Mini-Split Cost Estimator

What Is a Mini-Split Cost Estimator?

A mini-split cost estimator is a tool that provides a budget-level estimate for installing a ductless mini-split system. The total cost is primarily influenced by the number of indoor units (zones), the system's total cooling/heating capacity (BTUs), and its energy efficiency rating (SEER2). This free calculator helps you understand the potential costs for this highly efficient heating and cooling solution.

Last updated: November 8, 2025

How to Use This Estimator

Get a quick budget estimate for your mini-split project in three easy steps:

1. Enter Number of Zones: Input the number of indoor units (or "heads") you plan to install.
2. Input Total Capacity: Enter the total BTU capacity required for the outdoor unit. This should cover the needs of all zones combined.
3. Enter SEER2 Rating: Input the efficiency rating of the system you are considering.
4. Click "Estimate Cost": Get an instant budget range for a professional installation.

Key Cost Factors Explained

The total price for a new mini-split system depends on several key variables. Our calculator uses these factors to provide its estimate.

• Number of Zones: Each additional indoor unit adds significant cost for the unit itself, the line set, and the labor to install it.
• Total Capacity (BTU): A more powerful outdoor unit that can support more zones or larger spaces will be more expensive.
• SEER2 Rating: Higher efficiency systems (e.g., 25+ SEER2) cost more upfront but provide long-term savings on your electricity bill.
• Labor: Professional installation is crucial for a mini-split and can account for 40-60% of the total project cost.

Ductless mini-split heat pumps can reduce your energy costs for heating by up to 50% compared to electric furnaces and baseboard heaters, according to the U.S. Department of Energy.

Example Mini-Split Cost Calculation

This is a common scenario for adding heating and cooling to two bedrooms and a living room.

Frequently Asked Questions