R22 Refrigerant Phase-Out: What Modbury & Tea Tree Gully Owners with Pre-2010 Ducted Need to Know
If you bought your home in Modbury or Tea Tree Gully between 1995 and 2010 with the ducted aircon already installed, there’s a strong chance the system runs R22 refrigerant — and 2026 is the year the maths flips firmly toward replacement. R22 wholesale price has climbed roughly 8x since 2018. A regas job that cost $400 then now lands $1,400-$2,200 for a typical 14kW ducted system. The leak that needed sealing this summer will need sealing again next summer, and the R22 to refill it will be more expensive each year through the rest of the phase-out window.
This article walks through the Australian phase-out timeline, why R22 prices keep climbing, when “drop-in replacement” refrigerants are worth considering versus when they’re a waste of money, and the specific Modbury / Tea Tree Gully retrofit market — 1980s housing stock with R22 systems hitting end-of-life across the same decade.
R22 in 60 seconds — the refrigerant in your pre-2010 ducted system
R22 is hydrochlorofluorocarbon refrigerant (HCFC-22), in mainstream use across Australian residential and light-commercial aircon from the 1970s through the late 2000s. It works well, it’s safe, and the systems built around it ran reliably for 15-20 years. The problem isn’t R22’s performance; it’s its ozone-depletion potential. R22 is one of the refrigerants targeted by the Montreal Protocol and the Australian Ozone Protection and Synthetic Greenhouse Gas Management Act 1989.
For Australian aircon owners, R22 was used in:
- Almost all ducted reverse-cycle systems installed before 2010
- Many split-system installs before about 2007 (R410A took over from there)
- Some commercial cool-rooms and chillers still in service today
- Heat-pump hot-water systems of the era
If your ducted system is on R22, the rating plate on the outdoor condenser shows it. Look for “Refrigerant: R22” or “HCFC-22”. The federal regulator’s reference page is at the Department of Climate Change, Energy, the Environment and Water — refrigerants and ozone.
The Australian phase-out timeline — what 2026 looks like
The Australian phase-out has run on a defined schedule:
| Year | Milestone |
|---|---|
| 1996 | New R22 production cap introduced |
| 2010 | New R22 banned in domestic split systems |
| 2015 | Major reductions in R22 import quota |
| 2020 | New R22 imports banned outright |
| 2026 | Only recovered/recycled R22 legally available for service |
| 2030 | Service of existing R22 systems still legal but supply effectively dried up |
The 2020 import ban is the inflection point that explains current pricing. Since 2020, the only legal R22 in Australia is what’s recovered from decommissioned systems, reprocessed, and resold. The supply curve is one-way down. The demand curve from the installed base of pre-2010 systems is still substantial, especially across the older Adelaide housing stock in the northern suburbs and in Modbury and Tea Tree Gully where the 1980s and 1990s home builds correlate with the era’s R22 ducted installs.
Why R22 prices are 8x what they were in 2018
The price climb has been steep. Tracking wholesale R22 prices through ARC-licensed refrigeration suppliers:
| Year | Wholesale R22 (per kg) |
|---|---|
| 2018 | $48-$65 |
| 2020 | $95-$130 |
| 2022 | $180-$260 |
| 2024 | $320-$420 |
| 2026 | $380-$520 |
A typical 14kW ducted system holds 4-6kg of R22 charge. A full recharge after a leak repair therefore costs the installer $1,500-$3,000 in refrigerant alone, before labour, before leak-trace work, before recover-and-vacuum costs. The retail regas-job pricing reflects that:
| Era | Retail regas cost (14kW ducted) |
|---|---|
| 2018 | $380-$520 |
| 2026 | $1,400-$2,200 |
The trade publication AIRAH covers the phase-out economics in detail through AIRAH’s ecolibrium magazine refrigerant coverage — the industry view on the timeline matches the wholesale data.
”Drop-in replacements” (R407C, R422D) — when they work and when they fail
For owners staring at a $1,800 regas quote, “drop-in” alternative refrigerants come up in conversation. The honest picture:
R407C
- Works mechanically in many R22 systems with a thorough flush of mineral oil and replacement with polyolester (POE) oil
- Loses 8-12% efficiency vs original R22 charge
- Voids most manufacturer warranties if any remain
- Refrigerant cost roughly 60-75% of current R22
- Honest verdict: acceptable on a 6-9 year old unit with otherwise-healthy components. Rarely the right call on 12+ year systems.
R422D
- Works mechanically without oil change in many R22 systems
- Loses 5-10% capacity vs original R22
- Voids manufacturer warranties typically
- Refrigerant cost moderate
- Honest verdict: the closer-to-true-drop-in option, but performance penalty and warranty implications still apply
Why drop-ins rarely win the maths on older units
The honest framing is that drop-in refrigerants extend the life of the existing system by 2-4 years on average, at a cost of $1,200-$1,600 for the conversion. A 12-year-old ducted system on a drop-in refrigerant typically faces compressor or evaporator-coil failure inside 3 years anyway, at which point you’re back at the replacement decision but with a $1,400 sunk cost in the conversion. The 50%-rule analysis in repair or replace? when your old Adelaide aircon is past saving walks through the broader decision logic.
The Modbury / Tea Tree Gully retrofit market — 1980s housing stock with R22 systems
A specific concentration of pre-2010 R22 ducted exists across the Modbury and Tea Tree Gully postcode bands. The reason is housing-stock age. The 1970s-1990s build-out of the area put a generation of brick-veneer family homes onto the market, the bulk of which had ducted reverse-cycle aircon retrofitted between 1995 and 2008 — squarely in the R22 era.
Twenty-five years on, those systems are now 18-30 years old. The compressors are at end-of-life, the line-set joints are showing pinhole leaks, and the cooling capacity has degraded. The installer call-out volume in Modbury and TTG for “old ducted, won’t cool, needs regas” runs heavily through summer. For most of those calls, the honest service report is the same: the system is past saving on the maths.
The retrofit demographics are predictable:
- Original owners, now retired, on fixed income, considering whether to sink another $1,800 into a system that may not last another summer
- Second-generation owners who bought the house in the 2000s with the ducted system included, now facing the same call
- Investors with rental properties weighing repair vs replace against tax-deduction depreciation schedules (covered in aircon finance & payment plans)
For all three, the 2026 maths is firmer than 2020’s was. The cost of keeping the R22 system limping is climbing. The cost of replacing has held roughly flat (with some inflation, offset by rebate programs). The crossover point is now firmly in favour of replacement for any system over 12 years old.
Cost: top up R22 once more vs full system replacement (the math)
Working through a real Modbury example from autumn 2026:
System: 14kW Daikin ducted reverse-cycle, installed 2007. R22 charge. 19 years old. Two refrigerant top-ups in the last four summers. Cooling output noticeably down. Energy bill noticeably up.
Option A: R22 top-up
- Leak trace and partial regas: $1,800
- Likelihood it lasts to next summer: ~60%
- Likelihood another top-up needed within 2 years: ~80%
- Two-year cost projection: $1,800 now + $1,900 likely = $3,700
- Three-year cost projection: $1,800 + $1,900 + $2,100 = $5,800
- Outcome at year 3: the 22-year-old system probably needs replacing anyway
Option B: Drop-in conversion to R422D
- Conversion + regas: $2,400
- Loses 8% capacity (the system was already undersized for 41°C days)
- Voids manufacturer warranty (none left anyway at year 19)
- Three-year cost projection: $2,400, but compressor failure within 3 years has ~40% probability — adds $1,800-$3,500 cost if it happens
Option C: Full ducted reverse-cycle replacement
- 14kW Daikin Premium Inverter ducted, fitted, with STC rebate: $11,500
- Energy efficiency gain: ~30-40% running-cost reduction = ~$420/year saving = ~$5,000 over 12-year unit life
- STC rebate at quote: $620-$880 (already deducted from $11,500)
- Genuine running-cost reduction visible from month 1
The three-year total cost difference between Option A and Option C is roughly $5,700. Over the 12-year life of the new unit — including running-cost savings — Option C becomes substantially cheaper. The decision tilts further toward replacement once the comfort gap (a 22-year-old system at year-end vs a new 5-star inverter) is included.
The same heat-pump efficiency logic that drives this aircon replacement decision applies directly to pool heating decisions, where the move from gas heating to a modern heat pump follows the same maths — covered at Pool and Spa Quotes’ pool heating cost comparison.
STC eligibility on replacement — what catching the rebate adds back
The federal Small-scale Technology Certificate (STC) scheme applies to the new system, irrespective of what’s being replaced. For a 14kW ducted reverse-cycle replacing an old R22 system in 2026:
- Eligible STCs: ~10-12 certificates depending on energy-efficiency rating
- 2026 STC value: roughly $36-$45 per certificate
- Quote-stage discount: $400-$540
For premium high-efficiency models, the STC count is slightly higher and the rebate lands $600-$880. The Clean Energy Regulator’s STC calculator gives a precise number once you know the model.
State-specific rebates layer on top. The South Australian Government Department for Energy and Mining publishes any current state-level rebate schemes; in 2026, eligibility centres on income-tested replacement-of-old-system programs. Full picture in SA rebates for energy-efficient aircon.
Sample 5-step plan: from “it’s leaking again” to a new R32 ducted system
For a Modbury or TTG owner staring at a third-summer R22 leak, the practical sequence:
Step 1: Confirm the diagnosis (week 1)
Have an ARC-licensed technician confirm the leak location and the system’s R22 status. Get the diagnosis in writing. The technician’s report becomes the supporting documentation for any depreciation or insurance angle.
Step 2: Get a written replacement quote (week 1-2)
Get a written Adelaide ducted air conditioning replacement quote. Specify the existing system spec, the leak history, and the R22 phase-out as the trigger. A written, line-itemed quote gives you the genuine 2026 replacement market read.
Step 3: Check the quote spells out every line item (week 2)
The quote should specify: equipment model, refrigerant type (R32 in 2026), capacity, zone count, line-set length, STC rebate amount, install date, warranty terms (manufacturer + workmanship). It’s easy to sanity-check when the spec is itemised. The full guidance on quote interpretation is in how much does air conditioning installation cost in Adelaide.
Step 4: Lock the install in the autumn-pricing window (week 3)
Schedule the install for May or August (off-season pricing — see off-season install discounts). 15-20% discount, faster lead-time, calmer workmanship.
Step 5: Confirm refrigerant disposal handling (week 3)
Federal Ozone Protection law requires the installer to recover and properly dispose of the old R22. Confirm this is in writing on the quote. The recovery is non-negotiable; reputable installers include it as standard. The full R32 vs R410A picture for the new system’s refrigerant choice is in R32 vs R410A: what refrigerant is in your new aircon once it’s published.
Frequently asked questions
Is R22 still legal in Australia in 2026?
Existing R22 systems can still be operated and serviced legally — the phase-out applies to new R22 imports, not to in-service systems. But import bans since 2020 mean the only R22 available is recovered/recycled stock, which is why prices have climbed roughly 8x since 2018. Federal regulator details are at the Department of Climate Change, Energy, the Environment and Water.
Why is regassing my R22 system costing so much more now?
Three reasons. R22 is no longer imported, so supply is recovered/recycled stock only. The volume in the market is shrinking each year. And demand still exists from the installed base of pre-2010 systems. The result is that a regas job that cost $400 in 2018 now runs $1,400-$2,200 for a typical 14kW ducted system.
Can I just convert my old system to R32?
Not directly. R32 runs at higher pressure than R22 and uses different oil. Converting requires replacing the compressor, evaporator coil, condenser, and line set — which is essentially a full system replacement at that point. The honest answer is that R22-to-R32 ‘conversion’ is rarely cheaper than replacement.
Are drop-in replacement refrigerants any good?
R407C and R422D work mechanically in some R22 systems but typically lose 8-15% efficiency, often void any remaining manufacturer warranty, and are only a stopgap — they don’t address the underlying age of the system. For a 12+ year-old unit, the drop-in regas is rarely cheaper long-term than just replacing.
Will I get an STC rebate for replacing my old R22 ducted?
Yes — the federal Small-scale Technology Certificate scheme applies to the new replacement system, regardless of what’s being replaced. For a typical 14kW reverse-cycle replacement in 2026 the STC rebate lands $400-$900 at quote stage. The rebate is automatic; the installer applies it as a discount on the quote.
How do I know if my ducted system is R22?
Check the rating plate on the outdoor condenser — refrigerant type is listed as R22, R-22, or HCFC-22. If the system was installed before late 2010 and you can’t find the rating plate, the system is most likely R22. Any ARC-licensed technician can confirm in 2 minutes during a service call.
Ready for a written, line-itemed Adelaide R22 replacement quote?
Submit the quote form — we’ll be in touch within 24–48 hours, providing a full R22-to-R32 replacement quote with STC rebate applied, autumn-pricing where the calendar suits, and proper R22 recovery and disposal included.