

Frequently Asked Questions
1. What HVAC services does Lilac HVAC offer in Lake Macquarie and the Central Coast?
Lilac HVAC provides comprehensive heating, ventilation, and air conditioning services, including:
- Installation – Split system, ducted air conditioning, and commercial HVAC solutions.
- Repairs – Fast and reliable air conditioning and heating repairs.
- Maintenance – Preventative servicing to improve efficiency and extend lifespan.
- Air Quality Solutions – Filtration and purification systems for cleaner indoor air.
We serve residential and commercial clients across Lake Macquarie and the Central Coast.
2. How often should I service my air conditioning unit?
It's recommended to service your air conditioning unit once a year to maintain efficiency and prevent breakdowns.
For commercial systems, servicing twice a year is ideal.
Regular maintenance:
- Reduces energy costs.
- Prevents unexpected failures.
- Extends the system's lifespan.
3. What are the benefits of installing a ducted air conditioning system?
Ducted air conditioning provides whole-house cooling and heating with:
✔ Even Temperature Distribution – No hot or cold spots.
✔ Energy Efficiency – Zoning allows you to control rooms separately.
✔ Discreet Installation – Only vents are visible, blending into your home or office decor.
4. How can I improve the energy efficiency of my HVAC system?
Here are some ways to reduce your energy bills and improve efficiency:
- Regular servicing – Ensures your system operates at peak performance.
- Programmable thermostats – Automatically adjust temperatures based on usage.
- Sealing ducts – Prevents air leaks and energy loss.
- Proper insulation – Helps maintain consistent indoor temperatures.
5. Do you offer emergency HVAC repair services?
Yes! Lilac HVAC provides emergency HVAC repair services across Lake Macquarie and the Central Coast.
If your system:
✔ Stops working suddenly.
✔ Blows warm air when cooling is needed.
✔ Makes unusual noises or leaks.
Call us immediately on 0401 764 917 for urgent repairs.
If your system:
✔ Stops working suddenly.
✔ Blows warm air when cooling is needed.
✔ Makes unusual noises or leaks.
Call us immediately on 0401 764 917 for urgent repairs.
6. What factors should I consider when choosing an air conditioning system?
Choosing the right system depends on:
- Room size & layout – Bigger spaces require higher-capacity systems.
- Energy efficiency ratings – Look for higher star ratings to save on power bills.
- Cooling & heating needs – Split system for individual rooms, ducted for whole-home climate control.
- Budget – We provide tailored solutions to match your budget and comfort needs.
7. Are your technicians licensed and insured?
Yes, all Lilac HVAC technicians are fully licensed and insured, ensuring:
✔ High-quality workmanship.
✔ Adherence to Australian safety standards.
✔ Reliable, professional service every time.
✔ High-quality workmanship.
✔ Adherence to Australian safety standards.
✔ Reliable, professional service every time.
8. What areas do you serve within Lake Macquarie and the Central Coast?
We offer HVAC services in all suburbs across Lake Macquarie and the Central Coast, including:
- Belmont, Warners Bay, Toronto, Morisset (Lake Macquarie).
- Gosford, Wyong, The Entrance, Terrigal (Central Coast)
Not sure if we service your area?
Give us a call on 0401 764 917
9. What is the typical lifespan of an HVAC system?
Most HVAC systems last between 10 to 15 years, depending on:
- Usage frequency.
- Regular maintenance.
- Brand & model quality
Routine servicing can extend the lifespan of your system.
10. How do I know if my HVAC system needs repair or replacement?
If you notice:
✔ Frequent breakdowns or repairs.
✔ Uneven temperatures across your home or office.
✔ Higher energy bills without increased usage.
✔ Strange noises, leaks, or odours.
It may be time for a professional assessment.
We can help you decide whether repairing or replacing your system is the best option.
✔ Frequent breakdowns or repairs.
✔ Uneven temperatures across your home or office.
✔ Higher energy bills without increased usage.
✔ Strange noises, leaks, or odours.
It may be time for a professional assessment.
We can help you decide whether repairing or replacing your system is the best option.

Schedule an Appointment
Ready to improve your home or business comfort? Contact Lilac HVAC for heating, cooling, and air conditioning services in Lake Macquarie and the Central Coast.