Ball park cost to install a new HVAC system (Heater, AC, Ducts)

[Daniel Shchyokin]

House is a 2000 square foot house in gastonia its a HUD property and the power is off. HUD lists HVAC (heater, AC and ducts as damaged) I am trying to come up with a worst case estimate of how much those three things would cost to replace (I can get prices for the materials) but not show how many feet of duct would be needed to replace, and how much the labor would cost