As the Aussie summer looms, many homeowners begin to consider the cooling comforts of air conditioning. If you’ve decided to take the plunge and install an air conditioner in your home, knowing what to expect during the installation process can help ensure everything runs smoothly. This comprehensive guide will walk you through each step of an AC installation, from choosing the right unit to the final check-up.
Step 1: Choosing the Right AC Unit
Before any actual installation begins, the first step is selecting the right air conditioning unit for your home. This decision should be based on several factors including the size of your space, your climate, energy efficiency ratings, and your personal cooling needs. It’s advisable to consult with a professional who can provide recommendations based on your specific circumstances. This ensures that your AC unit will be sufficiently powerful to cool your space without wasting energy.
Step 2: Initial Consultation with a Professional
Once you’ve chosen a suitable air conditioner, the next step involves a visit from your installation professional. This consultation typically includes:

- Assessing Installation Areas: The technician will check the proposed locations for both the indoor and outdoor units to ensure they are suitable. For example, they’ll look for a stable, unobstructed location for the outdoor unit and an optimal spot for the indoor unit that allows for efficient air distribution.
- Evaluating Ductwork (if applicable): In cases of ducted systems, the installer will inspect existing ductwork for suitability or advise on the installation of new ductwork.
- Discussing Electrical Requirements: Air conditioners have specific electrical requirements, and the installer will check your existing electrical system to ensure it can handle the new AC unit.
Step 3: Preparing the Site
Before the actual installation day, you might need to prepare the installation site. This could involve clearing out any debris or obstructions around the installation areas, ensuring that there’s easy access to your home for carrying large equipment, and possibly covering furniture or valuables to protect them from dust and debris.
Step 4: Installation Day
On the day of installation, the process will generally follow these steps:

- Installation of the Outdoor Unit: The outdoor compressor/condenser unit will typically be installed on a concrete pad or brackets against the house. The location should be away from direct sunlight and any areas that might block airflow.
- Mounting the Indoor Unit: For split systems, the indoor unit will usually be mounted high on a wall. This involves drilling holes through the wall for mounting brackets and the passage of electrical and refrigerant lines.
- Connecting Refrigerant Lines: These lines connect the indoor and outdoor units. The technician will ensure they are properly insulated and secured.
- Electrical Work: Wiring the units to your home’s electrical system is crucial and must be done in compliance with Australian Standards. This will likely involve extending your current electrical circuit to accommodate the new unit.
Step 5: Testing the System
Once everything is installed, your technician will test the system to ensure it’s working correctly. This includes checking that the unit starts up properly, operates smoothly, and produces cool air. They will also check for leaks in the refrigerant lines and ensure all electrical connections are secure.
Step 6: Final Walk-Through and Education
After testing the system, the installer should take you through a final walk-through to explain:

- How to operate the AC unit: Including how to change its settings and when to use different modes.
- Basic maintenance tips: Such as how to clean the filters and how often to schedule professional maintenance.
- Warranty and service information: Ensuring you know how to get help if your unit experiences issues down the track.
Step 7: Clean Up
A professional installation team will clean up the installation site, removing any debris and cleaning the areas where they worked. They should leave your home as clean as it was before they arrived.
Step 8: Post-Installation Support
Good air conditioning companies will offer support after the installation. This might include a follow-up visit or a phone call to ensure the AC unit is operating as expected and you are satisfied with the work.
What to Keep in Mind
- Choose Licensed Professionals: Always choose licensed and insured professionals for the installation to ensure safety and compliance with all regulations.
- Be Prepared for Disruption: While installers will try to minimize disruption, expect some noise and disturbance on installation day.
- Understand the Costs: Make sure you understand all costs involved before work begins. This includes potential extra charges for electrical upgrades or additional ductwork.
Related Questions
The thumb rule for AC installation primarily emphasizes ensuring proper sizing and positioning of the air conditioning unit for optimal efficiency and performance. The size of the AC should correspond to the square footage of the space to be cooled, typically calculated as 20 BTU per square foot. Additionally, the unit should be installed in a location where air can circulate freely, away from direct sunlight and heat sources to prevent overworking the system. It's also crucial to ensure that the thermostat is placed away from heat sources for accurate temperature control. Installation should be handled by professionals to adhere to local codes and manufacturer guidelines, ensuring the system operates safely and efficiently.
The recommended height for mounting an AC unit off the ground typically depends on the type of unit and the environment in which it is installed. For central air conditioning systems, the outdoor compressor should be placed on a concrete slab that is level and raised at least a few inches above ground level to avoid contact with water and debris. For window air conditioners, it's advisable to install them at least 3 to 4 feet off the ground to ensure efficient operation and to minimize noise and vibrations inside the room. This placement also helps in maintaining the unit by preventing blockage of the condenser coils.
The 20 degree rule for air conditioners refers to the recommended setting for the temperature differential between the outside and inside of a building to achieve energy efficiency while maintaining comfort. The rule suggests that setting your air conditioner's thermostat 20 degrees below the outdoor temperature can optimize cooling performance without overloading the system. For example, if it's 95 degrees outside, setting your air conditioner to 75 degrees should maintain comfort without excessive energy consumption. This rule helps in balancing comfort with energy efficiency, reducing wear and tear on the air conditioning unit, and lowering electricity bills.
Conclusion
Installing an air conditioner is a significant home improvement that can add comfort and value to your property. By understanding each step of the process and preparing accordingly, you can help ensure that your AC installation goes off without a hitch. Remember, the key to a successful installation lies in careful planning, choosing the right professionals, and knowing what to expect each step of the way. With your new system in place, you can look forward to a cooler, more comfortable home, just in time for the summer heat. Contact Pacific Air and Electrical for your installation and air conditioning servicing.