Air Con Repair
If your cooling system breaks down, it might not need to be exchanged straight away. Reduce expenses and get the air flowing again with our air con repair services, maintenance and cleaning services.
Learn More →
Professional Ducted Air Con in Adelaide, SA
Gift yourself a new ducted air conditioning system and keep cool during our Adelaide summers! Get in touch with us for a FREE quote!
Get a FREE Quote
Whole-Home Ducted Air Conditioning Installation & Service Across Adelaide
When Adelaide's summer pushes past 40°C for days on end — and it does, regularly — a split system in the lounge room just doesn't cut it. Ducted air conditioning runs refrigerant lines from a rooftop or underfloor unit through insulated ductwork to every room in the house, giving you consistent, zoned temperature control whether you're in the bedroom, kitchen, or home office. At Adelaide Air Conditioning Experts, we size and install ducted systems based on your home's floor plan, ceiling height, insulation rating, and the specific heat load your suburb experiences — not a one-size-fits-all estimate pulled from a brochure.
Adelaide's Mediterranean climate creates a specific challenge for ducted systems: long, dry summers that run your compressor hard for months, followed by mild winters where the system might sit idle before being called on for heating. That stop-start cycle, combined with the dust and pollen that rolls in off the plains during northerly wind events, means your ductwork, filters, and coil surfaces need attention at least once a year to keep airflow efficient and energy costs from creeping up. We also offer split system installation for rooms or additions where extending ductwork isn't practical — so you're not locked into one solution for the whole property.
Picture a four-bedroom home in Norwood or Prospect built in the 1980s with a ducted system that's 12 years old and struggling to cool the back rooms by mid-afternoon. Nine times out of ten, the culprit is a combination of undersized return air grilles, duct joints that have separated in the roof cavity, and a refrigerant charge that's drifted low. Our diagnostic process checks all of these before we recommend anything — because replacing a system that just needs a re-commission and duct repair is a waste of your money. If your existing system is genuinely beyond economical repair, we'll give you a straight answer and a properly engineered replacement quote.
What We Offer
- Zoned ducted system design with room-by-room airflow balancing
- Rooftop and underfloor unit installation suited to Adelaide roof types and slab homes
- Insulated flexible ductwork installation with sealed joints to prevent conditioned air loss
- Return air grille sizing and placement for correct static pressure across the system
- Refrigerant charging and leak testing to Australian refrigerant handling standards
- Duct integrity inspection using pressure testing and roof cavity inspection
- Zone controller and smart thermostat setup for programmable temperature scheduling
- Annual ducted system service including coil cleaning, filter replacement, and drain line flush
How We Design and Install Ducted Air Conditioning in Adelaide Homes
From heat load calculation to balanced commissioning — here's what the installation process actually involves.
Step 1: Home Assessment and System Sizing
We walk through your home and measure every room, assess ceiling insulation, check the roof cavity space available for ductwork runs, and calculate the heating and cooling load using the floor area, window exposure, and your home's construction type. Adelaide homes vary enormously — a rendered brick home in Unley holds heat very differently to a lightweight-framed new build in Mawson Lakes — and the system capacity has to match your actual building, not a generic square-metre formula. You'll get a written design proposal showing unit capacity in kilowatts, duct layout, zone configuration, and return air locations before any work begins.
Step 2: Ductwork Layout and Roof Cavity Installation
Once the design is confirmed, we run insulated flexible duct from the central air handler to each outlet grille, keeping bends gradual and duct lengths as short as possible to maintain airflow velocity. All duct connections are sealed with purpose-made mastic or foil tape — not just friction-fitted — so conditioned air actually reaches the rooms it's meant to. In Adelaide's hot roof cavities, which can exceed 70°C on a January afternoon, using correctly rated insulated duct is non-negotiable for both efficiency and duct longevity.
Step 3: Unit Installation and Refrigerant Commissioning
The indoor air handler and outdoor compressor unit are positioned, mounted, and connected with pre-insulated refrigerant line sets. Our licensed refrigerant technicians pressure-test the system with nitrogen before introducing refrigerant, checking for any micro-leaks at brazed joints or flare connections that would cause the system to underperform within a season. Once the refrigerant charge is confirmed to the manufacturer's specification, we run the system through a full heating and cooling cycle, measure supply air temperatures at every outlet, and adjust zone dampers to balance airflow across the house.
Step 4: Zone Controller Setup and Handover
We program your zone controller or smart thermostat with your preferred schedules, walk you through how to adjust zones independently, and explain how to get the most out of the system during Adelaide's shoulder seasons — when overnight temperatures drop but afternoons are still warm. You'll also get a clear rundown on filter locations, how often to clean or replace them (typically every 3 months during heavy use), and what to watch for that would indicate a service is needed before your annual maintenance visit.
What a Properly Installed Ducted System Delivers for Your Adelaide Home
Even temperatures, lower running costs, and a system that works with your home — not against it.
Even Temperatures in Every Room, Not Just the Main Living Area
A properly sized and balanced ducted system eliminates the hot back bedroom or the office that never quite cools down — problems that are almost universal with undersized or poorly commissioned systems. Because Adelaide's summer heat loads are front-loaded (north and west-facing rooms cop the brunt in the afternoon), correct zone damper adjustment means those rooms get more airflow when they need it most. The result is a home where you're not constantly moving between the one cool room and the rest of the house.
Lower Running Costs Compared to Multiple Independent Units
Running one correctly sized inverter-driven ducted system across a four-bedroom home typically draws less power than running three or four split systems simultaneously, because the central compressor modulates its output rather than cycling on and off. Sealed ductwork with proper insulation means the energy you're paying for actually reaches the rooms, rather than bleeding into a 65°C roof cavity. Over an Adelaide summer — which can mean four to five months of near-daily air conditioning use — that efficiency difference adds up to a meaningful reduction on your electricity bill.
A Discreet System That Doesn't Dominate Your Walls or Ceilings
Ducted systems are largely invisible — flush ceiling grilles, a compact rooftop or underfloor unit, and a small wall controller are all you see inside the home. There are no wall-mounted indoor units in every room, no refrigerant lines running along skirting boards, and no individual remotes cluttering up every surface. For Adelaide homeowners who've renovated or are planning to sell, a concealed ducted system adds genuine appeal without the visual clutter of multiple split systems.
Why Adelaide Homeowners Choose Adelaide Air Conditioning Experts for Ducted Air Con
Adelaide-Specific System Design, Not a Catalogue Spec
We design every ducted system around the actual heat load of your home and suburb — accounting for Adelaide's high summer UV index, the thermal mass of brick and render construction common in inner suburbs, and the roof cavity temperatures that can make undersized ductwork a real efficiency problem. That means you're not paying to cool a system that's fighting against your building's characteristics from day one.
Licensed Refrigerant Handling on Every Job
All refrigerant work — charging, recovery, and leak testing — is carried out by technicians holding an Australian Refrigerant Handling Licence, as required under the Ozone Protection and Synthetic Greenhouse Gas Management Act. We don't subcontract the technical work out to reduce costs, which means accountability for the whole installation sits with one team.
Honest Assessment Before Any Replacement Recommendation
If your existing ducted system has a fault that can be fixed — a failed capacitor, a separated duct joint, a low refrigerant charge — we'll repair it rather than push you toward a new system. Our [air con repair](/services/air-con-repair) service covers the full range of ducted system faults, and we'll always give you a repair-versus-replace comparison with realistic cost and lifespan figures so you can make an informed decision.
Post-Installation Commissioning That Actually Balances the System
A ducted system that isn't properly commissioned — with airflow measured and dampers adjusted at every outlet — will always have rooms that are too hot or too cold, no matter how good the equipment is. We measure supply air velocity and temperature at every grille before we hand over, and we adjust the system until the balance is right, not just until the thermostat reads the set temperature in the main zone.
Ducted Air Conditioning Questions Adelaide Homeowners Ask Most
Common questions answered
How long does a ducted air conditioning installation take in an average Adelaide home?
For a standard three or four-bedroom home, installation typically takes two to three days — one day for ductwork runs in the roof cavity and grille installation, and a second day for the unit mounting, refrigerant line connection, electrical work, and commissioning. Larger homes or those with difficult roof cavity access (low-pitch roofs are common in some older Adelaide suburbs) may take an additional day. We'll give you a realistic timeframe when we assess the site.
What size ducted system does my Adelaide home need?
Sizing depends on your home's total floor area, ceiling height, insulation level, window area and orientation, and how many zones you want to control independently — it's not simply a case of matching kilowatts to square metres. A poorly insulated 1970s brick home in a western suburb will need significantly more capacity than a well-insulated new build of the same size in the hills. We calculate this properly using a heat load assessment rather than a rule-of-thumb estimate.
How often should a ducted system be serviced in Adelaide's climate?
Once a year is the minimum, and ideally before summer starts — so around September or October — when the system is about to carry its heaviest load. Adelaide's dry northerly winds carry fine dust and plant material that clogs filters and coats evaporator coils faster than in more temperate climates, which reduces airflow and forces the compressor to work harder. A service includes filter cleaning or replacement, coil inspection, drain line flush, refrigerant pressure check, and a check of all electrical connections.
Can I add zones to an existing ducted system, or replace just part of it?
In many cases, yes — if the existing ductwork is in good condition and the air handler has sufficient capacity, we can retrofit motorised zone dampers and a multi-zone controller to give you independent room control without replacing the whole system. If the ductwork has significant joint separation or the unit is undersized for the number of zones you want, we'll be upfront about whether a partial upgrade is worthwhile or whether a full replacement makes more economic sense over a five-to-ten year horizon.
What's the difference between a ducted reverse cycle system and a ducted cooling-only system?
A reverse cycle system uses the refrigeration cycle in both directions — cooling in summer and heating in winter — making it the practical choice for Adelaide homes where winters are mild but still cold enough to need heating from June through August. A cooling-only system is cheaper upfront but leaves you needing a separate heating solution, which most Adelaide households already have covered by gas ducted heating. If you're replacing an older cooling-only ducted system, it's worth considering whether switching to reverse cycle makes sense given Adelaide's energy prices and the increasing length of its warm seasons.
Ducted Air Con Service Areas
We provide ducted air con throughout Adelaide, SA and surrounding suburbs
Don't see your area? Contact us to check if we service your location!
View All Areas