3-zone mini-split: the short answer
As configured, budget roughly $6,600 – $12,000 for a
3-zone mini-split, rising toward $9,100 – $19,500
once new ductwork and electrical work are included. Three zones push a ductless system toward the upper part of the mini-split range. The outdoor condenser must be sized for the combined load, and every head adds equipment and labor — though you still avoid ductwork cost entirely. The biggest swing is
still your own site, so itemize your estimate above.
Before you book an installer
These figures are indicative ranges, not quotes, and not HVAC, electrical,
or tax advice. Get several written, itemized estimates from licensed HVAC contractors, and
confirm any permit or inspection requirement locally. A different equipment tier, ductwork,
or electrical work can move the total well beyond these ranges. Any 25C tax credit is shown
separately — verify eligibility at energy.gov / IRS.
National indicative ranges for this configuration, as of 2026-06.