Air conditioning for offices, retail spaces, warehouses, and hospitality venues across the Central Coast and Lake Macquarie. Gary designs systems that keep your staff and customers comfortable — and installs them without shutting down your business.
Commercial HVAC is a different discipline to residential work. The load calculations are more complex, the equipment is heavier-duty, the compliance requirements are more stringent, and the stakes are higher — a failed system in a retail shop on a 40°C day costs you customers and revenue.
Gary has extensive experience designing and installing commercial HVAC systems across the Central Coast — from small professional offices to large retail tenancies, medical centres, and industrial warehouses. He understands the specific requirements of commercial environments: after-hours installation to avoid disrupting your business, equipment that can handle continuous operation, and systems designed for the actual occupancy and heat loads of commercial spaces.
As a VRF/VRV specialist, Gary can design sophisticated multi-zone systems for larger commercial premises — giving you independent temperature control across different areas from a single outdoor unit array, with energy recovery between zones.
Planned preventive maintenance is the most cost-effective way to keep commercial HVAC systems running reliably. Gary offers tailored maintenance agreements for commercial clients — scheduled inspections, filter changes, coil cleaning, and priority response for breakdowns. Ask Gary about a maintenance plan for your business.
Ask About Maintenance PlansGary provides detailed commercial quotes with full system specifications. Responds within one business day.
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.
Detailed commercial quotes with full system specifications. Gary responds within one business day.