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13 results 1 based here · 12 serve the area★ 5.0 average from 58 reviewslistings updated 7 Oct 2026
Air conditioning installers and HVAC technicians for split systems, ducted heating and cooling, and servicing. Compare 13 air con & HVAC technicians in St Marys NSW: ratings, licences, services and contact details, and ask up to 3 of them for free quotes.
HVAC · Commercial Air Conditioning, Commercial Refrigeration, Commercial Coolroom Installation
Master Freeze is an HVAC business in St Marys, NSW, working on commercial air conditioning, refrigeration and coolroom installation.
Based in St Marys NSW
These businesses aren't based in St Marys but list it as a service area.
Based in Whalan NSW · serves St Marys
Air conditioning business in Colyton, NSW, servicing Colyton, Oxley Park, Erskine Park, Mount Druitt, Rooty Hill, St Clair and St Marys.
Based in Colyton NSW · serves St Marys
Based in Saint Clair NSW · serves St Marys
HVAC · Air Conditioner Repairs, Air Conditioner Installations, Heating System Installations
Serves this area
Air conditioning business in Saint Marys, NSW for installations, repairs, ducted work, duct cleaning and heating systems.
Based in Saint Marys NSW · serves St Marys
HVAC · Air Conditioning Installation, Air Conditioning Service/Breakdown, Air Conditioning Maintenance
Serves this area
Air conditioning and refrigeration business in St Clair, NSW, servicing homes and businesses across St Marys, Erskine Park and nearby suburbs.
Based in St Clair NSW · serves St Marys
Air conditioning business in St Clair, NSW, servicing Colyton, Erskine Park, Mulgoa, St Marys and nearby suburbs.
Based in St Clair NSW · serves St Marys
Based in Lethbridge Park NSW · serves St Marys
HVAC · Online estimates, On-site services, Repair services
Serves this area
Based in St Clair NSW · serves St Marys
Based in Jordan Springs NSW · serves St Marys
HVAC · Freezer Repairs, Air Conditioning Installations, Cool Rooms Installations
Licensed Serves this area
Refrigeration and air conditioning business in Saint Marys, NSW for fridge repairs, freezer repairs, ice machines and cool rooms.
Based in Saint Marys NSW · serves St Marys
HVAC · Residential Fridge Repairs, Commercial Fridge Repairs, Coolroom Repairs & Maintenance
Serves this area
Master Fridge Repairs is a mobile fridge repair service in Mount Druitt, NSW, covering residential and commercial fridges, coolrooms and freezer rooms.
Based in Mount Druitt NSW · serves St Marys
HVAC · Residential Electricians, Commercial Electricians, Industrial Electricians
Licensed Serves this area
Based in Seven Hills NSW · serves St Marys
Tell us about the job and we'll match it with up to 3 air con & HVAC technicians in St Marys. Your contact details go only to businesses on a paid plan here, and after you send we tell you which businesses got them. Free, no obligation.
Air conditioning installers and HVAC technicians for split systems, ducted heating and cooling, and servicing. Aussie Builders Directory lists 13 air con & HVAC technicians in St Marys NSW, with ratings, licences and the services each one offers.
Compare two or three. Check each one's licence on your state regulator's public register, read recent reviews, look at photos of similar jobs, and ask for a written, itemised quote. A business that is owner verified on Aussie Builders Directory has confirmed it runs the listing.
It depends on the size of the job, materials, access, and how soon you need it done. Most trades quote a fixed price for a defined job and an hourly rate for repairs and call-outs. Asking two or three local businesses for a written quote is the quickest way to see the going rate in St Marys.
Most residential trade work in Australia must be done by a licensed contractor, and building work above a set value needs a written contract and home warranty insurance. The rules differ by state, so check the licence number before work starts. Listings marked "Licensed" show a licence or certification on their profile.
Some businesses are based in a nearby suburb but travel to jobs here. On suburb pages we list businesses based in the suburb first, then the ones that say they serve it.
Tell us about the job once. We match your request with up to 3 air con & HVAC technicians near you. A business on a paid plan here gets it with your name and contact details and can contact you directly. A business on the free plan sees the job and your suburb but not your details, so it can't contact you unless it upgrades. A business that hasn't claimed its listing sees your request only once it claims. After you send, we tell you which applies to each business. It's free and there's no obligation.