Can You Run Your Air Conditioner on Solar Power? Yes — and Here’s How
At Climate Green, we often hear this question from Melbourne homeowners:
“Can I run my aircon using solar power and actually save money?”
Absolutely. In fact, when paired with reverse cycle air conditioning, solar is one of the smartest energy decisions you can make for year-round comfort.
Solar Air Conditioning – How It Works
During daylight hours, your rooftop solar system can generate enough energy to power your air conditioner — giving you cooling or heating powered by the sun, without paying for electricity from the grid.
And yes — solar panels still work on cold or cloudy days. Even in Melbourne’s winter, they continue producing power, though at a lower output. Pairing your solar system with a battery helps store excess energy, allowing you to run your aircon efficiently even in the evening.
Solar Sizing for Air Conditioning
To get the most from your system, you’ll need enough panels to match your aircon’s energy draw. Here’s a general guide:
- Small split system (2.5–3.5kW): ~6 panels (approx. 2–2.5kW system)
- Mid-size system: 6.6kW solar system is ideal
- Large ducted aircon: You may need 20+ panels or a system of 8–10kW+
The more panels you have, the more you can offset your cooling/heating costs — and other appliances, too.
Reverse Cycle Air Conditioning + Solar = Smart Savings
Reverse cycle aircons are already among the most energy-efficient systems on the market — and when powered by solar, they become even more cost-effective.
- A small unit may only cost 20–30 cents per hour
- Larger ducted units run at ~$1 per hour — much cheaper than gas heating
And with solar offsetting the power draw, your running costs could be close to zero during peak sunlight hours.
Tips for Using Solar + Reverse Cycle AC Efficiently
To maximise comfort and savings:
- Use the 20-degree rule: Keep your thermostat around 24°C in summer, 20°C in winter
- Zone your cooling/heating: Only run AC in rooms that are being used
- Keep filters clean: Regular maintenance improves energy efficiency
- Run your AC during the day: That’s when solar output is highest
Standard vs Off-Grid Solar AC
Most Melbourne homes use standard solar systems with inverters, which feed solar power directly to your home and aircon. Some off-grid setups use DC air conditioners, but for most urban households, grid-tied solar is the preferred (and rebate-eligible) choice.
Why This Matters for You
Imagine staying warm in winter and cool in summer while slashing your energy bills and reducing reliance on fossil fuels. That’s the promise of solar + reverse cycle systems — and with rebates available under VEU, STCs, and Solar Victoria, now is the perfect time to upgrade.
Let Climate Green Take Care of It All
We’re Melbourne’s trusted name for:
- Solar panel installations
- Reverse cycle air conditioning (split & ducted)
- Battery systems
- VEU-accredited decommissioning & rebate paperwork
From consultation to installation, we guide you through every step of your electrification journey.
1300 001 690
info@climategreen.com.au
www.climategreen.com.au
FAQs – Solar-Powered Air Conditioning
Q: Can I run my air conditioner on solar?
A: Yes. With the right number of panels (and optional battery), your AC can run mostly or entirely on solar — especially during the day.
Q: How many panels do I need?
A: A small system might only need 6 panels. Larger systems like ducted aircons could require 20+ panels. We help you calculate the right size.
Q: What’s the $5,000 aircon rule?
A: Multiply the cost of a repair by the age of the unit. If it exceeds $5,000, it’s more economical to replace it with a new, efficient system.
Final Thoughts
Combining solar power with reverse cycle air conditioning is a smart, sustainable upgrade for any Victorian home. It delivers:
- Lower energy bills
- Higher home value
- Comfort across all seasons
- A lighter carbon footprint
And with Climate Green’s full-service support, going electric is easier — and more affordable — than ever. Slash your energy bills by running your air conditioner on solar power. Learn how Climate Green helps Melbourne homes electrify with rebates and expert installs.
Let’s electrify your home and future-proof your comfort — the green way.
