Gary is an authorised Hitachi installer on the Central Coast — supplying, installing, and servicing the full Hitachi residential and commercial range. Manufacturer warranty support, expert installation, and genuine Hitachi parts.
Gary has been installing Hitachi air conditioning systems for over a decade, and it's the brand he recommends most often to his residential and commercial clients. The reason is simple: Hitachi systems are built to last in Australian conditions, perform consistently in extreme heat, and are backed by strong manufacturer support.
Hitachi's residential range covers everything from compact split systems for apartments to large-capacity units for open-plan homes. Their commercial range includes VRF/VRV systems capable of serving entire office buildings from a single outdoor unit array. The energy efficiency ratings across the range are among the best available, which matters on the Central Coast where air conditioning runs hard through summer.
As an authorised installer, Gary has access to the full Hitachi product range, genuine parts, and manufacturer technical support. Installations completed by an authorised installer also qualify for the full manufacturer warranty — which can be voided if the system is installed by an unaccredited contractor.
Wall-mounted split systems for bedrooms, living areas, and open-plan spaces. Available in 2.0kW to 9.0kW capacities.
One outdoor unit serving multiple indoor units across different rooms. Ideal for whole-home comfort without ducted installation.
Concealed ducted systems for whole-home climate control. Quiet, efficient, and designed for Australian conditions.
Variable refrigerant flow systems for commercial premises. Multi-zone control, energy recovery, and building automation integration.
Free site assessment and fixed-price quote from an authorised Hitachi installer.
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.
Full manufacturer warranty. Expert installation. Fixed-price quote before any work begins.