Custom-designed ducted systems for homes and businesses across the Central Coast and Lake Macquarie. Zoned comfort, whisper-quiet operation, and a neat installation you won't see — just feel.
If you've ever had a split system in the living room that leaves the bedrooms sweltering, or a home where every room needs its own wall unit, ducted air conditioning is the answer. A properly designed ducted system delivers conditioned air to every room through concealed ductwork — no wall units, no visible equipment, just comfortable air wherever you need it.
On the Central Coast, where summer temperatures regularly push past 38°C and coastal humidity makes the heat feel even worse, a zoned ducted system gives you precise control over which areas of your home are cooled or heated and when. You only condition the spaces you're using, which keeps running costs down.
Gary designs each system from scratch for the specific home — calculating heat loads for each zone, selecting the right unit capacity, and planning the duct layout to ensure even airflow throughout. A poorly designed ducted system is expensive to run and never quite comfortable. A well-designed one is a genuine quality-of-life upgrade.
Gary visits your home to assess ceiling space, room layout, insulation, and sun exposure. He takes measurements and discusses your comfort priorities and budget.
Gary designs a zoned system tailored to your home — duct layout, diffuser positions, zone configuration, and unit selection. You receive a fixed-price quote with no surprises.
Gary and his team install the system with minimal disruption. Ductwork is run through ceiling cavities, diffusers are fitted flush to the ceiling, and the outdoor unit is positioned discreetly.
Every zone is tested and balanced for even airflow. Gary walks you through the controller, zone settings, and maintenance requirements before he leaves.
Gary is an authorised dealer for Hitachi and Temperzone ducted systems — two of the most reliable and efficient brands available in Australia. He also supplies and installs Daikin, Mitsubishi, Fujitsu, and other leading brands.
Gary services all suburbs across the Central Coast and southern Lake Macquarie:
Gary will visit your home, design a custom system, and provide a fixed-price quote — no obligation.
Lilac Air Conditioning has a 5.0 average from 50 Google reviews, and every one of them is five stars. Here are some, in the reviewers' own words.
Heidi Iveson
February 2025
"Not expecting our air conditioning to stop on one of the hottest days of the year, I contacted Gary and he advised me straight away his availability and turned up to review our situation. Unable to source spare parts for our older unit, Gary was up front and honest in quoting, supply and installation. I would highly recommend Gary for his experience, knowledge and thorough communication. Thanks Gary"
Tania Kanaan
July 2026
"We recently had our ducted air conditioning system serviced and were very happy with the service we received. Gary is friendly, knowledgeable and professional. Everything was explained clearly, and the service was completed efficiently. If you are located on the Central Coast, we would definitely recommend Lilac HVAC and will happily use them again in the future."
Sutha Suthakar
June 2026
"We got this group to service our Daikin Ducted reverse cycle AC system. Gary and his team were fantastic. They were on time and did thorough job. We found them to very professional and cleared lot technical questions we had. They are locals!!!!!! and located within the Watagan Estate. Keep up the good work guys."
Michael
January 2026
"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"
Gosford Dental Centre
June 2025
"We highly recommend Lilac HVAC. They were able to fix 3 previously installed units that were incorrectly linked at our business premises. Very professional service and knowledgeable."
Michelle MacKnight
March 2026
"Thanks Gary and your Apprentice for installing my new split system air conditioner. I appreciate your friendliness, punctuality, and job quality. I am very happy with my new system!"
Perfectionist Detailing
February 2026
"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. Thank you Gary!"
Brett Ashman-Steel
January 2026
"Gary came highly recommended by another business. We discussed the problem we were having with my partners business and he provided a quick and affordable quote. Within days the problem was rectified. Very friendly and professional service. Would certainly recommend Lilac HVAC. Thanks Gary"
Takes less than 60 seconds — and it means the world to a small local business.
Gary visits your home, designs a custom zoned system, and gives you a fixed-price quote — no obligation, no pressure.