Question: how much should a ductless air conditioner cost?
Answer: Ductless Air Conditioner Installation Costs A ductless mini-split air conditioning system costs$2,000 to $14,500 with an average of $3,000 for a 12,000 BTU system. A one-ton unit with one outdoor and one indoor component at 21 SEER rating runs $1,000 to $4,000 depending on the brand and type of indoor mount.