Mini split systems—also known as ductless heating and cooling units—are growing in popularity for good reason. They’re energy-efficient, provide zoned climate control, and require no bulky ductwork. But once you decide to upgrade to a mini split system, the next big question is: How long does mini split installation take?

The answer can vary depending on a few key factors, including the number of indoor units, the complexity of your home layout, and the installer’s experience. In this blog, we’ll walk you through a realistic installation timeline, what to expect at each stage, and how a professional HVAC team like ours keeps the process smooth and efficient from start to finish.

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Why Homeowners Love Mini Split Systems

Before we get into timing, here’s a quick refresher on why mini splits are such a smart choice:

• No ducts required, which means less invasive installation

• Zoned temperature control for custom comfort in each room

• High energy efficiency compared to traditional HVAC systems

• Sleek, compact design that fits in any room

Whether you’re upgrading your whole house, adding a unit to a new room, or ditching the window AC units once and for all, a mini split offers flexible, reliable comfort.

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How Long Does Mini Split Installation Take?

Let’s break it down by stages so you know what to expect. On average, a standard single-zone mini split system can be installed in 4 to 8 hours, while a multi-zone system might take 1 to 3 days, depending on the number of indoor units and the complexity of the job.

Here’s a realistic timeline of the process:

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1. Pre-Installation Site Visit & Quote (1–2 hours)

Before the install day, a certified technician will visit your home to:

• Evaluate the layout of your space

• Recommend the right size and number of indoor units

• Determine the best outdoor condenser location

• Check electrical capacity and any upgrade needs

• Provide a quote and timeline

2. Equipment Delivery and Setup (1–2 hours)

On the day of installation (or sometimes the day before), your HVAC team will arrive with:

• Indoor air handler units

• Outdoor condenser

• Mounting brackets and refrigerant lines

• Electrical supplies and tools

We prep the work area to minimize disruption and protect your home during installation.

3. Installing the Indoor Unit(s) (1–2 hours per unit)

Indoor units are mounted high on walls or flush with ceilings, depending on the model. This stage involves:

• Securing a wall bracket and unit

• Drilling a 2-3” hole to connect refrigerant and electrical lines

• Feeding lines to the outdoor unit location

Timeline Example:

• Single-zone system: 1 indoor unit = ~1.5 hours

• Multi-zone system: 3–4 units = ~4–6 hours

4. Installing the Outdoor Condenser (1–2 hours)

The outdoor unit will be placed on a stable base, often a concrete pad or wall bracket. We ensure:

• Proper airflow and clearance

• Solid connection to refrigerant lines

• Weatherproofing and vibration isolation

Electrical Connection Note:
If your electrical panel needs upgrading or a new circuit, this can add 1–2 hours to the timeline, depending on accessibility and requirements.

5. Connecting and Sealing the Line Sets (1–2 hours)

This is where everything gets connected behind the scenes:

• Refrigerant and drain lines are run between units

• Electrical wiring is completed

• All openings are sealed for weatherproofing and insulation

In multi-zone setups, lines must be carefully measured and branched to serve each unit individually.

6. System Charging and Testing (1–2 hours)

Once installed, your technician will:

• Vacuum the line set to remove air and moisture

• Charge the system with refrigerant if needed

• Test for leaks and run system diagnostics

• Power up the system and ensure each zone functions properly

We’ll also walk you through using the remote control or smart thermostat and explain maintenance best practices.

Total Installation Time Overview:

 

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What Can Add Time to Your Installation?

Every home is different, and certain factors may extend installation time:

• Installing in older homes with limited access

• Upgrading the electrical panel

• Long line set runs (e.g., from basement to attic)

• Working in extreme weather or tight crawlspaces

• Integrating with a smart home system or additional air purifiers

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How Our Team Makes Installation Efficient

When you search “mini split installation near me”, it’s not just about finding someone who can do the job—it’s about finding someone who will do it right and on time. Here’s how we ensure a smooth process:

• Detailed pre-install planning to avoid surprises

• Highly trained and licensed technicians

• Clean and respectful work practices (we treat your home like it’s ours)

• Clear communication every step of the way

• Fast turnaround without compromising quality

We’ll give you a realistic timeline upfront, show up when we say we will, and stay until everything works exactly as it should.

Plan Ahead for a Smooth Installation

Mini split systems are one of the smartest investments you can make in your home’s comfort and energy savings. And while the installation is relatively quick compared to traditional HVAC systems, planning ahead and working with an experienced installer makes all the difference.

If you’re ready to move forward, start by scheduling a consultation. We’ll walk you through every option and give you an honest, accurate timeline based on your unique space.

Still wondering how long mini split installation takes? Give us a call or schedule your free in-home consultation today. We’ll help you get the comfort you want—without the wait.