How Long Does Air Conditioning Installation Take? A Queensland Homeowner’s Guide

Most air conditioning installations in Queensland take between 4 and 8 hours for a single split system, and 1 to 3 days for a fully ducted reverse cycle system. A standard back to back split system in a single storey home can be finished comfortably in half a day, a multi head split with two or three indoor units usually runs across a full day, and a whole home ducted install with multiple zones generally needs one to three days depending on roof access, electrical work and the size of the property. Commercial cassette installations and complex two storey ducted systems can stretch longer, especially when extra ductwork or a switchboard upgrade is involved.

At AC Store, we have installed thousands of systems across Brisbane, North Lakes, Sunshine Coast, Carindale and Moreton Bay. Led by Steve and James, our team prides itself on tidy, predictable installs that respect your time and your home. So if you are planning your install around a work day, a builder’s schedule, or a hot weekend, this guide will walk you through realistic timeframes and the real world factors that can shift them.

What Factors Can Affect Air Conditioning Installation Time?

The honest answer is that no two installs are exactly the same. The unit on the spec sheet might say it can be fitted in a few hours, but the structure of your home, the placement of your outdoor unit, the age of your switchboard, and even the weather all influence how the day unfolds. Below are the biggest variables our installers see across Queensland.

Type of System

The single largest driver of installation time is the type of system you choose. A wall mounted split is much quicker than a fully ducted reverse cycle install, and a cassette unit sits somewhere in the middle. Here is what each one usually involves.

Ducted Air Conditioning

A ducted reverse cycle system is the most involved type of residential install. Our technicians need to position the indoor fan coil unit in the roof cavity, run insulated flexible ductwork to every room that needs conditioning, install ceiling vents and grilles, fit motorised dampers for each zone, mount the outdoor compressor unit, run refrigerant lines and condensate drainage, wire in the controller, and commission the whole system before handover.

For a typical three to four bedroom Queensland home with four or five zones, expect the install to take 1 to 2 days. Larger homes with seven plus zones, two storey homes, or homes with tight roof access can stretch to 2 to 3 days. New build installs can sometimes be completed faster because the ceiling is open, while retrofits in existing homes always take a little longer because we work around your insulation, roof structure and existing wiring. If you are weighing up your options, our ducted air conditioner quotes page explains how we tailor pricing and timelines to your specific home.

Split-System Air Conditioning

A standard wall mounted split system in a single storey home with a back to back installation (where the indoor and outdoor units are on opposite sides of the same external wall) usually takes 4 to 6 hours. That covers mounting the bracket, drilling the wall penetration, setting up the indoor head, mounting the outdoor unit on a slab or wall bracket, running and insulating the refrigerant pipes, vacuum testing the lines, charging the system if needed, electrical connection and commissioning.

Where a split system install runs longer, it is usually because the outdoor unit needs to go further from the indoor head, the pipe run needs to travel up through ceilings or down through cavity walls, or the home is double storey. Two storey installs commonly take 6 to 8 hours, and complex pipe runs can push that to a full day. To get an accurate timeframe for your home, request a split system quote and we will inspect the layout before we commit to a date.

Portable Air Conditioning

Portable units do not really need professional installation. You wheel them into a room, run the exhaust hose to a window, plug them into a power point and switch on. Setup typically takes 15 to 30 minutes. The trade off is that portables are noisier, less efficient and only suitable as a short term or single room solution. Most Queensland families find that a properly installed split system delivers far better comfort for very similar money once you factor in running costs.

Cassette Air Conditioning

Ceiling cassette units are popular in offices, retail spaces, larger living areas and apartments with concrete ceilings. A single cassette install usually takes 6 to 10 hours because the indoor unit has to be lifted into the ceiling cavity, the grille has to be aligned perfectly, condensate pumps and drains need to be connected, and the outdoor unit still needs to be mounted and piped in. Multi cassette commercial fitouts can run across several days depending on the number of indoor units, the ductwork between them, and any rigging or scaffold required.

Typical Air Conditioning Installation Times by System Type

System Type	Indoor Units	Typical Install Time	Best For
Portable AC	1 (no install)	15 to 30 minutes	Short term, rentals, single rooms
Single Split System	1	4 to 6 hours	One bedroom or living area
Multi Head Split	2 to 4	1 to 1.5 days	Apartments, smaller homes, no roof access
Ceiling Cassette	1	6 to 10 hours	Commercial, large open plan rooms
Ducted Reverse Cycle (Small)	Whole home, 2 to 3 zones	1 to 1.5 days	1 to 2 bedroom homes
Ducted Reverse Cycle (Medium)	Whole home, 4 to 5 zones	1.5 to 2 days	3 to 4 bedroom homes
Ducted Reverse Cycle (Large)	Whole home, 6 to 10 zones	2 to 3 days	5+ bedroom or two storey homes

The Size Of Your Residential or Commercial Property and Layout

Bigger homes simply take longer. Every additional zone adds ductwork, vents, dampers and sensors, and every extra metre of refrigerant pipe adds to the labour. A simple single storey four bedroom rectangular floorplan is faster to duct than a U shaped home or a split level on a sloping block. Homes with steep pitched roofs, low headroom in the ceiling cavity, exposed beams or limited manhole access all push the install longer because our technicians need to crawl, lift and manoeuvre in tight spaces.

Commercial properties bring their own variables. Suspended ceilings need to be dropped and reinstated, fire compliance needs to be considered, and works often have to happen outside business hours. If you are building or renovating, the smartest move is to involve us at frame stage. Pre wired and pre planned ducted installs are quicker, neater, and almost always cheaper than retrofits.

The Customisation or Additional Features To Your Aircon

Smart controllers, Wi Fi modules, AirTouch zone systems, individual room sensors, additional return air points, decorative diffusers and integrated home automation all add value, and they also add a little time to the install. Linking your system to LG ThinQ, Mitsubishi Wi Fi or an AirTouch 5 controller usually adds 1 to 2 hours of programming and pairing, but the long term comfort and running cost savings are well worth it. Read more about how we set up smart connected systems in our guide to LG and AirTouch smart home air conditioning.

The Number of Units or Zones

Each indoor unit and each zone adds to the timeline. A multi head split system with three indoor units takes longer than a single split because each head needs its own bracket, wall penetration and pipe run, even though they share one outdoor unit. A ducted system with seven zones takes longer than one with four because there are more dampers, more vents, more sensors and more commissioning. As a rough rule of thumb, every additional zone or indoor head adds 1 to 2 hours to the total install time.

Unexpected Factors That Can Influence The Time of an Installation

Even with perfect planning, a handful of factors can stretch installation day. None of them are showstoppers, but knowing about them ahead of time helps you plan realistically.

Weather

Queensland summer storms and heavy rain can pause outdoor work, particularly when the outdoor unit needs to be mounted on a roof or upper level wall. We never compromise safety to keep on schedule. If a storm rolls in, our team will pause outdoor work until conditions are safe and continue with indoor tasks in the meantime. Cyclone season on the Sunshine Coast and around Moreton Bay can occasionally push installs by half a day.

Seasonal Demand

Spring and early summer (October to December) are the busiest months for installs across South East Queensland. Lead times for booking can stretch to two to four weeks, and same day or next day installs are rare in peak season. If you book in winter or early autumn, you generally have more flexibility on dates and sometimes shorter lead times. Planning your install before the heat hits is one of the smartest moves you can make.

The Installer Experience and Preparation

This is where AC Store really earns its reputation. An experienced two person team with the right vehicle stocked, the right brackets and pipe lengths in the van, and a clear plan from the site assessment will finish a split install in 4 to 5 hours. A less experienced installer or one who turns up missing parts can stretch the same job to a full day. We arrive prepared, with the system, brackets, pipe insulation, drain lines, fixings and electrical accessories already loaded based on your pre install inspection.

We also pre register your warranty, walk you through the controller, hand over your paperwork and tidy up before we leave. If anything ever needs attention down the line, our warranty covers both the manufacturer’s terms and our installation workmanship.

Combining several of these is the realistic way to make a ducted system more affordable in 2026. AC Store can help map your eligibility against your install plan when we visit for an in home assessment. If you live north of the river, our north lakes store is also a great place to drop in for a chat.

Things to Know Before Installation Day

Before our team arrives, a little preparation on your end goes a long way to keeping the install on schedule:

Clear access to the wall where the indoor unit will be mounted, the manhole that leads into the roof cavity, the outdoor unit location, and the switchboard. Move furniture, artwork and curtains away from the install zones, and lift any breakables off shelves below pipe runs. If you have pets, plan to keep them in a separate part of the house for the day so that doors can be opened freely.

Confirm parking. Our installers travel with a fully fitted van that needs to be close to your home for tools and the system itself. If you have a steep driveway, narrow street or restricted parking, let us know in advance.

Check your switchboard. Pre 1990s homes often need an upgrade or a dedicated circuit, and that work needs an electrician. We will flag this at the site assessment, but knowing it ahead of time helps you budget the time and the cost.

Have someone home for the duration. Most councils and warranties require the homeowner to sign off on the commissioning and final walkthrough. Plan for one adult to be on site for the install, even if you are not actively involved.

Installation Day Timeline for a Standard Split System

Stage	What Happens	Time Required
Arrival and Site Walk Through	Confirm placements, check switchboard, lay drop sheets	15 to 30 minutes
Indoor Unit Mounting	Bracket, wall penetration, mount indoor head	45 to 60 minutes
Outdoor Unit Mounting	Slab or wall bracket, position compressor	30 to 45 minutes
Pipework and Wiring	Run refrigerant lines, drain, control wiring, insulate	1.5 to 2 hours
Vacuum and Charge	Pressure test, vacuum lines, release refrigerant	30 to 45 minutes
Electrical Connection	Connect to dedicated circuit, isolator switch	20 to 30 minutes
Commissioning and Handover	Run system, check temperatures, demonstrate controller	20 to 30 minutes
Cleanup	Remove rubbish, vacuum work zones, walk through with you	15 to 30 minutes
Total		4 to 6 hours

Book Your Installation with AC Store

If you live in Brisbane, North Lakes, Burpengary, Caboolture, Palmview, Buderim, Deception Bay, Carindale or anywhere across the Sunshine Coast and Moreton Bay, AC Store is the team that gets installs done on time, on budget and on a tidy worksite. Steve, James and our technicians have built our reputation on honest timeframes, fixed pricing, and proper aftercare.

Whether you need a quick split fitted in a bedroom, a multi head system for a townhouse, or a fully zoned ducted system for a brand new family home in ducted or split system air conditioning north lakes, we will give you a clear timeline before we start so you can plan your day. After the install, we offer ongoing service plans and you can book a service any time to keep your system running at peak efficiency.

Ready to Book Your Air Con Install?

Air conditioning installation does not need to be stressful or unpredictable. With AC Store, you get a clear timeline, a tidy crew, fixed pricing in writing, and the local knowledge that only comes from years of installing across Queensland’s unique homes. Steve, James and the team are ready to help you plan, book and enjoy your new system, whether that is a single split for the master bedroom or a fully zoned ducted setup for the whole family.

Frequently Asked Questions