Air Conditioner Regas Cost Brisbane (2026) — From $250
Installer’s price guide to full air conditioner regas across Brisbane — what the difference is between a regas and a gas top-up, when to do which, and the cheap-job traps that mean you’re paying twice.
Quick answer: A full regas (recover, evacuate, refill) from $250 inc GST for a standard split system. A gas top-up (just add refrigerant) from $180. If your system is losing gas you usually need a leak fix first — otherwise the new refrigerant leaks straight back out.
Brisbane regas pricing by system type (2026)
| System type | Starting from (inc GST) | Includes |
|---|---|---|
| Split system (2.5–6kW) | From $250 | Recover, evacuate, refill, pressure test |
| Split system (7kW+) | From $290 | As above, larger charge volume |
| Multi-head split | From $380 | Whole multi-head circuit including all indoor heads |
| Ducted system | From $450 | Recover, evacuate, refill, full pressure test |
| Commercial / VRF / R22 retrofit | Quote on site | R22 phased out — retrofit to R410A typically |
Includes refrigerant supply (R32 or R410A as required), recovery, vacuum dehydration, refill to manufacturer spec, pressure and leak test. Final price depends on system size, refrigerant type, and any underlying leak repair.
Regas vs gas top-up — what’s the difference?
Top-up just adds refrigerant to bring the charge back up to spec. Faster and cheaper (from $180) — suitable when the system is slightly low but not empty, and you can’t justify a full evacuation.
Regas (full) recovers all existing refrigerant, vacuums and dehydrates the system, then refills with a fresh measured charge. More expensive but more reliable — resets the system to factory charge and removes any moisture or contamination.
When to do which:
- System slightly under-charged but no symptoms — top-up (see gas top-up)
- System empty or near-empty — full regas after leak fix
- Moisture in the system (after a poor previous service) — full regas
- Refrigerant type change (R22 to R410A) — full regas + retrofit
- Suspected contamination (mineral oil mixed with POE oil from a previous repair) — full regas
If you’ve lost gas, you probably have a leak
Sealed air conditioning systems should not lose refrigerant. A small amount of permeation through the pipe walls is normal — about 1% per year. Anything more than that is a leak somewhere in the system.
Just refilling without finding and fixing the leak means you’ll be back here in 6–12 months. That’s expensive and pointless. A proper regas includes:
- Recovery of existing refrigerant to a cylinder for safe disposal or reuse
- Leak detection — electronic sniffer, soap bubble test, or UV-dye if needed
- Leak repair — flare nut re-tighten, replace Schrader valve, braze pipe, or replace component
- Pressure test with dry nitrogen at 1.5x working pressure for 30+ minutes
- Evacuation via vacuum pump to 500 microns or lower
- Refill with measured weight of fresh refrigerant per manufacturer spec
- Run test and superheat/subcool check to verify correct charge
If your installer skips the leak detection and goes straight to refill, you’re not getting a regas — you’re getting a temporary top-up. See refrigerant leak repair for the full leak diagnostic and fix scope.
Signs you need a regas
- Reduced cooling — takes longer to cool the room, never reaches setpoint on hot days
- Ice forming on the indoor coil or the refrigerant pipes outside
- Hissing sound from the indoor or outdoor unit (gas escaping under pressure)
- Higher power bills with the same usage pattern
- Visible oil residue at flare nuts on the outdoor unit (refrigerant carries compressor oil — oil at a joint means gas leak)
- Error code indicating low-side pressure or refrigerant fault (Daikin U0, Mitsubishi P5, Panasonic H97, Fujitsu 12:01)
R22, R410A, R32 — which does your system use?
R32 — current standard for all 2018+ split systems. Lower global-warming potential, slightly higher operating pressure. From $40/kg wholesale.
R410A — transitional refrigerant, used in most splits 2003–2018. Higher operating pressure than R22. From $50/kg wholesale.
R22 — pre-2003 systems. Being phased out globally; supply is limited and getting expensive. R22 systems should be retrofitted to R410A on next major service, or replaced. From $120/kg if you can find it.
The refrigerant type is listed on the data plate of the outdoor unit. If you don’t know, ask at quote stage — it affects cost and approach.
Cheap-regas traps to avoid
- No leak test before refill. Saves the installer 30 minutes; costs you a return visit in 6 months.
- No vacuum dehydration. Just venting the old gas to atmosphere and refilling leaves moisture and air in the system. Acidic compounds form and eat the compressor.
- Topping up with the wrong refrigerant. Adding R410A to a R22 system kills the compressor. Adding R32 to an R410A system creates a mixture that can’t be recovered cleanly.
- No measured charge. Eyeballing the charge by sight-glass or just “until it sounds right” leaves the system overcharged or undercharged. Either reduces efficiency and shortens compressor life.
- No ARC licence. Refrigerant work in Australia legally requires an ARCtick licence. Unlicensed work is a fine for the operator and uninsurable damage if it goes wrong.
Common questions
How much does it cost to regas an air conditioner in Brisbane?
From $250 inc GST for a standard split system (2.5–6kW). From $380 for multi-head. From $450 ducted. Commercial and R22 retrofits quoted on site. Includes recovery, leak test, evacuation, refill, and pressure test.
Regas or top-up — which do I need?
Top-up if the system is slightly under-charged but still cooling adequately. Full regas if the system is near-empty, if there’s been a leak fix, if moisture or contamination is suspected, or if you’re changing refrigerant type.
Why does my air conditioner keep losing gas?
It has a leak. Sealed AC systems should not lose refrigerant beyond ~1% per year of normal permeation. Common leak points: flare nut joints (outdoor unit), Schrader service valves, evaporator/condenser coil pinholes, brazed joints that have flexed. Leak fix from $300.
How long does an AC regas take?
About 2 hours for a standard split — recovery, leak test, evacuation, refill, and run-test. Longer if leak repair is required.
Can my old R22 system be refilled?
Yes, but R22 supply is limited and getting expensive (from $120/kg). Most R22 systems are 15+ years old at this point — the smarter spend is usually retrofit to R410A or replacement. Quote on site.
Is regas covered under warranty?
No — refrigerant loss is treated as a maintenance item, not a manufacturing defect. The leak that caused it might be covered under workmanship warranty if the install was poor.
Do you need an ARC licence to regas?
Yes — refrigerant handling in Australia requires an ARCtick licence. AH Aircon is ARCtick licensed (AU54321). Unlicensed regas work is illegal and uninsured.
AH Air Conditioning · 63 Britannia Ave, Morningside QLD 4170 · ARCtick AU54321 · 20+ years across Brisbane.