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Table of Contents

Essential Factors to Consider

The Installation Process

Professional Assistance and Maintenance

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Expert Guide on How to Install a Mini Split Air Conditioner

4 min readUpdated May. 06, 2024Terry MehilosHVAC
Expert Guide on How to Install a Mini Split Air Conditioner image

When summer hits, the comfort of your home depends on a well-functioning cooling system. If you're pondering over a more efficient and versatile cooling option, you might want to consider how to install a mini split air conditioner. These compact, ductless systems, renowned for their efficiency and quiet operation, are becoming increasingly popular among homeowners. Here's an in-depth guide on how to install a split AC unit, whether you're a DIY enthusiast or considering professional help.


  • Mini split air conditioners offer significant advantages over central AC systems such as energy efficiency, customizable settings and quiet operation.
  • Learn about the installation process involve for a mini split AC system to decide whether you can complete the project on your own.
  • Sears Home Services repair, replacement and installation services on all types of mini split air conditioner systems.

Essential Factors to Consider

Prior to embarking on the task of how to install a mini split air conditioner, it's essential to understand several key aspects.

The Advantages of a Mini Split Air Conditioner

Besides their ease of installation, mini split ACs are known for their:

  • Energy efficiency.
  • Customizable settings.
  • Quiet operation.

These benefits make them a superior choice compared to traditional central air conditioning units in some homes.

Selecting the Right Size and Capacity

If you're wondering how to install a mini split air conditioner effectively, start by choosing a unit that matches your space requirements. Consider factors like room size, insulation, and heat load. Schedule a free in-home consultation with Sears Home Services HVAC expert to make the right choice on the size of mini split system that you need for your home.

Installation Requirements

When you're preparing to install a split AC unit, consider aspects like the positioning of the indoor and outdoor units, electrical needs, mounting options, and correct refrigerant line sizing. For safety and efficiency, talk with a Sears Home Services HVAC consultant experienced in mini split installations.
With these factors in mind, you can make a well-informed decision about how do you install a ductless air conditioner. Remember, Sears Home Services provides professional installation services to assist you in maximizing your mini split AC system's potential.

The Installation Process

For those wondering how to install a mini split air conditioner themselves, here's a step-by-step guide:

  1. Preparation: Gather necessary tools such as a drill, screwdriver, level, measuring tape, wrenches, and electrical testing equipment. Choose an ideal spot for your indoor unit ensuring proper airflow and proximity to an electrical outlet. Note: You may need to have an electrician run a dedicated circuit to the system depending on the requirements shown in the installation guide. Make sure the area for the inside unit is free from obstructions and the wall or mounting surface is sturdy enough to support the device.
  2. Installing the indoor unit: Follow the manufacturer's instructions to mount the indoor unit securely. Use a level to ensure it's straight. Drill a hole to pass the refrigerant lines through and connect them to the indoor unit. Make sure the lines are properly insulated and free from kinks or bends. Warning: Have a contractor drill holes through walls in your home to avoid hitting electrical wiring and pipes inside the wall.
  3. Mounting the outdoor unit: Choose a well-ventilated location for the outdoor unit, away from direct sunlight or heat sources. Secure the unit using appropriate brackets. Connect the refrigerant lines and electrical components, adhering to the manufacturer's guidelines. It's critical to consult a qualified electrician to ensure proper electrical connections and compliance with local codes.

If you run into any issues during the process of installing a ductless air conditioner, professional help is recommended for safe and efficient installation. Based on the complexity of installing most HVAC systems, consider having a contractor complete the entire installation.

Image of a professional service provider working on a mini split AC

Professional Assistance and Maintenance

While some homeowners may feel comfortable with a simple installation, more complex systems often call for professional expertise. At Sears Home Services, we understand the importance of proper installation for the optimal performance and longevity of your mini split air conditioner.

If you're unsure about any aspect of how to install a split AC unit, lack the required tools, or have concerns about electrical wiring or refrigerant lines, our experienced HVAC experts are here to help. Schedule a free consultation to begin your project today. We also offer comprehensive maintenance packages to keep your system running smoothly, minimizing the risk of breakdowns and extending its lifespan.

Beyond installation and maintenance, Sears Home Services offers a wide range of additional services, including troubleshooting, repairs, replacement parts, and upgrades. We're committed to providing exceptional service and support throughout your HVAC journey.

Get a new HVAC system now!

Keep your home comfortable all year. Request an appointment with our HVAC installation and replacement experts.

Call (800) 413-3629 or schedule online now.

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