Australia's directory of local builders and tradies
22 results 10 based here · 12 serve the area★ 5.0 average from 4 reviewslistings updated 7 Oct 2026
Air conditioning installers and HVAC technicians for split systems, ducted heating and cooling, and servicing. Compare 22 air con & HVAC technicians in Castle Hill NSW: ratings, licences, services and contact details, and ask up to 3 of them for free quotes.
HVAC · Air Conditioning Installation, Ducted Air Conditioners, Split System Air Conditioners
Air conditioning business in Castle Hill, NSW, supplying, installing and servicing residential and commercial air conditioners.
Based in Castle Hill NSW
Based in Castle Hill NSW
Based in Castle Hill NSW
Air conditioning business in Castle Hill, NSW, supplying, installing and maintaining domestic and commercial units and refrigeration systems.
Based in Castle Hill NSW
Based in Castle Hill NSW
Top Aircon is an air conditioning business in Castle Hill, NSW, covering repairs and servicing for homes and commercial clients.
Based in Castle Hill NSW
HVAC · Air Conditioning Installations, Air Conditioning Maintenance, Ducted Air Conditioning Servicing
Licensed
Air conditioning specialist in Castle Hill, NSW, supplying, installing and servicing air conditioning systems across the Hills District.
Based in Castle Hill NSW
Based in Castle Hill NSW
Electrician and air conditioning business in Castle Hill, NSW, working across residential, commercial, strata and industrial properties.
Based in Castle Hill NSW
Plumbers · Blocked Drains, Hot Water Systems Installations, Split System Air Conditioning Installati…
Licensed
Plumber and air conditioning business in Castle Hill, NSW handling blocked drains, hot water systems, gas plumbing and split system air conditioning.
Based in Castle Hill NSW
These businesses aren't based in Castle Hill but list it as a service area.
HVAC · Gas Radiant Heater Installations, Electrical Services, Hydraulic Services
Serves this area
Fit-out and maintenance business in Wetherill Park, NSW for commercial and industrial spaces, including HVAC, electrical, plumbing, gas fitting and roofing.
Based in Wetherill Park NSW · serves Castle Hill
HVAC · Air Conditioning System, Refrigeration Service, HVAC Installation
Serves this area
Air conditioning business in Baulkham Hills, NSW, supplying and installing systems and handling maintenance, refrigeration and HVAC work.
Based in Baulkham Hills NSW · serves Castle Hill
HVAC · Split System Air Conditioning, Ducted Air Conditioning, Commercial HVAC Services
Serves this area
Based in Baulkham Hills NSW · serves Castle Hill
Based in Baulkham Hills NSW · serves Castle Hill
Crest Air Conditioning is an air conditioning business in Bella Vista, NSW, servicing homes across the Hills area.
Based in Bella Vista NSW · serves Castle Hill
Mitsubishi Electric is an air conditioning and electronic equipment sales and repairs business in Baulkham Hills, NSW.
Based in Baulkham Hills NSW · serves Castle Hill
Temperature Solutions is an air conditioning and refrigeration business in Glenhaven, NSW, serving Castle Hill, Dural, Kellyville and nearby areas.
Based in Glenhaven NSW · serves Castle Hill
Plumbers · Emergency Plumbing, Blocked Drains, Hot Water Repairs
Licensed Serves this area
Based in Yennora NSW · serves Castle Hill
HVAC · Residential Electricians, Commercial Electricians, Industrial Electricians
Licensed Serves this area
Based in Seven Hills NSW · serves Castle Hill
Plumbers · Water Leak Detections, Hot Water Installations, CCTV Drain Camera Inspections
Licensed Serves this area
Omega Services is a plumbing and electrical business in Norwest, NSW, covering leak detection, blocked drains, hot water and solar work.
Based in Norwest NSW · serves Castle Hill
Plumbers · Blocked Drains, Hot Water Systems Installations, Split System Air Conditioning Installati…
Licensed Serves this area
Plumber and air conditioning business in Baulkham Hills, NSW for blocked drains, hot water systems, gas plumbing and split system air conditioning.
Based in Baulkham Hills NSW · serves Castle Hill
Plumbers · General Plumbing, Pipe Relining, Leak Detection Repairs
Licensed Serves this area
Based in Bella Vista NSW · serves Castle Hill
Tell us about the job and we'll match it with up to 3 air con & HVAC technicians in Castle Hill. 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 22 air con & HVAC technicians in Castle Hill 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 Castle Hill.
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.