If you’ve ever sat in your car outside Grand Plaza on a February afternoon, dreading the walk across the car park, you already know what a Logan summer feels like. Inside the house, it’s often worse.
A lot of Logan families are in the same situation. The home was built in the late 80s or 90s, there might be a wall unit in the lounge and another in the main bedroom, and the rest of the house just gets hot and stays hot. They want ducted air conditioning, but they’re not sure whether it’s even possible in their home without major structural work.
The honest answer is that most Logan homes can be retrofitted with ducted AC. But the right outcome depends on a proper site assessment, the right system choice, and an installer who’s straight with you about what’s involved.
Question: Can you retrofit ducted air conditionig in my home
Quick Answer: The majority of Logan homes built before 2000 can be retrofitted with ducted air conditioning, provided there’s adequate roof cavity space and a workable duct run path. The Daikin Slim-Line Ducted, with a profile of just 245mm, gives us solutions for tight roof spaces that would have ruled out ducted AC entirely a generation ago.
Here’s what we look for and how we approach it.
Why Logan Housing is Well Suited to Ducted Retrofits
The housing stock across Logan genuinely works in our favour.
Most homes built through the 1980s and 90s are single-storey brick or weatherboard construction on a conventional pitched roof. That’s actually the ideal retrofit scenario. A pitched roof gives us working height in the cavity. Single-storey means one set of ductwork covers the whole home. And the typical floor plan of those eras means a well-zoned 10kW to 14kW Daikin system can condition every room comfortably.
The newer growth corridors to the south and west tell a different story. Double-storey homes on tighter blocks are standard in those areas, which requires more planning. We typically duct the upper floor separately or design the duct runs carefully from the upper roof cavity down to each room. It’s very achievable, but it does require a thorough assessment before we commit to a design.
The trickier situations are homes with skillion roofs, very low-pitch rooflines, or flat sections over extensions. These are less common in Logan than in inner-Brisbane, but they do exist in some of the older housing around the area. For those homes, the Daikin Slim-Line is often the answer.
What We’re Actually Looking for During a Site Assessment
When we come out to your home, here’s what shapes our thinking.
Roof cavity height and access. The indoor unit needs enough clearance to be suspended safely from the trusses, and the ductwork itself takes up additional space. Duct diameters range from 200mm to 400mm depending on the airflow required for each zone. The Daikin standard Inverter Ducted indoor unit has a low-profile height of 360mm or less. For tighter cavities, the Daikin Slim-Line comes in at just 245mm, which fits in spaces that would have ruled out ducted AC entirely not long ago.
Truss configuration. The indoor unit is suspended from the trusses or on a platform built between the webs to prevent vibration transferring to your ceiling. We need adequate spacing between trusses to position the unit, and we need to confirm it can sit centrally enough to run balanced duct paths to each zone. In most Logan homes this isn’t an issue, but we always check.
Duct run paths. A ducted system only performs well when the ductwork can reach every room without excessive bends or restrictions. Too many changes of direction create static pressure problems, which means weak airflow at the outlets furthest from the unit. The Daikin Slim-Line DC fan manages a static pressure of 150Pa with up to 75 metres of available pipe run. That covers most Logan floor plans comfortably.
Return air design. This is the part most homeowners don’t think about, but it matters enormously. Every ducted system needs a clear return air path back to the indoor unit. We design the return air grille location with as much care as the supply outlets. A poorly designed return air setup will undermine even the best system.
Electrical supply. A ducted system draws more sustained power than individual split systems. We check your switchboard during the assessment to confirm it can handle the load, and we flag any upgrades needed before you commit to anything.
Which Daikin System Suits Your Logan Home?
Getting the size right is the most important decision in the whole process.
An undersized system runs flat out on a 35°C afternoon and never quite catches up. An oversized system short-cycles and uses more power than the home actually needs. Neither is good for your comfort or your electricity bill.
Here’s how the Daikin range maps to the home types we commonly see across Logan:
| Home Type | Recommended Daikin System | Indoor Unit Height | Capacity Range |
|---|---|---|---|
| Single storey, standard roof cavity | Daikin Premium Inverter (FDYA) | Standard | 10kW to 20kW |
| Single storey, tight truss spacing | Daikin Inverter Ducted | 360mm or less | 5kW to 20kW |
| Low pitch or restricted roof space | Daikin Slim-Line | 245mm | 5kW to 14kW |
| Double storey, upper floor | Daikin Inverter Ducted | 360mm or less | 8kW to 16kW |
System selection should always be confirmed by a site assessment. These pairings are based on common Logan housing types.
As authorised Daikin specialists in Logan, we find the FDYA160 at 16kW is often the sweet spot for double-storey homes in newer estates. The capacity handles the thermal load of a two-storey home on a Queensland summer day without pushing the system to its limits. That matters because a system running at moderate inverter speeds draws less power, which is good news if you’re also on solar.
The Daikin Premium Inverter range also includes R22 retrofit capability on most models, which is relevant for homes that still have older R22 systems in place. In some cases, we can use the existing field piping, which reduces installation cost and disruption significantly.
All Daikin systems we install use R32 refrigerant, carrying a Global Warming Potential 66% lower than the previously common R410A, and all comply with AS/NZS 5149 (Refrigerating systems and heat pumps — Safety and environmental requirements).
Replacing an Existing Multi-Split Setup
A lot of the retrofit enquiries we get come from families who have accumulated split systems over the years. One in the lounge, one in the main bedroom, maybe one in a second bedroom added later. They’re tired of managing multiple remotes, inconsistent temperatures across the home, and wall units that are starting to look their age.
Replacing a collection of split systems with a single Daikin ducted setup is one of the most satisfying jobs we do. The result is whole-home comfort from one controller, clean ceilings with only small grilles visible, and better efficiency because the inverter ducted system modulates its output continuously rather than cycling multiple independent units on and off.
It’s worth knowing that existing lights or ceiling fans may need to be relocated to accommodate grille positions. We walk through this during the planning stage so there are no surprises on installation day. In most cases we can design outlet positions to work around existing ceiling features.
What the Installation Day Actually Looks Like
Most single-storey Logan home retrofits are complete within one to two days.
The outdoor unit goes in at ground level, typically at the side or rear of the home in a position that meets any council noise setback requirements. The indoor unit is installed in the roof cavity, suspended from the trusses. Insulated flexible ductwork runs through the roof space to each zone outlet. Return air grilles are cut and fitted, electrical connections are made by our licensed electricians, and the Advantage Air iQ controller is commissioned and tested zone by zone before we hand over.
We work carefully around your home throughout the process. One of the things our customers consistently mention is that we leave everything the way we found it. That’s not an accident, it’s part of how we operate on every job.
What Does a Ducted Retrofit Cost in Logan?
We’re not going to put a number here that may not reflect your home.
Retrofit cost varies based on roof accessibility, the number of zones required, duct run distances, and whether any electrical upgrades are needed. What we can tell you is that for a standard single-storey Logan home needing 4 to 6 zones, our quotes are transparent, competitive, and include everything from Daikin system supply through to full installation and commissioning.
What we won’t do is quote you a low figure to win the job and find additional costs later. Our Costing Transparency Guarantee means any changes to project scope are communicated before work proceeds.
If you’re also on solar, or planning to be, it’s worth knowing that a retrofitted Daikin ducted system paired with Advantage Air iQ Solar Mode can reduce grid reliance significantly by pre-cooling your home during peak generation hours. We cover this in detail in our article on ducted AC and solar panels in Logan.
Questions We Hear Often
Yes, though it typically requires either two separate systems or careful duct design to serve both floors. We assess every double-storey home individually before recommending an approach.
In our experience across Logan, yes. Whether a home is near the Hyperdome, around the corner from Grand Plaza, or out in one of the newer estates, “ducted reverse cycle throughout” is a genuine selling point that buyers notice. An established home with ducted AC presents differently to one with ageing wall units.
Yes. We remove and responsibly dispose of existing split systems as part of the retrofit process. All refrigerant recovery is handled by our ARCtick-licensed technicians in compliance with the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989 (Cth).
For most single-storey Logan homes, the installation is complete within one to two days. We access the roof space through existing or new manhole locations, and ceiling penetrations for grilles are cut precisely and finished cleanly. Most families stay home during the installation without significant disruption.
Daikin’s 5-year parts and labour warranty applies to all ducted systems professionally installed in Australian homes. Our own workmanship guarantee runs for the same period. If something isn’t right, we come back and fix it.
Our Honest Take
We do a lot of retrofits across Logan, and we wouldn’t keep doing them if we weren’t confident in the outcomes.
Daikin’s range has evolved to the point where the indoor unit profile is no longer the barrier it once was. The Slim-Line option means that homes we might have talked out of ducted AC five years ago are now viable. That said, we won’t tell you ducted is the right answer for every home. If your roof space genuinely can’t support a ducted install, or if the duct geometry would compromise performance, we’ll tell you that directly and talk through the alternatives.
Getting the right solution for your home matters more to us than selling you the most expensive one.
If you’d like to find out whether your Logan home is a good candidate for a ducted retrofit, the best starting point is a no-obligation site assessment. We’ll look at your roof space, talk through your zones, and give you an honest answer before anything else.
Call us on 1300 224 968 or request a free quote
ClimateLink Pty Ltd. QBCC 15381611 | ARCtick AU59501 | Electrical Lic 166448. Proud Daikin specialists servicing Logan, Browns Plains, Greenbank, Yarrabilba, Rochedale, Regents Park, Forest Lake and surrounds.