LS Aircon Servicing Singapore

Wall Mounted Aircon Installation

Wall Mounted Aircon Installation in Singapore: A Comprehensive Guide

Wall mounted aircon installation is a manageable DIY task if done with proper care and using the right knowledge. In the scorching heat of summer, a wall-mounted aircon can be a lifesaver, providing cool and comfortable indoor environments. However, the installation process can seem daunting for many homeowners. This comprehensive step-by-step guide aims to simplify the wall-mounted aircon installation process, ensuring a smooth and successful setup that enhances your living space’s comfort and functionality.

Wall Mounted Aircon Installation Tips

In the blazing summers of Singapore, wall mounted air conditioners are none less than blessings. Wall mounted aircon installation in Singapore is simple if you do it with the right technique. Aircon Servicing Singapore has laid out the following strategic method for installing wall mounted aircon Singapore. 

Step 1: Pre-Installation Preparation

Before diving into the installation process, gathering all the necessary tools and materials is crucial. This typically includes the aircon unit itself, a mounting bracket, appropriate screws and anchors, a drill, screwdriver, level, electrical wiring, insulated tubing, pipe cutter, and any additional accessories specified by the manufacturer. Verify that you have everything needed for a seamless installation.

Step 2: Selecting the Installation Location

Choosing the right location for your wall-mounted aircon is paramount to its performance and efficiency. Consider room size, sunlight exposure, furniture placement, and airflow patterns. Aim for a spot that provides even cooling distribution throughout the room without obstruction. Additionally, ensure adequate clearance around the unit for proper airflow and maintenance access.

Use a level to check the mounting surface’s evenness and stability. An uneven surface can lead to issues with the unit’s alignment and performance over time. Adjust or install additional support to create a level and sturdy base for mounting the aircon.

Wall Mounted Aircon

Step 3: Mounting the Bracket

Once you’ve identified the ideal installation location, it’s time to mount the bracket securely to the wall. Follow the manufacturer’s instructions regarding bracket placement, spacing, and orientation. Use the appropriate screws and anchors to ensure a strong and stable attachment to the wall. 

Verify the bracket’s level before proceeding to ensure the aircon unit will sit properly. The mounting bracket supports the weight of the aircon unit. Ensure it is securely fastened to prevent the unit from falling or becoming unstable during operation.

Step 4: Electrical Wiring and Power Supply

Safety is paramount when dealing with electrical wiring. Before proceeding, turn off the power supply to the installation area at the circuit breaker to prevent any accidents or electric shocks. Follow local building codes and regulations for electrical work.

Carefully route the electrical wiring from the power source to the designated terminals on the aircon unit. Make sure all connections are secure and properly insulated to prevent electrical hazards. Verify the wiring configuration and polarity to avoid potential issues during operation.

Step 5: Installing the Aircon Unit

With the bracket securely mounted and the electrical wiring in place, it’s time to install the aircon unit. Depending on the model, the unit may have hooks, slots, or brackets that align with the mounting bracket. Carefully lift and position the unit onto the bracket, ensuring a snug fit and proper alignment.

Follow the manufacturer’s instructions to secure the unit in place. This may involve using screws, bolts, or locking mechanisms provided with the unit. Check the unit’s stability and alignment multiple times to avoid any issues or misalignments that could affect its performance.

Step 6: Connecting Refrigerant Lines (if applicable)

Wall mounted aircon installation requires refrigerant lines, such as split-system models, it’s essential to connect the indoor and outdoor units using insulated tubing. Use a pipe cutter to cut the tubing to the appropriate length, ensuring precise measurements for a secure fit.

Attach the tubing to the designated ports on indoor and outdoor units, following the manufacturer’s proper sealing and insulation guidelines. This step is crucial for maintaining efficient refrigerant flow and optimal cooling performance. Verify all connections for tightness and integrity to prevent refrigerant leaks.

Step 7: Testing and Calibration

Once the installation is complete, it’s time to test the aircon unit and calibrate its settings for optimal performance. Turn on the power supply and activate the unit according to the manufacturer’s instructions. Test the cooling functionality, fan speeds, and airflow direction to ensure everything works correctly.

A thermometer measures the air temperature output from the unit and compares it to the desired setpoint. Adjust the thermostat settings as needed to achieve the desired cooling level. Monitor the unit for unusual noises, vibrations, or performance issues that require further adjustment or troubleshooting.

Wall Mounted Aircon Installation Singapore

Step 8: Final Adjustments and Inspections

After testing the aircon unit:

  1. Make any final adjustments to its positioning, airflow direction, and settings based on your comfort preferences.
  2. Inspect the installation for any loose connections, leaks, or potential hazards.
  3. Address any issues promptly to avoid future complications or damage to the system.

Ensure all electrical connections are secure and properly insulated to prevent electrical hazards. Check the refrigerant lines (if applicable) for any signs of leaks or damage. Clean the unit’s exterior and remove any debris or obstructions hindering its performance.


Wall mounted aircon installation requires careful planning, preparation, and execution to ensure optimal performance and longevity. Following this comprehensive step-by-step guide and consulting with professionals when needed, you can enjoy efficient cooling and comfort in your space throughout the years. Prioritize regular maintenance and care to maximize the lifespan and efficiency of your aircon system, providing a cool and comfortable indoor environment even during the hottest days of summer.

Frequently Asked Questions

Q1: How long does wall mounted AC last?

If you keep the wall mounted aircon in good health, it can last 10-15 years.

Q2: How do wall mounted air conditioners drain?

Your aircon’s indoor unit collects warm air and moisture, which is then condensed into water droplets. This water is drained through the condensate drain, which can be located either indoors or outdoors in a split AC system.

Q3: Do wall air conditioners need maintenance?

Regular maintenance is a must for all aircon, and if you neglect it, it will cost you heavy repairs and deplete the health of your aircon along with the unhealthy indoor environment.