Cost to Install Mini Split AC System

If you’re wondering how to install a mini split AC and how much it might cost you, you’re not alone. With energy efficiency, zone control, and ductless design, mini splits have become one of the most popular HVAC solutions for homeowners in 2025. 

But before you decide whether to go the DIY route or hire a pro, it’s important to understand the cost for mini split installation and the factors that influence it. 

How to Install Mini Split AC: A Quick Guide

Installing a mini split AC system involves placing the indoor air handler, mounting the outdoor condenser, and connecting them with refrigerant lines, a drain line, and electrical wiring. 

While some systems are DIY friendly, many homeowners choose to hire a professional. Understanding both the installation process and price breakdown can help you pick the best option for your home. 

The mini split installation price varies depending on the size, brand, and number of zones. For a typical home, the mini split cost ranges from $1,500 to $5,000, with labor accounting for a large portion of the mini split installation cost. 

The ductless AC unit cost might seem high upfront, but lower energy bills over time make it worthwhile. 

DIY vs Professional Installation

Sessional Installation: Price Differences

Thinking about how to install a mini split yourself? Here’s a quick look at the price differences.

DIY Installation:

• Estimated Cost: $1,000-$2,000
• Includes: DIY-Ready unit mounting hardware, tools, basic electrical materials 
• Notes: You may still need to hire an electrician depending on your setup

Professional Installation:

• Estimated Cost: $3,000-$5,000+

• Includes: labor, system setup, electrical work, warranty support

Conclusion:

Mini split installation cost varies, but DIY is more affordable upfront, while a pro installation offers peace of mind, permits, and warranty support. Compared to central air, Mini splits are usually more affordable and flexible--especially in homes without existing ductwork! 

Frequently Asked Questions 

How much does a mini-split cost to install?

Mini splits cost anywhere from $1,500 to $5,000 to install. 

How many mini splits do I need for a 1500 square foot house?

You’ll likely need 2 to 4 mini split units. 

What is the disadvantage of mini-split?

The biggest drawback is upfront costs. Yes, particularly if new wiring is required during the installation.

Do you need a mini-split in every room?

No, you only need units in the rooms you want to heat or cool. 

Is it cheaper to install a mini-split or central air?

Mini splits are often cheaper in the long-term, but central air can be less expensive upfront. 

How many square feet can a mini-split cool?

A single-zone unit typically can cool 300-600 square feet. 

How many hours does it take to install a mini-split?

A pro installation can take anywhere from 4 to 8 hours to complete.