Metal roller doors
They soak up sun and radiate heat into the space.
Phillip Bay is a small bayside pocket next to La Perouse, with family homes close to the water. Garages here often become home gyms, workshops or places to rinse the boat gear and fix the surfboards, and they get very hot under a metal door.
Updated October 2026
Air conditioning in Phillip Bay garages and workshops faces a big heat load. Metal roller doors, little insulation and concrete floors that hold the day's heat make these spaces hard to cool, and a gym session or power tools add more. A correctly sized split, positioned to push air across the whole space, makes them usable through summer. Alpha & Omega has cooled all kinds of Sydney rooms since 1989.
Three things work against you.
They soak up sun and radiate heat into the space.
Many garage roofs and walls were never insulated.
Exercise, machines and power tools all add load.
How the space is used changes the setup.
| Use | Typical setup | Notes |
|---|---|---|
| Home gym | A higher-capacity split | Strong airflow for workouts Splits → |
| Workshop | A split with easy-clean filters | Dust and fumes mean more frequent cleaning |
| Garage turned rumpus or studio | A split or a zone off a multi-split | Comfort for longer stays Multi-split → |
For garages, gyms, workshops and homes.
Sized for hot, uninsulated spaces.
Splits →Easy-clean filters for dusty work.
Workshop splits →For the main house.
Ducted →Garage plus bedrooms on one outdoor unit.
Multi-split →Salt and dust cleaned out.
Servicing →Faults fixed promptly.
Repairs →Yes. We size the system for the extra heat from the door and suggest insulation where practical.
Usually more than a bedroom of the same size, because of the door, roof and exercise heat. We size it on site.
It clogs filters faster, so clean them regularly and book professional cleans more often.
Insulating the ceiling or roller door can reduce the load a lot and lower running costs.
Yes, with a multi-split, if the layout and capacity suit.
ARC licence AU54289 and NSW contractor licence 329810C apply to all our work here.
Around La Perouse and Little Bay.
Book a licensed technician to size a system for your garage or workshop. The fixed price is agreed before any work.
*Call-out, travel and quote visit fees can vary depending on the job and where you are. We'll confirm any costs with you when you book, before any work starts.
Licensed local technicians and an Authorised Daikin Specialist Dealer across Sydney, backed by a lifetime workmanship warranty.
Air Conditioning Sutherland Shire
Air Conditioning Eastern Suburbs
Direct Line: 1300 156 466
Licence: ARC Lic #AU54289 | NSW Contractor #329810C
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