Authorised Hitachi and Temperzone installer serving the Central Coast and Lake Macquarie. Gary sizes it correctly, installs it neatly, and makes sure you know how to use it before he leaves.
A split system is only as good as its installation. An undersized unit runs constantly and never achieves the set temperature. An oversized unit short-cycles, wears out faster, and leaves the room feeling clammy. Poor installation — inadequate pipe insulation, incorrect refrigerant charge, badly positioned indoor unit — can add hundreds of dollars to your annual running costs and halve the life of the equipment.
Gary has been installing split systems across the Central Coast for over 15 years. He takes the time to assess your room properly, recommends the right capacity and brand for your situation, and installs to manufacturer specification every time. Every installation includes a full commissioning check and a walkthrough of the system controls before he leaves.
As an authorised Hitachi and Temperzone installer, Gary has access to the full product range and can supply and install in a single visit — no waiting for a separate delivery.
Gary is an authorised dealer and installer for Hitachi and Temperzone — two of the most reliable brands in the Australian market. He also supplies and installs all other major brands to suit your budget and requirements.
Based in Cooranbong, Gary services the entire Central Coast and southern Lake Macquarie. Click your suburb for local information:
Fixed-price quote, no obligation. Gary responds within a few hours.
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.
Free site assessment, fixed-price quote, no obligation. Gary personally handles every installation across the Central Coast and Lake Macquarie.