Builders & developers
Priced from drawings, booked to program, staged around your trades — with handover docs your certifier actually wants.
Design, supply and installation of commercial air conditioning, mechanical services and refrigeration plant across Perth's northern suburbs.

From tenancy fit-outs to full mechanical services packages, Doylair works alongside builders, project managers and business owners to deliver commercial HVAC and refrigeration that performs from day one.
We install and commission across every major brand — Daikin, Mitsubishi Electric, Toshiba, Fujitsu, Hitachi, LG, MDV and more — with smart zone control from iZone and AirTouch.
Commercial installation is about programs, compliance and coordination — here's how we fit your project.
Priced from drawings, booked to program, staged around your trades — with handover docs your certifier actually wants.
Shops, offices and clinics — installed around landlord requirements, base-building services and your opening date.
Front-of-house comfort, back-of-house refrigeration and kitchens that don't cook the staff — often installed after hours.
Workshops, warehouses and plant rooms: ventilation, evaporative and mechanical services engineered for the real workload.
A commercial install that runs like a program line — because it is one.
Send drawings or walk us through the site — we return a detailed, itemised price with options and lead times.
Equipment selections, services coordination and program dates locked in with your supervisor before anyone's on site.
Rough-in, fit-off and commissioning staged to your build — after-hours and weekend works where trade can't stop.
Tested, balanced and documented: commissioning data, electrical certificates and warranty registration in one pack.
The questions builders and business owners ask before they engage us.
Yes — we quote from your drawings, book to your program and stage works around other trades. Rough-in, fit-off and commissioning are scheduled as separate visits where the build calls for it, and we keep the site supervisor in the loop the whole way.
Every commercial installation is handed over with commissioning data, compliance certificates for the electrical work and manufacturer warranty registration — everything your certifier and your client need in one pack.
Yes. For trading businesses we regularly install nights and weekends so you don't lose a day of trade. After-hours works are priced into the quote up front — no surprises.
We do. Doylair is led by a certified electrician, so power supply, isolators and controls wiring are done in-house to standard — one contractor, one point of responsibility.
"Despite my tricky air conditioning setup, he took the time to explain everything and was happy to tackle the difficult job. Philip's 'no job is too hard' attitude stood out."Sal S — Google review
Upload drawings and photos with our large-scale project form and we'll return a tailored proposal.
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