Solar Powered Air Conditioning Brisbane
Brisbane families spend $1,400–$2,800/yr cooling the home. The right solar + smart scheduling + (optional) battery cuts that to under $300. 10kW from $7,290 — sized for ducted or split-system.
★ 4.9 / 212 cooling-optimised installs · A/C partner network for full-house upgrades
Match your solar to your A/C type
A 6.6kW system that's perfect for a single split won't keep up with whole-home ducted. Here's how Brisbane A/C draws map to solar sizing.
Single split system
1–2 rooms, 2.5–7 kW cooling capacity. Draws 0.8–2.2 kW of electricity when running. The easiest load to power from solar — even a 5kW system covers it during daylight hours. Most Brisbane homes have 2–3 of these in main living areas.
Multi-head split system
1 outdoor unit, 3–5 indoor heads. 6–10 kW cooling capacity. Draws 2.5–4 kW when most heads are running. Needs a 6.6kW+ solar system to cover during peak summer afternoons. Ideal for Queenslanders without ducting space.
Ducted reverse-cycle
Whole-home system, 10–18 kW cooling capacity. Draws 4–7 kW when running flat-out. Needs 10kW+ solar to run free during the day. The biggest electrical load in most Brisbane homes — and the highest-impact solar match.
Evaporative cooling
Older Brisbane homes, less common now. Lower power draw (0.5–1.5 kW) but uses a lot of water. Pairs trivially with even a small 3kW solar system — but performance suffers in Brisbane's high-humidity summers, so most upgrades are to reverse-cycle.
The 4-step free-A/C strategy
How we get a Brisbane ducted home from $2,000+/yr cooling bills down to under $200 — using solar generation patterns and smart scheduling.
Step 1 — Size solar to A/C + household
We measure your ducted/split capacity (kW), apply a 60-70% diversity factor (units don't all run at 100%), and add household baseload. A typical Brisbane ducted home needs 10kW solar; large family + pool + ducted needs 13.2kW.
Step 2 — Pre-cool from noon to 4pm
Set the thermostat to 22-23°C from noon, drop to 24-25°C at 4pm. Solar runs the compressor hard while generation is high; thermal mass in the home keeps you cool through 4-9pm peak. Result: minimal grid imports during the expensive evening window.
Step 3 — Smart thermostat or app control
Most modern A/C units have wifi (Mitsubishi Kumo Cloud, Daikin Onecta, Fujitsu Anywair). We program a schedule that aligns runtime with solar generation. A $250 Sensibo retrofit adds smart scheduling to older units.
Step 4 — Battery for evening cooling (optional)
If you need A/C running 9pm-midnight (kids' bedrooms, master suite, hot Brisbane nights), a 13.5 kWh battery covers it. Powerwall 3 or Sungrow SBH typically handles 4-6 hours of split-system run from stored solar.
Real example: Chermside 4-bed ducted home
Real Chermside customer — 14kW ducted Daikin, 2 bedroom splits, family of 4. Before vs after 13.2kW solar + Powerwall 3.
No solar, ducted A/C running 5pm–11pm
- Ducted A/C (14 kW cooling, summer)$1,640/yr
- 2 × bedroom splits (winter + summer)$420/yr
- Household power (no solar)$2,180/yr
- Total annual power bill$4,240/yr
13.2kW solar + Powerwall 3 + pre-cool schedule
- Ducted A/C (pre-cool on solar)$140/yr
- Bedroom splits (battery evening run)$60/yr
- Household power (10kW solar + 13.5 kWh battery)$320/yr
- Less: solar export FiT credit-$210/yr
- Net annual power bill$310/yr
Fixed-price A/C-sized packages
Every install includes A/C runtime modelling, Energex approval, smart-thermostat integration where supported, and a 10-yr workmanship warranty.
10kW Split-System Home
- Sized for 2–3 splits + household
- Sungrow SG10RS inverter
- Smart-plug scheduling for A/C runtime
- Free monitoring app setup
- Battery-ready DC strings
- 10-yr workmanship warranty
13.2kW Ducted A/C Home
- Sized for ducted A/C + family loads
- Sungrow SH10RT hybrid (battery-ready)
- Pre-cool scheduling included
- Smart thermostat integration
- Engineer-stamped layout
- 12-mo performance guarantee
13.2kW + Powerwall 3
- Ducted + evening bedroom splits
- Tesla Powerwall 3 (whole-home backup)
- Federal Cheaper Home Batteries rebate applied
- ToU-aware A/C scheduling
- Energex export-limit configured
- 10-yr Tesla warranty
Don't undersize for a ducted home
The classic mistake: a Brisbane ducted home gets a 6.6kW system because that's the standard package. A ducted A/C alone draws 4–7 kW — you'll import 3,000+ kWh/yr that solar should have covered. Always size to A/C nameplate + 50% household headroom.
Frequently asked questions
Brisbane solar + air-conditioning questions, answered by CEC-accredited installers.
Run the A/C on sunshine all summer
Solar sized for your actual A/C load. Smart-thermostat scheduling included. Battery options for hot Brisbane nights. Fixed-price quote within 24 hours.