The cost of a new air conditioning unit in Texas can vary greatly depending on criteria such as unit size, efficiency, brand, and installation complications. Basic units can start around $2,500 to $4,000, while more complex and larger systems can cost $5,000 to $10,000 or more. Regional variances, contractor rates, and unique features all have an impact on the price. To get an accurate quotation, acquire quotes from local HVAC contractors who understand your specific needs and region.