If you live in Adelaide, you’ve probably noticed that your gas bill can creep higher than you’d like—especially in winter. As local plumbing and gas specialists, we regularly hear from homeowners and renters asking: “What’s the average gas bill in Adelaide?”
This guide breaks down what typical households pay, why Adelaide bills are higher than the national average, and what practical steps (including professional plumbing support) can help you save.
What Is the Average Gas Bill in Adelaide?
The average Adelaide household spends around $70–75 per month on gas—roughly $223 per quarter, or about $890 a year. That’s about 20% higher than the national average, according to recent data from Selectra and Econnex.
But bills vary significantly depending on household size, efficiency, and seasonal demand.
Bills by Household Size in Adelaide
1-Person Households
Singles living in apartments or smaller homes usually spend $37–65 per month, according to Energyse data based on Australian Energy Regulator (AER) usage profiles (Energyse 2025). Most of this comes from cooking, showering, and a small amount of heating.
Many hot water systems are designed for families, meaning singles often pay to heat more water than they need. A compact continuous flow hot water unit saves energy in smaller households by only heating water on demand.
2-Person Households
Couples or housemates typically spend $57–100 per month (Energyse 2025). With double the showers, laundry, and winter heating, costs can climb quickly.
For owner-occupiers, servicing your gas heater annually keeps it safe and ensures it runs at peak efficiency. An untuned heater can burn significantly more gas without you realising.
3-Person Households
Small families generally pay $85–150 per month (Energyse 2025). Usage spikes in winter—Energyse notes that a 2-person Adelaide household can use three times more gas in July than in January, and that trend multiplies with larger families.
4-Person Households
Families with four or more people often spend $90–155 per month, placing Adelaide among the higher-cost cities in Australia (Selectra 2025). Multiple showers, cooking, laundry, and space heating keep systems working overtime. And if any of these systems are faulty, you could see your bills skyrocket in winter.
A leaking hot water tap or pipe means you’re literally paying to heat water that disappears down the drain. Our leak detection service finds and fixes these hidden issues before they inflate your quarterly bill.
Why Are Gas Bills Higher in Adelaide?
South Australians consistently pay above the national average for gas. Here’s why:
- Seasonal demand – Winters in Adelaide send usage soaring, particularly for heating and hot water.
- Older appliances and leaks – A poorly maintained hot water unit or hidden leak wastes gas and money.
- Supply charges – While retailers set prices, fixed supply costs are often higher in SA.
- Home efficiency – Poor insulation and outdated systems mean more gas is needed to stay comfortable.
Seasonal Variations: What to Expect
Gas bills fluctuate with the seasons:
- Winter (June–August): Bills can more than double due to heating.
- Summer (Dec–Feb): Lower bills—mainly cooking and some hot water.
- Shoulder seasons: Moderate, but still influenced by hot water demand.
Energyse’s modelling shows a 2-person Adelaide household can use 6,000 kWh of gas in winter vs. just 1,800 kWh in summer (Energyse 2025). That’s a huge difference—and highlights why efficiency matters.
Pro tip: Watch the “average daily usage” line on your bill. If it jumps unexpectedly, it may be time to call an emergency plumber to check for a leak or appliance fault.
Practical Tips to Lower Your Gas Bill
- Take shorter showers (hot water is a major cost).
- Service your heater before winter.
- Replace outdated appliances with energy-rated models.
- Fix plumbing leaks quickly—especially those connected to hot water.
- Book a gas efficiency check with Level Adelaide for tailored advice.
How Plumbing Services Can Lower Your Gas Bill
At Level Adelaide, we help families save on gas through expert plumbing solutions:
- Hot Water Efficiency Checks
Regular hot water servicing keeps burners efficient, reducing energy waste. - Gas Appliance Upgrades
We install modern, energy-efficient heaters and cooktops that cut usage. - Leak Detection & Repairs
Our leak detection service finds hidden leaks before they inflate bills and pose safety risks. - Compliance & Safety Certificates
Every new gas installation comes with certification, ensuring your system is safe and running efficiently.
Free Smart Plumbing Health Check
In addition to these services, we also offer a complimentary plumbing health check for new customers. We’ll inspect key areas of your system and provide practical, preventative advice—no strings attached.
