Serving Central Coast & Lake Macquarie
Air Conditioning
Air Conditioning
Done Right.
Split systems, ducted AC, commercial HVAC, and emergency repairs — delivered with honest advice, tidy workmanship, and a fixed price you can count on.
Licensed & Insured — Lic 469578C
Fixed-Price Guarantee
Authorised Hitachi & Temperzone
Contractor's Lic 469578C
RTA AU068433
Authorised Hitachi Installer
Authorised Temperzone Installer
ABN 17 678 580 642
What We Do
Air Conditioning & HVAC Services
From a single split system to a full commercial VRF installation — Gary handles it all across the Central Coast and Lake Macquarie.
Meet the Owner Lic 469578C Authorised Hitachi & Temperzone Fixed-Price Guarantee Same-Day Emergency Response
A Local Who Actually Shows Up
I'm Gary Lui, owner of Lilac Air Conditioning. I started this business because I was tired of seeing homeowners get let down by contractors who overpromise and underdeliver. Every job I take on, I show up on time, I explain what I'm doing, and I charge exactly what I quoted.
Based in Cooranbong, I service the whole Central Coast and Lake Macquarie — from Woy Woy to Wyong, Gosford to Terrigal. When your AC fails on a 40-degree day, you need someone local who can actually get there.
Google Reviews
What Our Clients Say
Trusted by families and businesses across the Central Coast and Lake Macquarie.
Megan Parker
6 months ago
"Had a wonderful experience! Gary and his team were professional, friendly, and efficient. Had an aircon installed and it looks great. I highly recommend their services!"
Google review
Brett Ashman-Steel
Local Guide · 3 months ago
"Gary came highly recommended by another business. He provided a quick and affordable quote and within days the problem was rectified. Very friendly and professional service. Would certainly recommend Lilac HVAC."
Google review
Perfectionist Detailing
3 months ago
"From start to finish, Gary was a pleasure to deal with when we needed an additional outlet installed to our ducted aircon system. He is a highly knowledgeable professional who takes pride in his work and the service he delivers to customers."
Google review
Michael
3 months ago
"We had four air conditioners installed and couldn't be more satisfied. From the initial quotation to the final installation, communication was always prompt and professional. The installer arrived on time, worked diligently, and ensured everything was installed to a high standard. Excellent workmanship and very reliable service."
Google review
Rod Fernandez
3 months ago
"Gary came out to my place on pretty short notice and did a great job on maintenance on our ducted system. He's a friendly polite guy and his offsider was great as well — very reasonable price and tidy work. I'll definitely recommend Lilac HVAC and re-engage them for future work."
Google review
Robin Koraca
7 months ago
"The installer was on time and did a wonderful job. The price was excellent and we were so happy with the job we are having another unit installed to replace an old unit. Highly recommend this company."
Google review
Michelle Swanepoel
8 months ago
"Very friendly service — the work done was neat and quick and he took the time to answer all questions we had. Communication was excellent, keeping us in the loop of any delays or expected timeframes. Highly recommend Gary!"
Google review
Jordan Richardson
9 months ago
"Very impressed with Gary from Lilac. He arrived on time and was very professional. The job didn't take long at all and our new AC unit has taken the edge off this winter. Highly recommend."
Google review
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Common Questions
Frequently Asked Questions
At least once a year — ideally before summer. The Central Coast's coastal humidity accelerates coil fouling and filter blockages, so annual servicing keeps your system running efficiently and prevents costly breakdowns in peak heat.
A split system conditions a single room or zone using one indoor and one outdoor unit — ideal for bedrooms, living areas, or targeted cooling. A ducted system uses a central unit connected to multiple rooms via concealed ductwork, providing whole-home climate control from a single system.
Yes. Gary offers same-day emergency response for breakdowns across the Central Coast and Lake Macquarie. Call Gary directly on 0401 764 917 — he picks up.
Yes. Gary Lui holds Contractor's Licence 469578C and RTA Number AU068433. Lilac Air Conditioning is fully licensed and insured for all residential and commercial HVAC work in NSW.
Yes. Gary provides free, fixed-price quotes for all new installations across the Central Coast. The price quoted is the price you pay — no hidden extras, no surprises on the day.
Gary is an authorised Hitachi and Temperzone installer and can supply and install all major brands including Daikin, Mitsubishi Electric, Fujitsu, Samsung, and Carrier. He'll recommend the best option for your home, budget, and usage.
Service Areas
Your Local HVAC Specialist
Based in Cooranbong, Gary services the entire Central Coast and southern Lake Macquarie — from Woy Woy and Gosford to Terrigal, Avoca Beach, and Wyong.
Ready to Get Started?
Get a Free Fixed-Price Quote Today
Whether you need a new installation, an urgent repair, or a routine service — Gary responds fast and quotes honestly.