https://www.fixr.com/costs/1-5-ton-air-conditioner
The national average cost to install a 1.5-ton air conditioner is $3,500 to $6,000, with most homeowners spending $4,500 for a 1.5-ton split system with 16 SEER ...

https://peakheatingcooling.com/cost-of-an-air-conditioner-in-replacing-your-ac-unit/
In a residential setting specifically, the average cost for a new AC unit installation is about $8,500. ... AC unit Cost by Brand.

https://www.angi.com/articles/window-ac-unit-cost.htm
Installation and Labor. Installing a window AC unit costs about $60 to $300. The window AC specialists will inspect the window, safely install ...