How much does it cost to replace a ductless mini split system?

Replacing a ductless mini-split has no one-size price; Air Comfort Service, Inc. gives a firm quote after an in-home evaluation. The biggest swing comes from system size and how many zones you need. Efficiency level, install complexity, and any permit fees also matter. When multiple major components fail or comfort suffers across zones, replacement is usually smarter; a single head or control fault often favors repair. A quick load check avoids oversizing and extra cost. We serve the St. Louis area, including Defiance, with transparent, no-hidden-fee quotes.

Key factors that set the final price:

• Number of indoor heads and total capacity
• Line-set length and wall/ceiling penetration needs
• Electrical upgrades and condensate drainage setup
• Brand, inverter tech, and cold-climate features
• Permit and inspection fees in your municipality

Schedule an in-home assessment to confirm sizing and receive a written quote you can compare.

Updated: 2026-02-13

Need help in Defiance, MO? Call 3148148455 or book online.