Replace Your Old Aircon: Costs, Rules & Tips (Australia 2026)
Published 2026-05-17 · 8 min read
Replacing an old split-system with a new one and taking the old unit away typically costs $1,300–$4,500 (supply, install + disposal, 2026). Learn the real inclusions, licensing, apartment rules, and how to avoid surprise extras across Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra and Darwin.
$1,300 to $4,500 for a split-system replacement (supply, install + disposal, 2026)
A like-for-like split-system swap with removal and legal refrigerant recovery typically costs $1,300–$4,500 GST‑incl. in 2026. Install‑only is $600–$1,200 plus $120–$250 to remove and recycle the old unit. Ducted replacements start around $6,500 when reusing ducts, rising with new ductwork, zoning, difficult access or after‑hours work.
Install-only: $600–$1,200; old unit removal $120–$250
Use ARCtick and licensed electricians; get compliance docs
Apartments may need strata approval, crane/lift bookings
After-hours surcharges 20–50%; public holidays up to 100%
## What This Article Answers
If your existing air conditioner is noisy, leaking, inefficient, or dead, this guide explains how to swap it out for a new unit and have the old one removed from site—legally and safely. You’ll see typical Australian costs (GST-inclusive, 2026), licensing rules (ARCtick and electrical), apartment/strata constraints, metro vs regional variations, after-hours surcharges, and what’s usually included in a “replace and remove” quote. I’ve managed like-for-like split swaps in Brunswick East and Sydney’s inner-west, plus ducted replacements in Brisbane northside—this is the practical detail I wish I had on day one.
## The Short Answer
To replace an old split-system with a new one and remove the old unit, budget **$1,300–$4,500** for a like-for-like supply, install and disposal in 2026 (GST incl.). Install-only with legal refrigerant recovery and disposal usually lands **$600–$1,200**, plus **$120–$250** to remove and recycle the old system. Ducted replacements are a bigger job: expect **$6,500–$14,000** if reusing existing ducts, more with full ductwork renewal and zoning. Extras include wall brackets, condensate pumps, new circuits, core drilling and crane lifts.
## Background and Context
### Common Replacement Scenarios
- Like-for-like split-system, back-to-back: typically half-day changeover in Sydney inner-west terraces or Melbourne south-east townhouses.
- Side exit or high-level runs: more wall work, longer pipe runs, sometimes a condensate pump.
- Apartment swaps in Brisbane CBD or Adelaide city-fringe: body corporate approvals, balcony brackets, occasional crane or rope access.
- Ducted system changeouts in Perth northern suburbs: reusing ducts if they’re in good condition, or scheduling a full duct refresh.
### Supply vs Install-Only
- Supply + install: Your tradie provides the new unit, materials, commissioning, compliance documentation, and disposes of the old one. Often smoother warranty handling through a single point of contact.
- Install-only: You buy the unit; the tradie installs, commissions, and removes the old one if requested. Expect more variability in accessories included (isolation switch, brackets, drain, capping). Clarify these on the quote.
### Typical Timeframes
- Split-system like-for-like: **3–6 hours** for a competent two-person crew, add time for core drilling or long line sets.
- Multi-split (2–3 heads): **1 day**; complex runs can spill into a second visit.
- Ducted replacement: **1–2 days** reusing ducts; **2–4 days** if ducts/zoning are renewed and ceilings are tight.
All prices and durations in this article are **GST-inclusive (2026)** and reflect metro work in suburbs such as Newtown (Sydney), Carnegie (Melbourne), Chermside (Brisbane), Joondalup (Perth), Prospect (Adelaide), Sandy Bay (Hobart), Belconnen (Canberra), and Nightcliff (Darwin), with notes for regional work.
## What to Watch Out For in Australia
### Licensing, Compliance and Refrigerant Laws
- Refrigerant handling must be done by an ARCtick-licensed technician or business. It’s illegal to vent refrigerant; proper recovery and disposal is required. Ask for ARCtick details and check via the [licence checker](/licence-checker).
- Electrical work (new circuit, isolator, wiring) must be performed by a licensed electrician in every state. In NSW, air conditioning businesses offering installation generally require a Fair Trading Contractor Licence; electricians issue compliance documentation (e.g., CCEW in NSW, CES in VIC).
- You should receive paperwork for commissioning, electrical compliance where applicable, and a tax invoice showing ABN.
### Apartments, Strata and Access
- Strata approvals: Many body corporates in Sydney CBD or Southbank (Melbourne) require acoustic specs, condenser location drawings, and colour-matched capping. Book approvals before ordering the unit.
- Access constraints: Lifts, loading docks, and parking windows can add labour. Crane or rope access in tight streets (e.g., inner-Brisbane) adds significant cost; plan it early.
- Working hours: Noise restrictions often limit drilling to weekdays, 8am–5pm, with weekend limitations and public-holiday bans.
### Site and Weather Factors
- Coastal corrosion (Perth/Adelaide seaside): choose corrosion-protected coils and stainless fixings. You may need wall brackets rather than slab mounts in flood-prone or sandy zones.
- Heat and humidity (Darwin): ensure correct capacity and dehumidification; poor sizing leads to short cycling and mould.
- Bushfire or BAL areas: confirm outdoor clearances and ember protection strategies with your installer.
## Practical Recommendations
### How to Scope the Job Right
- Photograph existing indoor and outdoor units, the isolator switch, drain, capping, and breaker panel; share these with your tradie.
- Confirm if the replacement is back-to-back or needs long pipe runs, core drilling, or a condensate pump.
- Decide on mounting: slab on ground, wall brackets, or roof frame; consider neighbour noise and service clearances.
- For apartments, secure written strata approval and book lift/protection mats in advance.
- Ask whether existing copper can be reused; many pros prefer new line sets for warranty reasons.
Useful pages: [air conditioning services](/services/air-conditioning), [licensed electricians](/trades/electrician), and quick [quote comparisons](/quote-compare).
### Spec and Brand Considerations
- Size by room heat load, not guesswork. A 2.5 kW split suits a small bedroom; 5–7 kW handles open-plan living in many homes. Oversizing can cause noise and humidity issues.
- Look for Wi‑Fi control, quiet indoor sound levels (<40 dB on low), corrosion protection if coastal, and a solid warranty (commonly 5 years).
- Ensure the outdoor has service access and compliant clearances; avoid hot western walls when you can.
### Getting and Comparing Quotes
- Ask for a fixed price that separates: supply, installation labour, electrical items, wall brackets or slab, line set replacement, core drilling, condensate pump, capping, removal/disposal of old unit, and any crane/parking fees.
- Confirm inclusions in writing: commissioning, refrigerant recovery certificate, electrical compliance certificate, and rubbished site left tidy.
- Plan timing: after-hours work (after 6pm) in Sydney or Melbourne can add **20–50%**; public holidays up to **50–100%**. For emergency swaps, start with [after-hours help](/emergency) and lock in daytime completion next business day where possible.
- Use a simple budget range in a [planner](/budget-planner), then tighten once you’ve shortlisted 2–3 quotes.
## Costs You Should Expect
Below are typical GST-inclusive ranges for 2026. Metro prices (Sydney/Melbourne/Brisbane/Perth/Adelaide/Canberra/Hobart/Darwin) tend to sit mid-to-high in the ranges; regional work may add travel.
| Item | Typical Price (AUD, 2026) | Notes |
|---|---|---|
| Split-system replace (2.0–2.5 kW), supply+install+disposal | $1,300–$2,400 | Back-to-back, standard wall, new line set, commissioning |
| Split-system replace (3.5–5.0 kW), supply+install+disposal | $1,800–$3,300 | Living rooms; add for long runs or high walls |
| Split-system replace (6–7.1 kW), supply+install+disposal | $2,400–$4,500 | Larger living; heavier brackets, larger cable |
| Install-only (you supply unit), like-for-like | $600–$1,200 | Labour + sundries; add disposal fee if not included |
| Old split removal + legal refrigerant recovery | $120–$250 | Includes degas, recycling, site clean |
| Wall brackets (galv./stainless) | $120–$220 | Supplied and fitted |
| Concrete slab/pads | $120–$240 | Small precast pad + levelling |
| New copper line set and insulation | $150–$350 | Varies by length and size |
| Core drilling (single brick/block) | $80–$150 | Extra for double brick/concrete |
| Condensate pump (supplied & fitted) | $200–$400 | For long/high drain runs |
| Weatherproof isolator switch | $120–$220 | Often mandatory near outdoor unit |
| New dedicated circuit to switchboard | $250–$600 | Electrician time + materials |
| UV/weather capping (2–3m) | $80–$160 | Cosmetic + protection |
| Multi-split replace (2–3 heads) | $3,500–$8,000 | Supply, install, disposal |
| Ducted system replacement (reuse ducts) | $6,500–$14,000 | 3–5 bed homes; add zoning |
| Full ducted renewal (units + new ducts/zoning) | $9,500–$18,000 | Access, zoning, plenums |
| Crane or rope access (where required) | $400–$900 | Strongly site-dependent |
| Call-out/travel (metro) | $80–$160 | Often waived if proceeding |
| Regional travel loading | $1.50–$2.20/km | Plus time at **$90–$140/hr** |
| After-hours surcharge (post‑6pm) | +20–50% | Public holidays +50–100% |
Price drivers to budget for:
- Capacity and efficiency rating (higher star ratings cost more upfront).
- Access: ladders/scaffolds, apartments with strict loading docks, no parking.
- Reusing vs replacing line sets; warranty often favours new copper.
- Electrical upgrades: old switchboards, RCD requirements, isolators.
- Coastal or cyclone-rated fixings in WA/NT; acoustic requirements in strata.
If you’re shortlisting installers, start at [air conditioning services](/services/air-conditioning) and compare 2–3 quotes via [quote compare](/quote-compare).
## Final Thoughts
Replacing an old air conditioner is more than swapping boxes: it’s licensed refrigerant recovery, compliant electrical work, clean condensate management, and smart placement for longevity and noise. For a straightforward split, I commonly see total supply-install-disposal land between **$1,300–$3,300** in Sydney inner-west or Melbourne south-east, with larger living-room systems reaching **$4,500** when access is tricky. Ducted changeouts demand a proper plan and schedule. Document inclusions, check licences, and lock in access. Post your job on TaskerAsker for free and receive quotes from local tradies
Frequently Asked Questions
How much to replace a split-system air conditioner in Australia?
Budget $1,300–$4,500 GST‑incl. in 2026 for a like‑for‑like replacement including removal and legal refrigerant recovery. Install‑only is typically $600–$1,200, while old unit removal/recycling is $120–$250. Larger 7 kW units sit at the higher end; tight access, long line runs and after‑hours work add cost.
How long does an aircon replacement take?
A straightforward split-system swap takes 3–6 hours for a two‑person crew. Multi‑splits with 2–3 heads can take a full day, and ducted replacements span 1–2 days if reusing ducts or 2–4 days with full ductwork renewal. Add time for core drilling, high walls, parking, and strata access windows.
Do I need a licensed tradie to remove and replace an air conditioner?
Yes. Refrigerant must be recovered by an ARCtick‑licensed technician, and electrical work (new circuits, isolator) must be done by a licensed electrician. In NSW, aircon businesses generally need a Fair Trading contractor licence. Always ask for compliance paperwork and check using a licence checker.
Can I reuse the existing copper pipes and cables?
Sometimes, but many installers prefer new copper line sets to protect the compressor and maintain warranty. Reusing old lines can trap contaminants. New line sets typically add $150–$350 depending on length and size. If reusing, insist on proper nitrogen purging and pressure testing before commissioning.
What does the removal and disposal fee cover?
A fair fee of $120–$250 covers safe pump‑down or recovery, degassing, transporting the unit off site, and recycling metal/plastic components. It is illegal to vent refrigerant. You should receive a tax invoice and, on request, confirmation that refrigerant was recovered by an ARCtick‑licensed business.
Are weekend or after‑hours aircon replacements more expensive?
Yes. Expect surcharges of 20–50% for work after 6pm or on Saturdays, and 50–100% on public holidays. If you can, book standard weekday hours to avoid premiums. Some tradies charge $80–$160 call‑outs in metro areas, often credited if you proceed with the job.
Do I need strata approval to replace my aircon in an apartment?
Usually. Most body corporates request unit specs, noise data, location plans, and sometimes colour‑matched capping. You may also need to book lift times and loading docks. Access can add $200–$600 in labour; crane or rope access adds $400–$900 depending on duration and permits.
Is a ducted aircon replacement worth it vs multiple splits?
For whole‑home comfort, a ducted changeout can be cost‑effective at $6,500–$14,000 reusing ducts, especially in 3–5 bed homes. Multiple splits can match capacity but may total $6,000–$12,000 for 3–4 rooms and add visual clutter outside. Consider zoning, energy ratings, and access before deciding.
What hourly rate do aircon tradies charge in Australia?
For 2026, typical metro labour is $90–$140 per hour, GST‑incl., for licensed installers/electricians. Emergency after‑hours rates run $120–$180 per hour. Many jobs are quoted per project rather than hourly; still, rates help you sense‑check line items like electrical upgrades or troubleshooting.
Will I need a new circuit or isolator for my replacement?
Often, yes. Modern installs usually require a weatherproof isolator near the outdoor unit, costing $120–$220 supplied/fitted. Older switchboards may need a dedicated circuit at $250–$600. Your installer should confirm cable size, breaker rating, and RCD compliance during the site check.
Can I do a DIY swap if the pipes already exist?
No. Handling refrigerant without an ARCtick licence is illegal, and electrical work must be done by a licensed electrician. DIY also risks manufacturer warranty. Hire a licensed technician for pump‑down/recovery, pressure testing, evacuation, and commissioning to the manufacturer’s spec.
Frequently asked questions
How much to replace a split-system air conditioner in Australia?
Budget $1,300–$4,500 GST‑incl. in 2026 for a like‑for‑like replacement including removal and legal refrigerant recovery. Install‑only is typically $600–$1,200, while old unit removal/recycling is $120–$250. Larger 7 kW units sit at the higher end; tight access, long line runs and after‑hours work add cost.
How long does an aircon replacement take?
A straightforward split-system swap takes 3–6 hours for a two‑person crew. Multi‑splits with 2–3 heads can take a full day, and ducted replacements span 1–2 days if reusing ducts or 2–4 days with full ductwork renewal. Add time for core drilling, high walls, parking, and strata access windows.
Do I need a licensed tradie to remove and replace an air conditioner?
Yes. Refrigerant must be recovered by an ARCtick‑licensed technician, and electrical work (new circuits, isolator) must be done by a licensed electrician. In NSW, aircon businesses generally need a Fair Trading contractor licence. Always ask for compliance paperwork and check using a licence checker.
Can I reuse the existing copper pipes and cables?
Sometimes, but many installers prefer new copper line sets to protect the compressor and maintain warranty. Reusing old lines can trap contaminants. New line sets typically add $150–$350 depending on length and size. If reusing, insist on proper nitrogen purging and pressure testing before commissioning.
What does the removal and disposal fee cover?
A fair fee of $120–$250 covers safe pump‑down or recovery, degassing, transporting the unit off site, and recycling metal/plastic components. It is illegal to vent refrigerant. You should receive a tax invoice and, on request, confirmation that refrigerant was recovered by an ARCtick‑licensed business.
Are weekend or after‑hours aircon replacements more expensive?
Yes. Expect surcharges of 20–50% for work after 6pm or on Saturdays, and 50–100% on public holidays. If you can, book standard weekday hours to avoid premiums. Some tradies charge $80–$160 call‑outs in metro areas, often credited if you proceed with the job.
Do I need strata approval to replace my aircon in an apartment?
Usually. Most body corporates request unit specs, noise data, location plans, and sometimes colour‑matched capping. You may also need to book lift times and loading docks. Access can add $200–$600 in labour; crane or rope access adds $400–$900 depending on duration and permits.
Is a ducted aircon replacement worth it vs multiple splits?
For whole‑home comfort, a ducted changeout can be cost‑effective at $6,500–$14,000 reusing ducts, especially in 3–5 bed homes. Multiple splits can match capacity but may total $6,000–$12,000 for 3–4 rooms and add visual clutter outside. Consider zoning, energy ratings, and access before deciding.
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