Gas vs Electric vs Solar Hot Water: Which Is Best for Canberra?

The four main hot water system types in Australia are gas storage, electric storage, solar, and heat pump. For Canberra homes, heat pump systems offer the best balance of efficiency and running costs thanks to the ACT government's rebates, while gas storage remains the most popular choice for fast recovery and reliable performance in cold winters. This guide compares all four so you can make the right decision for your home.

What Are the Pros and Cons of Gas Hot Water?

Gas storage hot water systems are the most common type installed in Canberra homes. They heat water in an insulated tank using a gas burner and keep it ready for use. According to Hipages, gas storage systems typically cost between $900 and $2,000 for the unit, plus $500 to $1,500 for installation.

• Pros: Fast recovery rate (heats water quickly), works well in cold weather, lower running costs than electric storage, no roof space needed
• Cons: Requires a gas connection, standing pilot models waste gas, tank loses heat overnight (standing losses), shorter lifespan than heat pumps
• Best for: Homes with existing natural gas connections, families who use a lot of hot water throughout the day, homes without roof space for solar
• Lifespan: 8 to 12 years
• Annual running cost: $400 to $700 (natural gas)

Gas instantaneous (continuous flow) systems are also an option. They heat water on demand without a tank, which eliminates standing losses. They cost more upfront but can be more efficient for smaller households.

What Are the Pros and Cons of Electric Hot Water?

Electric storage systems use a heating element inside an insulated tank, similar to a kettle. They are the cheapest to purchase and install but the most expensive to run. According to ServiceSeeking, electric storage units cost between $500 and $1,500 for the unit, plus $300 to $1,000 for installation.

• Pros: Lowest upfront cost, simple installation, no gas connection needed, available in many sizes
• Cons: Highest running costs of any type, slow recovery rate, not eligible for government rebates, being phased out in some jurisdictions for new builds
• Best for: Budget-conscious replacements where the existing system is electric and switching is not practical, rental properties
• Lifespan: 8 to 12 years
• Annual running cost: $700 to $1,200

In the ACT, electric storage hot water systems are no longer permitted in new builds. If your current electric system fails, it is worth considering an upgrade to a more efficient type rather than a like-for-like replacement.

What Are the Pros and Cons of Solar Hot Water?

Solar hot water systems use roof-mounted panels to heat water, with an electric or gas booster for cloudy days and winter. Canberra gets an average of 7.7 hours of sunshine per day in summer, making solar a viable option for much of the year. Unit costs range from $3,000 to $7,000 installed, according to industry data.

• Pros: Lowest running costs, environmentally friendly, eligible for government rebates, long lifespan
• Cons: Highest upfront cost, requires suitable roof space and orientation (north-facing is ideal), booster needed in winter, panels can be affected by frost in Canberra
• Best for: Owner-occupied homes with good roof orientation, environmentally conscious households, homes planning to stay long-term (to recoup the upfront cost)
• Lifespan: 15 to 20 years (panels), 8 to 12 years (tank and booster)
• Annual running cost: $100 to $300 (booster only)

What Are the Pros and Cons of Heat Pump Hot Water?

Heat pump systems work like a reverse-cycle air conditioner. They extract heat from the surrounding air and use it to heat water. They use about one-third of the electricity of a standard electric system, making them significantly cheaper to run. According to Oneflare, heat pump systems cost between $2,500 and $5,000 installed.

• Pros: Very low running costs, eligible for ACT government rebates, no roof panels needed, works on electricity (can be paired with solar PV), environmentally friendly
• Cons: Higher upfront cost than gas or electric, can be noisy (fan unit), efficiency drops in very cold weather (though modern units handle Canberra winters), needs outdoor space for the unit
• Best for: Homes looking for the best long-term value, homes with solar PV panels, environmentally conscious households, anyone wanting to reduce gas usage
• Lifespan: 10 to 15 years
• Annual running cost: $200 to $400

How Do the Four Types Compare?

Factor	Gas Storage	Electric Storage	Solar	Heat Pump
Purchase + Install	$1,400 - $3,500	$800 - $2,500	$3,000 - $7,000	$2,500 - $5,000
Annual Running Cost	$400 - $700	$700 - $1,200	$100 - $300	$200 - $400
Lifespan	8 - 12 years	8 - 12 years	15 - 20 years	10 - 15 years
ACT Rebates	No	No	Yes	Yes
Cold Weather	Excellent	Good	Needs booster	Good (modern units)

What ACT Government Rebates Are Available?

The ACT Government offers rebates for replacing old hot water systems with more efficient alternatives. As of 2026, the key programs include:

• Home Energy Support Program: Rebates for switching from gas or electric storage to a heat pump or solar system. Eligible households can receive rebates of up to $2,500 depending on the system type and household income.
• Sustainable Household Scheme: Interest-free loans for energy-efficient upgrades including hot water systems, available to all ACT homeowners.

These rebates can significantly reduce the upfront cost gap between a standard system and a heat pump or solar unit. For current rebate amounts and eligibility, check the ACT Government website.

Which Hot Water System Is Best for Your Canberra Home?

The right system depends on your home, your budget, and how long you plan to stay. Here is a quick guide:

• Older home with gas: Gas storage is usually the simplest replacement. If you want to reduce running costs, consider switching to a heat pump and taking advantage of ACT rebates.
• New build: Heat pump or solar are the best options. Electric storage is not permitted in new ACT homes, and the rebates make heat pumps very competitive on price.
• Apartment or townhouse: Gas instantaneous or a compact heat pump are usually the best fit where space is limited.
• Home with solar PV: A heat pump paired with rooftop solar panels is the most cost-effective combination. The heat pump runs on the excess solar power during the day, making hot water essentially free.

Whatever system you choose, proper installation by a licensed plumber is essential for safety, efficiency, and warranty compliance. Our hot water system service covers supply, installation, and connection for all four types. We also handle the gas fitting if you are going with a gas system.