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What Is Involved In Mini Split AC Unit Installation?

When considering the installation of a mini split AC unit, several critical steps and professional considerations come into play. At TES Heating & Cooling, your trusted HVAC company in Los Angeles, the process begins with a comprehensive assessment of your property’s specific needs, whether commercial or residential. Our expert technicians ensure that the mini split system is tailored to fit your space, providing efficient and effective heating and cooling throughout the year. This involves choosing an appropriate location for both indoor and outdoor units, meticulous drilling for necessary conduit passages, and precise electrical connections to integrate the system seamlessly. From start to finish, our top-notch custom installations prioritize your year-round comfort and satisfaction. For more information, you can visit us online at www.tes-hvac.com, email us at info@tes-hvac.com, or call us at 424-400-6692 to get started on an estimate. Have you been considering a mini split AC unit installation but are not sure what the entire process entails? Mini split air conditioning units have become a popular option for many households and commercial properties due to their efficiency and flexibility. However, understanding the installation process can help you make an informed decision and ensure that you get the most out of your investment.

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What Is Involved In Mini Split AC Unit Installation?

TES Heating & Cooling, your reliable HVAC Company based in Los Angeles, provides comprehensive installation services for mini split AC units, among other heating and cooling systems. Whether it’s for residential or commercial use, understanding what is involved in the installation process can help you prepare adequately. Here’s a detailed breakdown of what to expect.

Initial Consultation and Site Assessment

The first step involves an initial consultation where a professional from TES Heating & Cooling will visit your property. During this visit, the professional will discuss your needs and assess the installation site.

Assessing Your Needs

The technician will gauge the size of the area to be cooled, the number of units required, and the most energy-efficient model for your space. This ensures that the installed system will meet your comfort requirements.

Assessing the Installation Site

The placement of both the indoor and outdoor units will be carefully considered. Usually, mini split AC units have one outdoor compressor and one or more indoor air-handling units. The location for each component will be chosen based on factors such as ease of installation, noise level, and efficiency.

Choosing the Right System

TES Heating & Cooling offers various models and brands of mini split AC units. The system chosen will depend on several factors, including your budget, the size of the area, and your specific needs.

System Types

  • Single-Zone Systems: Suitable for cooling a single room or a small area.
  • Multi-Zone Systems: Capable of cooling multiple rooms, each with its own air-handling unit connected to a single outdoor unit.

Obtaining Necessary Permits

In some locations, obtaining permits is a necessary step before installation can proceed. TES Heating & Cooling will handle the required permits, ensuring that your installation is compliant with local and state regulations.

Installation Process

The actual installation process is multi-faceted, involving several critical steps to ensure efficiency and safety.

Indoor Unit Installation

The indoor unit should be strategically placed for maximum efficiency. This usually involves mounting the unit on a wall bracket or ceiling, and connecting it to the outdoor unit via refrigerant lines and electrical wiring.

Outdoor Unit Installation

The outdoor unit will be installed on a flat surface using a mounting stand. Proper placement is crucial for optimal performance and noise reduction.

Drilling and Mounting

Holes will need to be drilled through the wall to run refrigerant lines, electrical wiring, and a condensate drain line from the indoor unit to the outdoor unit.

Electrical Connections

Ensuring reliable electrical connections is a critical part of the installation. The system will be connected to the house’s main electrical panel, and precautions will be taken to make sure all connections are safe and secure.


  • Refrigerant Lines: These lines carry the refrigerant between the indoor and outdoor units.
  • Outdoor Wiring: Electrical wiring from the indoor unit to the outdoor unit is installed.
  • Condensate Drain Line: This line ensures that any moisture removed from the air inside is properly drained.

System Testing and Calibration

Once everything is connected, the system will be tested for leaks and proper operation.

Leak Testing

Technicians will use specialized equipment to check the refrigerant lines for leaks. Ensuring there are no leaks is critical for the efficient and safe operation of the unit.

System Calibration

Calibration involves setting the system to the desired settings and ensuring it runs efficiently. This step includes setting the thermostat, checking for proper airflow, and making any necessary adjustments.

Final Inspection and Cleanup

A final inspection ensures that everything has been installed correctly and that the system is operating optimally. Cleanup follows, leaving your property neat and orderly.

Post-Installation Support

TES Heating & Cooling offers ongoing support to ensure that your mini split AC unit continues to work efficiently. This includes regular maintenance, repair services, and answering any questions you may have about your system.

Maintenance Services

Routine maintenance checks are crucial for the longevity and efficiency of your AC unit. TES Heating & Cooling provides comprehensive maintenance services to keep your unit in peak condition.

Cost Considerations

Understanding the costs involved in installing a mini split AC unit is essential for budgeting.

Cost Components Description
Unit Cost The price of the mini split AC unit itself
Installation Fees Labor costs for professional installation
Additional Materials Mounting brackets, electrical wiring, etc.
Permit Fees Cost of obtaining necessary permits
Operational Costs Estimated electricity usage

Energy Efficiency and Savings

One of the significant advantages of mini split AC units is their energy efficiency. These systems are generally more efficient than traditional HVAC systems, leading to potential savings on your energy bills.

Energy-Efficient Components

  • Inverter Technology: Adjusts the speed of the compressor to near-exact cooling or heating requirements.
  • Zoning: Only cools or heats the areas that need it, reducing energy waste.

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Benefits of Mini Split AC Units

Several benefits make mini split AC units an excellent choice for many property owners.


Due to their compact size and flexibility, mini split AC units can be installed virtually anywhere in your home or office.

Quiet Operation

These units operate quietly, making them ideal for bedrooms, offices, and other areas where noise may be a concern.

Improved Air Quality

Many mini split systems come equipped with sophisticated filtration systems that purify the air, removing allergens and pollutants.

Easy Installation

Compared to traditional ducted systems, mini split AC units require less invasive installation, making them a suitable option for buildings without pre-existing ductwork.

Choosing the Right Installer

Choosing the right professional installer is crucial for ensuring your mini split system is installed correctly and operates efficiently. TES Heating & Cooling stands out due to its commitment to quality and customer satisfaction.

Why Choose TES Heating & Cooling

At TES Heating & Cooling, we prioritize delivering top-notch custom installations tailored to your specific needs. Based in Los Angeles, we have extensive experience providing heating and cooling solutions for a wide range of properties.

Customer-Centric Approach

Our approach focuses on understanding your requirements and delivering solutions that enhance your comfort throughout the year.

Comprehensive Services

From mini split AC units to heat pumps, furnaces, and more, our team is knowledgeable about a variety of HVAC systems and offers comprehensive installation and maintenance services.


Understanding what is involved in mini split AC unit installation helps you make an informed decision and prepares you for the installation process. With TES Heating & Cooling, you can expect professional, efficient, and customer-centric service, ensuring your new system delivers optimal performance and comfort.

Should you have any questions or wish to schedule an initial consultation, don’t hesitate to reach out to us at info@tes-hvac.com or call us at 424-400-6692. Visit our website www.tes-hvac.com for more information and to get started on an estimate. Your comfort is our priority, and we are here to provide solutions tailored to your unique needs.

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