... can you tell me the ton size rating?