❄️ Need a split system installed in Cornubia? Call Aaron now — 0419 014 146 — ARCtick certified, based just 15 minutes away in Capalaba QLD
Split System Installation Cornubia — ARCtick Certified Supply & Install
Cornubia is one of the bigger-house pockets in the Redlands — two-storey estate homes from the 90s and 2000s with high ceilings, double-height voids and four or five bedrooms spread across two levels. Standard single splits often struggle here, which is why multi-head systems and properly sized inverter units are the norm. Aaron handles the full supply and install as your ARCtick-certified installer and licensed electrician, based 15 minutes away in Capalaba.
Efficient Cooling for Cornubia Homes
The estate homes that dominate Cornubia were built when bigger was better and ceilings were getting taller. That's a beautiful look but a real cooling challenge — heat rises into double-height entry voids and stays there, while bedrooms upstairs cop the worst of the afternoon sun through west-facing windows. Sizing a split system for a Cornubia home means actually doing the math, not eyeballing the room.
Most Cornubia homes were built with ducted in mind, but plenty of owners have decided the old ducting is past its useful life and a multi-head split makes more sense than re-ducting the whole house. You get individual zone control for each bedroom, no shared ducts collecting dust in the roof cavity, and the running costs come down because you only cool the rooms you're using rather than the whole upstairs.
Reverse cycle means Cornubia homes get both summer cooling AND winter heating from the one system. Multi-head is especially handy for zoning warmth into the rooms people are actually using.
Aaron holds an ARC Refrigerant Handling Licence (No. L1833747) and a Queensland Electrical Licence (No. 1500996). On a typical Cornubia multi-head job — five indoor heads, switchboard work, dedicated circuits — having one qualified tradesperson handle the gas, the electrical and the brackets means it gets finished in a day instead of dragged across three trade visits. Your full air conditioning installation done properly, end to end.
Not sure which split system is right for your Cornubia home? Call Aaron for practical advice.
📞 0419 014 146Split System Services — Cornubia & Redlands
From a single bedroom split to a 5-head system covering an entire two-storey Cornubia estate home (or full ducted air conditioning — see our comparison guide), Amplus does the lot across Cornubia and the broader Logan/Redlands area.
Single Split System Supply & Install
A single high-capacity split is the right call for the main living zone in many Cornubia homes — a 7–8kW unit handles a 40–50m² open-plan kitchen and family room, and you keep the bedrooms on a separate solution.
- Wall-mounted indoor unit installation
- Outdoor compressor unit mounting
- Refrigerant pipe runs (up to 5m standard)
- Dedicated electrical circuit from switchboard
- Refrigerant charging & commissioning
- Full system test & handover
For Cornubia's bigger living zones we rarely recommend below 7kW. Aaron measures the room properly and factors in ceiling height, voids and west-facing glass before quoting.
Multi-Head Split System Installation
Multi-head systems are the bread and butter of Cornubia work. A 4 or 5-head outdoor unit drives all the upstairs bedrooms plus a bonus room from one condenser, leaves no shared ductwork, and gives every room its own controller.
- 2-head to 5-head configurations
- Mix of wall-mounted & floor-console units
- Individual room temperature control
- Single outdoor unit — less external clutter
- Dedicated circuits for each indoor unit
- All major brands available
A 4-head system for a typical Cornubia upstairs runs $7,500–$11,000 installed depending on brand and head sizing. Less roof penetration than retrofitting ducted, and zone-by-zone control built in.
Split System Servicing & Maintenance
Bigger systems with more indoor heads need more attention, not less. Coils, filters and drainage all benefit from an annual once-over before summer, and we'll spot small refrigerant losses on multi-heads before they take out a head unit.
- Filter cleaning & replacement
- Evaporator & condenser coil cleaning
- Refrigerant level check
- Drain line flush & inspection
- Electrical connection check
- Performance & efficiency testing
We recommend pre-summer servicing for any Cornubia multi-head with more than three heads — small refrigerant losses are easier to track down before summer load reveals them as cooling failures.
Split System Repairs & Fault Finding
Multi-head systems have specific failure modes — one head not cooling, refrigerant balance issues across zones, communication faults between heads and the master controller. We diagnose them properly rather than swapping parts and hoping.
- Not cooling / not heating diagnosis
- Refrigerant leak detection & repair
- Compressor & fan motor faults
- PCB & control board issues
- Drainage problems & water leaks
- Error code diagnosis & reset
On multi-heads, the cheap fix is rarely the right fix. Aaron walks you through what's actually wrong before quoting any work.
Outdoor condenser unit — commissioning with refrigerant gauges
Indoor wall unit — living room installation completed
Split System Brands We Supply & Install
We install every leading split system brand available in Australia. For the large two-storey Cornubia estate homes we often recommend the multi-head capable ranges. See our full air conditioning services if ducted is on your mind.
Daikin
Daikin's multi-head range (the MXS series) is well-proven in Cornubia's bigger estate homes — capacity options up to 12.5kW outdoor with 5 heads, and individual room controllers as standard.
Mitsubishi Electric
Mitsubishi Electric's MXZ multi-split range is our go-to for Cornubia's premium installs. Quiet outdoor operation matters when you've got two-storey neighbours close to the boundary, and the energy ratings are class-leading.
Fujitsu
Fujitsu's multi-head systems offer strong value at the 3 and 4-head end of the range. Good fit for Cornubia families wanting to cool 3 upstairs bedrooms without stretching the budget into Daikin or Mitsubishi territory.
Panasonic, Samsung, LG & More
Panasonic, Samsung and LG all offer competent multi-head systems too. We supply through trade accounts and recommend based on the install — not what's overstocked. Aaron's straight about what each brand does well.
Not sure which split system brand suits your home?
📞 Call Aaron — 0419 014 146How Split System Installation Works — 4 Steps
From first call to cool air in your Cornubia home — here's how it works.
Heat-Load Calculation First
Cornubia's bigger homes don't suit guesswork. Aaron measures every room you want cooled, checks ceiling heights and window orientations, and works out the total capacity needed before recommending a multi-head configuration.
Supply & Schedule
Multi-head systems take longer to source and install than single units. We typically book Cornubia jobs 2–3 weeks out and confirm the day before so the household isn't disrupted unexpectedly.
Two-Day Install for Larger Multi-Heads
A 4 or 5-head install for a Cornubia upstairs is usually a two-day job — pipe runs through the roof cavity, indoor heads mounted, outdoor condenser placed, electrical circuits added. We work cleanly and tarp-up where needed.
Commissioning & Zone Setup
Each indoor head is commissioned individually, refrigerant charges balanced across the system, and we walk you through controller pairing for every zone. Compliance certificates issued and you're cooling the same day we finish.
Split Systems in Cornubia — What Homeowners Should Know
Practical considerations for split system installation in Cornubia and Brisbane Bayside homes.
Voids and stairwells eat capacity
Cornubia's two-storey homes often have double-height entry voids that suck warm air upstairs and cold air down the stairs. Cooling the entry void is usually wasted money — better to cool the rooms you're actually using.
We size systems for the rooms, not the volume of the whole house. A properly placed 7kW unit in the main living area outperforms a single oversized unit trying to cool the whole ground floor.
Multi-head over re-ducted
If your ducted system is over 15 years old and not cooling properly, multi-head splits are usually a smarter spend than re-ducting. Lower install cost, individual zone control and no shared ducts collecting dust.
Re-ducting a typical Cornubia home runs $9,000–$14,000. A 4-head multi-split covering the same bedrooms plus the main living often comes in cheaper and gives you better control over running costs.
Outdoor placement on bigger blocks
Cornubia's larger blocks give us more options for outdoor unit placement. We can usually get the condenser away from bedroom windows and onto a wall where servicing is easy.
For two-storey homes, ground-floor placement under a roof overhang is ideal — protected from the weather, easy to service, and refrigerant pipe runs to upstairs heads stay within manufacturer limits.
Cooling for upstairs bedrooms
West-facing upstairs bedrooms cop afternoon sun for 4–5 hours through summer. A 2.5kW head won't cut it — these rooms typically need 3.5–5kW depending on glass area and ceiling pitch.
For master suites with ensuite and walk-in robe combined, a 5kW head handles the load with margin. Undersizing here is the most common mistake we see on Cornubia jobs done by other installers.
Your Local Split System Installer — 15 minutes from Cornubia
ARCtick certified. Licensed electrical contractor. Multi-head specialist for Cornubia's bigger homes. Fixed pricing. No subcontractors.
Why Cornubia Homeowners Choose Us for Split System Installation
Cornubia homeowners choose Amplus because we treat bigger homes seriously — proper heat-load calculations, properly sized multi-head systems, and electrical work done right by a qualified electrician rather than handed off to a subbie.
ARCtick Certified + Licensed Electrician
Aaron holds an ARC Refrigerant Handling Licence (No. L1833747) alongside a Queensland Electrical Licence (No. 1500996). That combo matters on a multi-head Cornubia install — five indoor units, one outdoor unit, and dedicated electrical work, all by the same tradesperson. No coordination headaches between an air-con bloke and a sparkie.
15 minutes from Cornubia
Aaron is based in Capalaba, 15 minutes from Cornubia via Mount Cotton Road or the M1. That's close enough for same-week response on installs and quick callouts for warranty work. We've installed plenty of multi-head systems across Cornubia's estates — from the older 90s builds near Cornubia Forest Park to the newer streets pushing toward Carbrook.
Supply & Install — Trade Pricing
Through our trade accounts with Daikin, Mitsubishi, Fujitsu and Panasonic, Cornubia customers typically pay less than retail for the same unit. Bought a system already? We'll do install-only on anything.
Clear, Upfront Pricing — No Surprises
Your Cornubia quote includes unit supply, installation, electrical (including upsized circuits for multi-head jobs), brackets and final commissioning — one number, before any work starts. Never a hidden fee.
Electrical + Air Con in One Visit
Many Cornubia multi-head installs need a switchboard upgrade to handle the added load, sometimes with new safety switches. Aaron assesses it during the quote and does the upgrade on the same install day — still one tradie, still one invoice.
Clean, Quality Workmanship
Neat pipe runs, proper insulation on every copper line, secure wall brackets rated for the unit's weight, and clean cable management. We leave Cornubia homes tidy — no mess, no exposed cables, no half-finished jobs.
Split system installation in progress — your local Amplus team on site
Split System Installation — Cornubia & Surrounding Suburbs
Based in Capalaba (QLD 4157), just 15 minutes from Cornubia, we provide split system supply, installation, servicing and repairs across all Redland City and Brisbane Bayside suburbs.
🔍 See all 19 suburbs we cover — Split System Installation Brisbane hub with brand comparisons, sizing guide, and full service area map.
Split System Installation FAQ — Cornubia
Common questions about split system installation for Cornubia homeowners.
Multi-head systems vary widely with the number of heads and brand. A typical Cornubia 4-head install (driving 3 upstairs bedrooms and a bonus room from one outdoor unit) runs $7,500–$11,000 supplied and installed. A 5-head premium system using Daikin or Mitsubishi can stretch to $13,000–$15,000. Aaron quotes after a proper site visit and heat-load calc.
Often yes, if the unit is sized correctly. A 7kW or 8kW high-wall split positioned thoughtfully handles a typical Cornubia open-plan kitchen, dining and family room (40–50m²). For really large open-plans with double-height voids we sometimes recommend two 5kW units instead — better airflow distribution and built-in redundancy.
Depends on how the old ducted was zoned and what condition the ducts are in. If the original ducting is over 15 years old, leaking, or the head unit is dying, multi-head splits often work out cheaper and give better individual room control. Aaron looks at both options during the quote and tells you straight which makes more sense for your home.
Plan on 1–2 days for a typical 4-head Cornubia install. Day one is usually pipe runs through the roof cavity and outdoor unit placement, day two is indoor head mounting, electrical and commissioning. We work cleanly and protect floors and furnishings as we go.
Indoor heads are very quiet — modern Daikin and Mitsubishi heads run at 19–25dB on low fan, quieter than a fridge. The outdoor unit on a 5-head system is louder than a single split's outdoor unit, which is why placement matters. We mount it where it doesn't sit under a bedroom window or against a neighbour's boundary.
Need a Split System Installed in Cornubia?
Call Aaron or book online — ARCtick certified, fully licensed, based 15 minutes from Cornubia.