Marine Air Conditioning in Perth
The afternoon sea breeze genuinely changes the argument. A boat that gets the Fremantle Doctor from about two o’clock most summer afternoons may be fixed by ventilation alone.
Boat Air Conditioning Sizing in Perth
Perth sits in the Temperate band, which means the sizer applies a ×7 multiplier to accommodation volume. Summer seawater runs 21–23 °C, in our planning data. The figures below use a simplified climate factor; they are not manufacturer performance curves. Ask the installer to verify output at the design seawater temperature for your actual unit.
| Boat | Cooling needed in Perth | What that is |
|---|---|---|
| 32 ft | 8,500 BTU | One small self-contained unit, one zone. |
| 36 ft | 10,500 BTU | The bottom of the 14–16k band. |
| 40 ft | 13,000 BTU | The reference boat for every figure on this page. |
| 45 ft | 16,500 BTU | Two units or a two-zone split. |
Computed for a light hull with ordinary glass at a typical cabin count. A dark hull adds about 10 % and a lot of glass another 10 % — both worth applying honestly. Run your own case on the sizing calculator; these rows are that calculator with the climate fixed to Perth.
Marine Air Conditioning Installation and Running Costs in Perth
A self-contained job on a 40 ft boat, supplied and fitted, ex GST, including the seawater side and the electrical work.
$0.23 an hour at 1.28 kW and the duty cycle a closed-up boat sees. About $211 across a ninety-night summer.
That leaves 4.7 A of a 10 A marina lead, or 9.7 A of a 15 A one, for the charger, the kettle and everything else.
Berth power here: 15 A typical
Running cost is calculated at 30.5 c/kWh — the Western Australia residential reference rate, which is what a household is billed and therefore what most people can check against their own power bill. A marina berth is a different matter: some meter at a commercial rate, some at a markup, and some bundle power into the berth fee. Ask yours before budgeting on this number. Installed prices come from the national cost model; equipment is a national market and it is yard labour that moves between ports.
Local Seawater Conditions and Maintenance in Perth
Ocean water at Fremantle and Hillarys is clean and cool and fouls slowly; Swan River berths are a different and siltier story.
Usually airflow rather than seawater here — filters clog with fine coastal dust and salt.
Older marina arms on 10 A, and the summer afternoon load that comes with a 40 °C day.
The local hazard: Cool water is an advantage — a unit rated at 25 °C seawater performs at or above its label here, which is the opposite of the Queensland problem.
Heating: Occasionally useful through winter, though rarely the reason to fit a system. All twenty faults, each with a diagnostic path, are on the fault-finding pages.
Perth Marinas and Boat Locations
Concentrated around Fremantle and the northern marinas. A smaller trade than the eastern seaboard, so confirm service coverage for the brand you choose.
Finding Marine Air Conditioning Installers in Perth
Start with our marine air-conditioning provider directory, then confirm coverage of Perth, current qualifications and availability directly. Listings are sourced from the YouSail directory and are not a ranking or endorsement. The site may earn referral fees; see our editorial policy. Use the checks below to compare the actual scope of each proposal.
Ask to see the ARCtick licence. Anyone charging or recovering refrigerant in Australia needs one, and it is an offence to do that work without it. Asking is completely normal and nobody legitimate minds. The licence number can be checked with the Australian Refrigeration Council.
Ask who does the 240 V work. Fixed wiring on a vessel is licensed under AS/NZS 3004.2. A quote that neither includes it nor excludes it is the one to worry about.
Ask for the quote broken into equipment, parts and labour. Separating them is the single most useful thing you can request, and it is how you find out whether a dear quote is a hard install or an expensive yard.
Check the three lines that go missing. A dedicated through-hull and seacock, the 240 V circuit, and somewhere for the condensate to go. A quote carrying all three that costs more than one that does not is the cheaper quote.
Get the unit's location in writing. A self-contained box under the bunk you sleep in is a decision you cannot undo once the ducting is in.
Air Conditioning Enquiries for Boats in Perth
Tell us the boat, the marina and what you are trying to fix. We will tell you what it should cost here and whether the numbers above survive contact with your layout — including, sometimes, that a wind scoop and a shade cloth would fix it for a hundred dollars.
Perth Berths, Island Cruising and Cooling Power
For a Perth-based boat, discuss the difference between the home berth and trips away from it. If the intended use includes Rottnest or coastal anchorages, state how many nights must be supported without shore power and how the bank will recover. This is an electrical and itinerary question as much as a cooling-capacity question.
Ask where warranty and service support is provided in Western Australia and how parts reach the boat if it is away from its home marina. Record that answer alongside equipment comparisons instead of treating nationwide branding as local availability.
Read the planning checklistPerth Marine Air Conditioning Installation Checklist
Write down the berth, planned cruising area and months aboard before asking for a quote. A boat based in Perth may need a different design when it spends summer farther north. Tell the installer which cabins must stay comfortable with their doors shut, whether you sleep aboard at anchor, and whether heating matters in your actual itinerary.
Local planning note: Ocean water at Fremantle and Hillarys is clean and cool and fouls slowly; Swan River berths are a different and siltier story. Treat this as a reason to check the seawater path and service access, not as a diagnosis. Record the condition of the strainer and the discharge when the system is working normally; that gives a technician a baseline if performance changes.
Before booking a marina visit
- Ask the marina to confirm the supply at your specific berth. The regional indication is 15 A typical; it is not a guarantee for every outlet.
- Check contractor access, parking, working hours and whether a lift-out is needed for any new hull penetration.
- Send photographs of the proposed equipment locker, return-air route and electrical panel, plus the unit model if you already have one.
- Request written inclusions for commissioning, travel, disposal, warranty support and follow-up visits.
Questions for owners in Perth
Can I use these local prices as a fixed quote?
No. These are planning estimates for the stated reference boat. Access, equipment choice, marina charges, taxes and existing installation condition change the actual scope. Request an itemised quote after a vessel inspection.
Where can I compare service providers?
Use the provider directory to make enquiries, then confirm coverage of Perth directly. A directory entry does not establish availability, authorisation for a particular brand or suitability for your vessel.
What changes if I cruise outside Perth?
Ask for the design seawater and cabin conditions in writing. Use the destination port guides to identify different planning assumptions, then have the installer check the actual equipment performance data.
Find Help with Marine Air Conditioning
YouSail listings based in WA are shown below. A business address does not establish coverage of Perth; confirm travel and marina access directly.
No YouSail-listed provider is currently shown for this state. You can browse other locations, but confirm coverage before booking.