Last Update: 18 September 2025
Wondering how long air conditioning installation takes? The answer depends on the type of system, your property size, and the complexity of the job. It's also important to consider factors like custom features, multiple zones, property layout, weather, and even peak seasonal demand which can also influence the timeline. With the right team, installation can be smooth, efficient, and tailored to your needs, ensuring your system delivers reliable comfort for years to come.
If you’re planning to install a new air conditioner, it’s natural to wonder how long the process will take. No one wants the hassle of ongoing disruption, especially during the peak of summer when comfort matters most. In truth, often the time of an installation will vary depending on the type of system, size of property and complexity of the job, however with the right team the installation doesn’t have to be stressful or drawn out. Here’s the main factors that affect installation time and how long each type of system usually takes.
What Factors Can Affect Air Conditioning Installation Time?
The time it takes to install an air conditioner varies depending on several factors however here’s a general guide:
Type of System
Different types or air conditioning systems require different processes to ensure reliable and efficient performance. Here is a general guide to each type of system and their installation time:
Ducted Air Conditioning
Installation of a ducted system usually takes 1 to 3 days, depending on the size of the property and number of zones. This covers fitting the central unit, running the ductwork through the ceilings, fitting vents in each room and completing electrical connections. Sometimes pre-structural limitations like ceiling access can delay the process so it’s ideal to get a consultation prior to installation.
For more information on ducted air conditioning installation, click here.
Split-System Air Conditioning
Typically, a single-room split system can be installed in 3 to 6 hours. The process includes mounting the indoor unit on a suitable wall, positioning the outdoor compressor, connecting refrigerant lines, and completing electrical connections. Additional time may be required if multiple units are installed.
For more information on split-system air conditioning installation, click here.
Portable Air Conditioning
These units are the fastest kind of systems to set up and can usually be ready to use within 30 minutes to 1 hour, as they do not require permanent installation or ductwork.
Cassette Air Conditioning
Cassette units are designed for open-plan areas and larger commercial spaces. Installation generally takes half a day to complete, depending on the ceiling access and complexity of the space. The installation process requires putting the unit into the ceiling, connecting refrigerant lines and wiring the electrical systems.
It's important to note that these are general timeframes and the exact duration can vary depending on the property layout, accessibility and additional requirements.
Professional installers like Coastal Air Heating & Cooling ensure your system is installed efficiently and correctly for long-term performance.
The Size Of Your Residential or Commercial Property and Layout
The size, layout, accessibility and zoning of your home or business can affect how long an installation will take. Larger properties naturally require more time to install multiple systems or additional features. Often commercial properties require extra planning to ensure consistent airflow efficiency, whereas with residential properties more focus is required on structural factors like ceilings, electrical connections, walls and windows.
Contact Coastal Air Heating & Cooling for residential air conditioning installation or commercial air conditioning installation services tailored to your property.
The Customisation or Additional Features To Your Aircon
Today’s modern air conditioning systems often include features such as smart technology, Wi-Fi or home automation. Although these features improve convenience and efficiency, they can extend the installation time to make sure the installer has completed proper integration and setup for the user. Talking to your technician prior to installation about the different customisation features you want, will allow them to prepare to accommodate these needs in a timely manner.
The Number of Units or Zones
The number of air conditioning units or zones in your property can have an impact on installation time. Single room split-systems are relatively quick to install but if you are looking to install multiple across different rooms, it can take longer to ensure all refrigerant and electrical lines are working. This is similar to ducted systems that have multiple zones as it takes longer to organise independent temperature control and airflow.
Unexpected Factors That Can Influence The Time of an Installation
Even with careful planning, there are some factors that can be out of your control that can influence how long an air conditioning installation takes.
Weather
Weather can influence the air conditioning installation for both indoor and outdoor systems. Heavy rain can impact work for systems that require outdoor compressors or roof and ceiling access. Whereas things like wind or extreme weather can impact the set up of electrical wiring or refrigerant lines.
Seasonal Demand
The time of year can also affect the time of the installation process. During the peak of summer, demand for air conditioning installation and services increase drastically. This seasonal demand can extend installation timelines, particularly for ducted or multiple unit systems. Planning ahead to book installers ahead of time, will allow you to avoid seasonal delays and ensure you stay cool.
The Installer Experience and Preparation
The skill and experience of your installation team can influence how long the process takes. Experienced installers like Coastal Air Heating and Cooling can complete the job more efficiently while maintaining high standards of workmanship.
Whether you’re upgrading to a ducted system or fitting a split system for a single room, our expert installers ensure the process is smooth, efficient, and tailored to your needs.
Book Your Installation with Coastal Air Heating & Cooling
Call us today on 0480 020 823 or fill out our online enquiry form to get started. We’ll provide an upfront quote, talk you through your options, and make sure your new air conditioner is installed smoothly and efficiently.
Published by: Joshua Walker