What We Do
Three core services, planned as one energy system for your property
Solar Systems
Solar PV designed around your roof, usage and future plans — reducing grid reliance from day one.
Explore SolarBattery Storage
Store your excess solar for nights and peak times — from single home batteries to commercial systems.
Explore BatteryAir Conditioning
Split and ducted systems designed, installed, repaired and maintained — year-round comfort since 1969.
Explore Air ConditioningWhy Choose Sun Heating & Cooling
A family-owned local business that stands behind every installation
SAA Accredited
Solar design and installation carried out to Australian standards and accreditation requirements.
One Team, Three Services
Solar, battery and air conditioning planned together — no juggling multiple contractors.
Local & Family-Owned
A Northern Beaches family business serving Sydney for over five decades — we live here too.
Support After Install
Repairs, maintenance and honest advice for the life of your system — not just the sale.
Incentive eligibility depends on current policies, equipment and your project details — we confirm what applies in your quote.
Featured Projects
Recent solar, battery and air conditioning work across Sydney.
Northern Beaches
Northern Beaches Residence — 10 kW Rooftop Solar
Brookvale
Brookvale Commercial Rooftop — 30 kW Solar
Frenchs Forest
Frenchs Forest Home — Solar + 13.5 kWh Battery
Artarmon
Artarmon Small Business — 40 kWh Storage
Curl Curl
Curl Curl Home — Ducted Reverse Cycle
Dee Why
Dee Why Retail Fitout — Multi Split
What Our Customers Say
Feedback from homes and businesses we've worked with across Sydney.
The team assessed our roof and usage properly instead of pushing a package. The solar system has performed exactly as they said it would, and the whole job was clean and on time.
We added a battery to our existing solar. They explained the incentives we qualified for and handled everything — the quote matched the final invoice.
Second time using Sun — first air conditioning, now solar on the same visit plan. Rare to find one licensed team that does all three properly.
Our workshop 30 kW system was scoped around our actual load rather than a brochure package. Bills dropped noticeably in the first quarter and the install barely interrupted production.
The ducted system went in before summer with zero mess. The zones work beautifully - quiet and even - and every step was explained clearly before it happened.
They retrofitted a battery to our existing panels and set it up so we actually understand it. Support after the install has been just as honest as the sales pitch.
How It Works
From first enquiry to a system you can rely on — a clear, no-pressure process
Tell Us About Your Property
Send an enquiry — we listen to your goals, usage and budget first.
Site Assessment & Clear Quote
We assess your property and quote the right system — incentives explained.
Install & Ongoing Support
Accredited installation, commissioning and support for the life of the system.