Local HVAC experts for Woy Woy, Umina Beach, and the Gosford peninsula. Fast response for repairs and installations.
The Woy Woy peninsula has water on two sides, with Brisbane Water on one and Broken Bay on the other, and Umina Beach and Ettalong Beach are just along the road. Salt is part of daily life here. It gets onto outdoor units, window frames and everything else, and an air conditioner is no different.
Gary recommends coastal-rated outdoor equipment for properties within 500 metres of the waterfront. Lilac Air Conditioning also plans peninsula work around the houses themselves. Heritage weatherboard cottages and older fibro homes often have little roof space, which means ducted systems are frequently off the table and well-placed split systems are the practical answer.
The peninsula has plenty of long-term locals and sea-changers, and a lot of them want something simple to run. They don't want twelve settings or a manual. They want a quiet system that cools the bedroom at night and is simple to run.
Gary Lui at Lilac Air Conditioning covers Blackwall, Booker Bay and the rest of the peninsula, with a free on-site assessment and a fixed-price written quote on every job. If the first visit shows that a smaller, simpler system will do, he'll say so, because over-specifying a cottage helps nobody. Repairs and servicing for existing systems are part of the same service.
Local Climate Note
Woy Woy has water on both sides, so salt air reaches most of the peninsula, and the still, humid days of summer are the ones that test an air conditioner hardest.
A lot of cottages here were built long before anyone planned for ducting, and the ceiling cavity can be shallow or crowded. Gary will check before suggesting ducted. If it won't fit, a multi-head split system with one outdoor unit can cool several rooms without touching the ceiling.
The peninsula has plenty of smaller unit blocks, and owners corporations often like outdoor units to look tidy and sit in agreed spots. Lilac Air Conditioning can propose a neat position for the condenser and keep the pipework discreet, so your application has the detail it needs.
Residential Installations
Split systems and ducted AC installed right, first time.
Commercial HVAC
Minimal disruption. Maximum comfort. For your business.
Repairs & Breakdowns
AC broken on a 40-degree day? We show up.
Routine Maintenance
Keep your system running efficiently all year round.
VRF/VRV Systems
Multi-zone climate control for complex buildings.
Ventilation Solutions
Fresh air, compliance, and comfort — all covered.
In addition to Woy Woy, we service the following nearby suburbs. If your suburb isn't listed, call Gary — we cover a wide area.
Free, 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.
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"
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."
Takes less than 60 seconds — and it means the world to a small local business.
We service the entire Central Coast and Lake Macquarie region.