LS Aircon Servicing Singapore

Install a Split System Aircon

A Comprehensive Guide to Installing a Split System Aircon in Singapore

It appears daunting to install a split system aircon at first glance, but with a systematic approach and clear guidance, it becomes a manageable task. These systems are renowned for their efficiency and versatility, making them popular choices for cooling residential and commercial spaces. 

You need some strategic steps for the successful installation of the split system aircon. Therefore, in this extensive guide, we’ll take you through eight straightforward steps to ensure a successful installation process. This article will cover everything from choosing the right location to testing and commissioning the system.

Split Aircon Installation Singapore

It’s a manageable DIY task to install a split type aircon at your home. However, split aircon installation services often insist on thoughtful planning and careful execution of the process to achieve eventual success. If you have planned to install a split system aircon, follow the below mentioned guidelines extracted from the professional insight of LS Aircon Servicing Singapore

Choose the Right Location

Selecting the optimal location for your split system air conditioner sets the foundation for its performance and efficiency. Consider factors such as room size, layout, and airflow patterns. Position the indoor unit on an exterior wall with sufficient clearance for airflow and easy access to the outdoor unit. 

Avoid placing it near heat sources or obstructions that may affect performance. Additionally, ensure the chosen location allows for proper drainage and minimizes vibration to enhance the system’s longevity.

Mount the Indoor Unit

Once you’ve determined the ideal location, it’s time to mount the indoor unit securely. Follow the manufacturer’s instructions carefully, ensuring it is level and properly aligned. Use a stud finder to locate and anchor the unit to wall studs for stability, especially if it’s a heavier model. 

Adequate mounting ensures efficient air distribution throughout the room. Consider the unit’s height to optimize airflow and comfort while avoiding any potential obstacles.

Install the Outdoor Unit

If you want to install a split system aircon successfully, positioning the outdoor unit correctly is crucial for its functionality and longevity. Choose a well-ventilated area outside the building, away from direct sunlight and debris. 

Place it on a stable surface, such as a concrete pad, to reduce vibration and ensure proper drainage. Maintain ample clearance around the unit for airflow and ease of maintenance. Furthermore, consider noise levels and local regulations when selecting the outdoor location to minimize disturbances.

Installing a Split System Aircon in Singapore

Drill Holes for Piping

To connect the indoor and outdoor units, drill holes through the wall for the refrigerant lines, electrical wiring, and drainage pipes. Ensure precise measurements and alignment to facilitate a snug fit. 

Use appropriate tools, such as a hole saw or drill bit, suitable for the piping size. Stick to local building codes and regulations regarding hole placement and size. Seal any gaps around the holes to prevent air leaks and maintain insulation efficiency.

Connect the Refrigerant Lines

Connecting the refrigerant lines is a critical step in ensuring the proper functioning of your split system aircon. Follow the manufacturer’s instructions carefully, using insulated tubing to maintain optimal refrigerant flow and prevent energy loss. 

Depending on the model, you may need to flare or solder the connections securely. Tighten all connections to avoid leaks and ensure airtight seals. Conduct a thorough inspection to verify the integrity of the connections before proceeding.

Complete the Electrical Wiring

Proper electrical wiring is essential for the safe and efficient operation of your split system aircon. Connect the power cables according to the unit’s wiring diagram and local building codes. Insulate all electrical connections properly to prevent shorts or hazards. 

If you’re unsure about electrical work, it’s advisable to seek assistance from a qualified electrician. Verify all connections to ensure they are secure and correctly configured before proceeding to the next step.

Split System Aircon Installation

Test for Leaks and Insulate

Before powering up the system, conduct a comprehensive leak test to ensure the integrity of the refrigerant lines. Pressurize the lines and use a leak detection solution to identify any leaks around the connections. Quickly resolve any leaks to prevent refrigerant loss and maintain system efficiency. 

Moreover, insulate the refrigerant lines to prevent temperature fluctuations and condensation buildup because these buildups can impact performance and energy efficiency. Proper insulation helps maintain consistent cooling while minimizing energy consumption.

Test and Commission the System

Once the installation is complete, it’s time to test and commission the split system aircon. Power up the system and verify its operation, checking for proper airflow, temperature control, and overall performance. 

Make any necessary adjustments or fine-tuning to optimize the system’s efficiency and comfort levels. Provide clear user instructions to occupants, outlining proper operation and maintenance procedures. Additionally, consider scheduling regular maintenance checks to ensure the system continues to operate at peak performance.


It may require some time, effort, and attention to detail to install a split system aircon, but with the right approach, it can be a manageable process. By following these eight easy steps and considering additional tips and considerations, you can ensure a successful installation and enjoy efficient cooling in your space. 

Remember to prioritize safety, follow manufacturer guidelines, and seek professional assistance if needed. With proper installation and maintenance, your split system aircon will provide reliable comfort for years.