Adding a central air conditioning unit to your current ductwork usually ranges from $4,000 to $8,000. Unit and ductwork. Installing new ductwork along with the unit ranges from $9,000 to $12,000.

For many homeowners in Texas, a ductless mini-split system can be the perfect cooling solution. These units are highly versatile and can provide efficient cooling for a variety of spaces, making them an ideal choice for the hot and humid climate of the Lone Star State.

For a 2,000-square-foot space, you'll need an AC unit of around 3 tons. Every 12,000 BTUs is exactly 1 ton.

Here's how long some of the most common types of AC last: Window Unit AC — 10 years. Portable AC — 5-10 years. Residential single whole-home AC unit — 15 years. Central air-source heat pumps — 15 years (and up to 20–25 years if well-maintained and in a well insulated home)