A ductless mini split typically costs $3,500 to $7,000 per zone installed in 2026 for a single-zone system, and about $10,000 to $25,000 for a multi-zone system serving 3 to 5 rooms. The per-zone cost drops a little as you add zones on one outdoor unit, but each extra indoor head, line set and installation adds up.
Last updated: October 2026. Typical U.S. ranges; prices vary by brand, home and region.
Mini split cost by number of zones
| Zones | Typical outdoor unit size | Typical installed cost |
|---|---|---|
| 1 zone | 9,000 to 24,000 BTU | $3,500 to $7,000 |
| 2 zones | 18,000 to 24,000 BTU | $6,500 to $12,000 |
| 3 zones | 24,000 to 36,000 BTU | $9,000 to $16,000 |
| 4 zones | 36,000 to 42,000 BTU | $12,000 to $21,000 |
| 5 zones | 42,000 to 48,000 BTU | $14,000 to $25,000 |
Larger homes sometimes use two outdoor units instead of one big multi-zone unit, which can improve performance and redundancy.
What drives the price
- Indoor unit type: standard wall heads are the most affordable. Ceiling cassettes, floor consoles and concealed slim-duct units cost more.
- Efficiency and cold-climate capability: high-SEER2 and low-temperature heating models cost more. See do heat pumps work in cold climates.
- Line set length and routing: longer runs, interior routing and line hide covers add labor.
- Electrical work: a new dedicated circuit and disconnect, or a panel upgrade.
- Brand tier: premium brands cost more; installer experience with the brand matters.
- Wall construction: brick, stone and multi-story installs take longer.
Extra costs
| Item | Typical cost |
|---|---|
| New circuit and disconnect | $300 to $1,500 |
| Panel upgrade | $1,500 to $4,000 |
| Line set covers (exterior) | $100 to $400 per zone |
| Condensate pump (where gravity drain isn’t possible) | $150 to $400 per head |
| Wall or roof stand for the outdoor unit | $150 to $600 |
| Permits | $50 to $500 |
DIY mini splits
Pre-charged “DIY” mini split kits sell for roughly $1,500 to $3,000 per zone. They can work for handy homeowners, but electrical work may require a licensed electrician, local codes may require permits, and some manufacturer warranties require professional installation. Standard mini splits require an EPA-certified technician to handle refrigerant.
Is a mini split worth it?
Mini splits shine in homes without ducts, additions, garages, bonus rooms and problem rooms that central air doesn’t reach. For whole-house cooling in a home with good ducts, central air is usually cheaper. See ductless mini split vs. central air and heat pump installation cost.
Rebates
The federal 25C tax credit ended for installations after December 31, 2025. Check your electric utility and state energy programs for mini split and heat pump rebates.
Frequently asked questions
How much does a one-zone mini split cost installed?
Typically $3,500 to $7,000, depending on size, efficiency and installation complexity.
How many zones do I need?
Usually one zone per room or open area you want to condition independently.
Do mini splits increase electricity bills?
They add electrical use, but they’re very efficient and often cost less to run than window units, space heaters or older central systems.
Disclaimer: prices are estimates for general information and are not quotes.