How Long Does Air Conditioning Installation Take?

If you’re planning a new AC installation, one of the first things you’ll want to know is how long it takes to get your system up and running. The answer depends on the type of system and whether you’re installing air conditioning in a single room or setting up a large commercial HVAC system.

For most homes, you can install an air con in as little as 4 to 8 hours for a standard split unit, while multi-split or ducted systems can take several days. On the other hand, commercial projects are often larger and more complex, meaning installation can take anywhere from a single day to a full week or more.

In this guide, we’ll break down the typical timeframes for installing air conditioning, from quick window units to full whole-house and commercial HVAC systems.

How Long Does it Take to Install Air Conditioning?

When thinking about installing air conditioning, one of the first questions is how long the process will take. A typical air conditioner installation can take anywhere from four to eight hours to complete. In some instances, this can take longer depending on the scope of the project.

However, a full HVAC installation will definitely take longer. A simple residential system may take 1 to 5 days, while a larger commercial or industrial installation can take several weeks. Knowing the typical install time helps you plan your schedule and prepare your home or business for the work ahead.

How Long Does it Take to Install Standard Home AC Units?

For a single, standard air conditioning unit, such as a wall-mounted split system, the installation typically takes between 4 and 8 hours. This usually means the job can be done in one day, so if installation starts in the morning, you could be enjoying cool air by the evening.

In some instances, particularly for very straightforward setups, the process might even be finished in as little as 2 to 3 hours. Window units are the quickest installation option, often requiring just 30 minutes to fit. A simple wall-mounted unit is inherently much quicker to install compared to a concealed ducted system, which necessitates more extensive structural work.

How Long Do Multi-Split Systems & Central Air Conditioning Take to Install?

Multi-split air con systems are used when a property requires cooling in more than one room. These systems typically involve one outdoor unit connected to several indoor units, commonly between two and four. The installation of such a system generally takes around 6 to 8 hours. However, for multi-split systems designed to cover two to four rooms, the duration can extend to    

1 to 2 days. If the system is intended for three or more rooms, the installation period may increase to 2 to 3 days. Central air conditioning installations, which often involve a more integrated approach, can take up to 8 hours to complete.

How Long Does it Take to Install Whole-House Ducted Systems (HVAC)?

A comprehensive HVAC (heating, ventilation and air conditioning) system, designed to cool an entire home through a network of ducts, is a more extensive installation project. Such a complete system typically requires 3 to 5 days for installation. Should the project necessitate significant structural modifications to accommodate the ductwork or units, the timeline could extend to a full week. 

It is worth noting that replacing an old HVAC system can often be quicker than installing a brand-new one, as existing ductwork may already be in place.

How Long Does It Take to Replace an AC Compressor?

While often considered a repair rather than a full installation, replacing an air conditioner compressor is a critical task that directly impacts the unit’s functionality. This process typically takes approximately 2 to 4 hours. The compressor is the core component responsible for circulating the refrigerant, which is essential for generating cold air.

Typical Home Air Con Installation Timeframes

How Long Does Commercial Air Conditioning Installation Take?

Commercial air conditioning systems are very different from home units. They are designed to meet the demands of large spaces such as offices, retail stores, factories and hospitals. Installing air conditioning in a commercial environment comes with unique challenges. The scale, complexity and operational needs of a business often mean that new AC installation takes longer than a typical home air con installation.

While installing air conditioning in a home might be done in a single day, commercial projects can take anywhere from one day to a full week or even longer. This is entirely dependent on the system type and the building’s characteristics. Here’s what influences the timeline:

Building Size

The size of the commercial property is a major factor. Larger buildings need more extensive HVAC systems, often with multiple units, which naturally increases installation time. For comparison, when you install AC in a house, you’re usually working with a single, smaller system, which is much quicker than outfitting an entire office or warehouse.

Type of Installation & System Changeout

The nature of the project makes a big difference:

• Simple changeout: If you’re replacing an old unit with a similar one and the existing infrastructure such as ductwork, wiring and controls, is still usable, the team can often install air con in as little as one day.
• Full system replacement: A more complex project, involving new ductwork, thermostat rewiring or complete system redesign, can take three to five days or more.

Location of the HVAC Unit

Where the system will be installed matters. If the HVAC unit needs to go on a roof, especially a high or hard-to-access one, the process is more complex. Cranes or lifting equipment may be needed, which adds both time and cost. It can also require additional technicians to ensure everything is done safely.

Workspace Needs

Every business has unique requirements. Office layouts, occupancy levels and the presence of heat-generating equipment like server rooms all affect system design. Detailed heat load calculations and proper system sizing are essential and these extra planning steps can influence how long the installation takes.

Air Conditioning Installation at Chillaire

At Chillaire, we are the experts in home and commercial air conditioning. With over 30 years experience, our team provides professional air conditioning installation, maintenance or repair services. Businesses and homeowners looking to install air con or upgrade existing systems rely on Chillaire for dependable results.

Speak with our team today to arrange a free consultation and enjoy reliable comfort all year round.