October 1, 2026
Old air conditioning slows down. It gets loud. It stops cooling rooms the way it used to.
If you own an older home in Sydney, installing ducted air conditioning can come with a few challenges. Limited roof space, existing ductwork and ceiling structure can all affect how your installer designs the system.
At Roberts Air Conditioning we design and install ducted systems in older Sydney homes. We work around solid walls, low ceiling cavities, and heritage features most installers avoid.
In this guide, we cover when to replace your old air conditioner and what to consider when installing ducted air conditioning in an existing home.
Yes, old ducted air conditioners can be installed in older homes across Sydney.
Unlike a new build, an existing home already has its structure, ceilings, roof space and electrical systems in place. Your installer needs to work around these features when planning the system.
A professional assessment should look at:
This helps determine the best system and installation approach before any work starts
Many Sydney homeowners keep an ageing system running for years past its prime. Here are the signs it's time for a change:
If any of these sound familiar, a new system will likely cost less to run and cool your home far better than your current one.
Every home is different, so the right system depends on your layout and how much space you have to work with.
Discover our guide to picking the right air conditioner for your space.
When choosing an air conditioner installation company in Sydney, look for a team that can help with the whole process, from system selection and design through to installation.
At Roberts Air Conditioning we have completed more than 5,000 residential installations across split systems, ducted systems and VRV systems. This includes air con installation in older homes with heritage features and tight ceiling cavities. Our technicians are fully licensed, CM3 certified, and ARCtickaccredited, with a 4.9-star rating from over 300 customer reviews.
We service homes across Sydney, including Western Sydney, lower Blue Mountains, and the Penrith and Cranebrook areas.
For existing homes, the focus should be on getting the design right before installation begins. This helps your installer plan the ductwork, equipment and access requirements around the home.
Whether you are installing ducted air conditioning for the first time or looking to replace an old air conditioner, our team of professionals can help you choose a system that suits your property.
If your current system needs attention rather than replacement, our Air Conditioning Repairs and Servicing & Maintenance teams can help too.
Whether you are replacing an old ducted system or installing air conditioning in an existing home, the right design can make all the difference.
Roberts Air Conditioning can assess your home, work around existing spaces and recommend a system that suits your layout, comfort needs and budget.
Call (02) 8809 3704 or email enquiries@robertsairconditioning.com.au to discuss your home and arrange a free consultation.
How do I know if my old ducted air conditioner needs replacing?
Look out for uneven cooling, rising energy bills, strange noises from the ducts, and frequent repairs. If your system is over 10 years old and showing these signs, replacing it is usually more cost-effective than repairing it again.
Who are the specialists in Sydney for designing ducted air conditioning in older homes?
Look for a licensed installer with specific experience in older and heritage homes, not just new builds. Roberts Air Conditioning designs every ducted system around your home's existing structure, so ceilings, cornices, and original features stay intact during installation.
How much does ducted air conditioner installation cost in Sydney?
The cost depends on factors such as the size of the home, system capacity, number of zones, roof access, ductwork and installation requirements. A property assessment is the best way to receive an accurate quote.
Can ducted air conditioning be installed in an old house?
Yes. Ducted air conditioning can be installed in many older homes. The available roof space, home layout, ceiling access and existing electrical system will all need to be considered during the design.
