Combining solar with air conditioning is more important than most people realise. You’ve got summer electricity bills that go through the roof when you run air con, but proper solar sizing can actually make cooling your house cost almost nothing.
Look, air conditioning is usually the biggest power hog in your house during summer. Turn on a ducted system on a hot day and watch your meter spin. Most people just cop the massive bills because they need to stay cool.
Here’s what actually happens when you get solar sized properly for air con use. Instead of drawing expensive grid power during the day when you need cooling most, your panels are generating exactly when your system’s working hardest. Free power when you need it most.
Most solar quotes don’t factor in air conditioning properly. They size systems based on your normal usage, then you get massive bills when summer hits because the air con wasn’t included in calculations.
The timing works perfectly too. Hottest part of the day is when your panels generate most power and when you need cooling most. It’s like the two systems were designed to work together.
Battery storage makes it even better. Store excess solar during the day, then use it to run air con in the evening when the sun’s gone down but it’s still hot. Means you’re not buying expensive evening electricity from the grid.
Quality air conditioning makes a huge difference to how much power you actually use. Cheap systems are electricity hungry. Efficient systems with proper installation use way less power, which means smaller solar systems can handle the load.
Just to avoid conflicts of interest let’s go with an reputable aircon installer out of our state, AirMax Melbourne who knows this stuff inside out. They’re part of the VEU program which gives you rebates on efficient air conditioning so they can tell you all about how good solar helps with the aircon power bill. But if you’re in NSW regions like the Southern Highlands, you’ll need local HVAC specialists who understand how to size systems to work with solar.
The government rebates help with both upgrades. In Victoria, VEU rebates on efficient air conditioning, plus federal solar rebates on your panels. NSW has different programs but similar concept – making both systems more affordable.
Heat pumps for hot water are another win. Replace your electric or gas hot water with a heat pump, then run it during the day on solar power. Hot water for free instead of your biggest electricity bill.
Southern Highlands properties particularly benefit because you can fit bigger solar systems with more space. Plus you often have higher cooling loads with larger houses, so the savings add up fast when you get the sizing right.
Smart people plan both upgrades together. Size your solar system to handle air conditioning, hot water heat pump, maybe electric vehicle charging. Then you’re running almost everything on free solar power instead of paying for expensive grid electricity.
The payback period is incredible when you factor in air conditioning savings. Solar system might pay for itself in 4-5 years, but add in summer air con savings and you’re looking at 3-4 years total payback.
