Aircon Installation in Modbury, SA — R22 Replacement Specialists
Modbury, postcode 5092 in the City of Tea Tree Gully, is the centre of metro Adelaide’s R22-phase-out replacement market. The 1970s-1990s housing stock that dominates Modbury, Modbury Heights, Tea Tree Gully and Hope Valley got its first ducted aircon between 1995 and 2010 — almost all of it on R22 refrigerant. R22 was banned for new equipment in 2010 and supply has been winding down since; current top-up costs are 3–5x equivalent R32, and most of those original systems are now hitting end-of-life with refrigerant-related faults that aren’t economical to fix. Aircon installation in Modbury is dominated by full-system replacements — old R22 ducted out, new R32 inverter ducted in. We’re an R22-replacement-experienced Modbury aircon installer, and we’ll get back to you within 24–48 hours.
What changes about a Modbury install
R22 phase-out drives the replacement market. R22 (Freon) was the dominant refrigerant in residential ducted systems through the 1990s and 2000s. The Montreal Protocol stages — banned for new equipment 2010, manufacturing phase-out 2020, full ban on import 2030 — have pushed R22 supply price up 3–5x against R32. For any 15+ year old Modbury ducted system with a refrigerant fault, replacement is now uniformly the better economic call than repair.
Tea Tree Gully catchment houses are template-able. Modbury and Tea Tree Gully are dominated by 1970s-1990s brick veneer 3-4 bedroom homes on 600-700m² blocks — a relatively standard format that makes ducted retrofits clean and predictable. A standard Modbury ducted replacement runs 2 days on-site, with the existing ducting often reusable (subject to inspection).
Modern Colorbond rooflines. Newer Modbury infill (post-2000) typically has Colorbond roofs with deep voids — friendly for ducted indoor unit placement and supply ducting routing. Older 1970s-1980s tiled-roof homes have shallower voids and sometimes need bulkhead supply.
Inland heat-load. Modbury sits inland enough to share Salisbury’s heat-load profile — though slightly less extreme. Summer maximums sit 4–5°C above the CBD baseline; ducted systems should be sized 15% above standard.
Typical Modbury install patterns
| Property type | Common install | Indicative price |
|---|---|---|
| 1980s ducted replacement (3-bed) | 12kW R32 ducted, 4 zones (existing ducting) | $7,500–$10,500 |
| 1990s ducted replacement (4-bed) | 14kW R32 ducted, 4 zones | $9,500–$13,500 |
| Full ducted retrofit (no existing ducting) | 14kW R32 ducted with new ducting | $11,500–$14,500 |
| Modbury Heights 4-bed | 14–16kW ducted with cold-climate spec | $11,500–$15,500 |
| Tea Tree Gully modern | 14kW ducted, frame-stage clean | $9,500–$13,500 |
| Single-head split (one room) | 5–7kW R32 inverter | $2,400–$3,800 |
Brands matched to Modbury
The Modbury panel routes to installers carrying:
- Daikin Premium Inverter Ducted — strong replacement market presence
- Mitsubishi Bronte — competitive ducted alternative
- Fujitsu Slimline Ducted — mid-range value
- Daikin Cora — single-head split replacement workhorse
What R22 replacement actually involves
A typical R22 replacement on an existing Modbury ducted system:
- Assessment — confirm whether existing ducting is reusable (most are; some need replacement if rodent-damaged or dust-collapsed). Confirm zone-controller compatibility (most need replacement — old wired controllers don’t talk to new inverter systems).
- Refrigerant recovery — the existing R22 charge is recovered to mandatory standards (Refrigerant Reclaim Australia certification required) and disposed of properly. This is non-optional and an ARC licence-holding installer must do it.
- Indoor unit replacement — the new R32 indoor unit and the new condensate drain go into the existing roof void location (or relocated if the old position was suboptimal).
- Outdoor unit replacement — the new compressor goes on the existing pad or a fresh pad if the old one was undersized.
- Refrigerant lines — new line set runs from indoor to outdoor unit (R22 line sets aren’t reused for R32 — they need new oil-rated tubing).
- Commissioning — vacuum, refrigerant charge, performance test, zone controller commissioning, paperwork.
Total time: typically 2 days on-site. Cost runs 70-85% of a clean ducted retrofit because ducting reuse and existing electrical infrastructure save labour.
Suburbs we also service near Modbury
- Salisbury — 8km west, equivalent inland heat-load
- Stirling — 12km south, Hills cold-climate
- Tea Tree Gully, Modbury Heights, Hope Valley, St Agnes, Banksia Park — full coverage as Modbury catchment
- Golden Grove, Greenwith, Wynn Vale — northern growth corridor in northern suburbs hub
Frequently asked questions
How much does R22 replacement cost in Modbury? A typical 4-zone ducted replacement (reusing existing ducting) on a 4-bedroom Modbury home runs $9,500–$13,500 supplied and fitted. Full retrofits with new ducting sit $11,500–$14,500.
Should I just top up my R22 system? Almost never. R22 top-up cost is now 3–5x R32 equivalent, and the system is approaching end-of-life regardless. A $2,500 R22 top-up on a 20-year-old unit is a temporary fix; the same $2,500 toward replacement is the better call.
Can the existing ducting be reused? Usually yes — most 1990s-2000s ducting is structurally fine, just needs visual inspection (rodent damage, dust collapse, insulation degradation). Where the ducting is undersized for the new compressor capacity, partial replacement is cheaper than full replacement.
What about R410A systems? R410A is the next-generation refrigerant after R22 and is still in use, though being progressively replaced by R32 (lower global warming potential). R410A systems aren’t urgently due for replacement — but if a refrigerant-related fault appears on an R410A unit, the same maths often points to replacement.
Is reverse-cycle a sensible upgrade from old gas-only ducted? Yes — particularly in Modbury where summer cooling demand is high. Older Modbury homes sometimes have ducted gas-only heating and a separate evap. Replacing both with reverse-cycle ducted simplifies the system and usually reduces total running cost. The reverse-cycle vs evaporative article covers the call.
How quickly can you install in Modbury? A R22 replacement is typically 1–2 weeks from quote to install in shoulder season, 2–4 weeks in peak season as our schedule gets stretched.
Ready for a written, line-itemed Modbury aircon quote?
Submit the quote form — we’ll be in touch within 24–48 hours.
