Gas vs electric hot water — which is better for Melbourne homes?

If your hot water system is on its way out — or you're building or renovating — you'll face the gas vs electric question. It's one of the most common things Melbourne homeowners ask us, and the honest answer is: it depends on your home. Here's a clear comparison so you can make the right call.

The quick comparison

Factor	Gas storage	Electric storage	Gas continuous flow	Electric heat pump
Upfront cost	$1,100–$2,000	$700–$1,300	$1,300–$2,700	$2,400–$4,500
Annual running cost*	~$350–$500	~$600–$900	~$280–$450	~$150–$300
Lifespan	10–15 years	8–12 years	15–20 years	15–20 years
VIC rebates available	No	No	No	Yes — VEU program
Requires gas connection	Yes	No	Yes	No

*Estimates based on average Melbourne household of 4 people. Actual costs vary with usage and tariff rates.

Gas hot water — pros and cons

Pros

✅ Cheaper to run than standard electric

✅ Heats water quickly — good for large households

✅ Continuous flow models never run out of hot water

✅ Works during power outages (storage models)

✅ Long lifespan — especially continuous flow

Cons

❌ Requires an existing gas connection

❌ Gas prices have risen significantly in Victoria

❌ No government rebates currently available

❌ Higher upfront cost than basic electric

❌ Installation more complex than electric

Electric hot water — pros and cons

Standard electric storage

✅ Lowest upfront cost of any system

✅ Simple installation — no gas required

✅ Works in homes without gas connection

❌ Most expensive to run day-to-day

❌ Shorter lifespan than gas systems

❌ No rebates available

Heat pump electric

Best value long-term

✅ Up to 75% cheaper to run than standard electric

✅ VEU rebates available — up to $1,000 off

✅ Long lifespan — 15–20 years

✅ No gas connection needed

❌ High upfront cost

❌ Needs adequate outdoor space for the unit

What about solar hot water?

Solar hot water uses rooftop panels to heat water, with a gas or electric booster for cloudy periods. It has the lowest long-term running costs of any system, and federal rebates (Small-scale Technology Certificates) significantly reduce the purchase price. The main downsides are the highest upfront cost and the need for suitable north-facing roof space. For Melbourne homeowners planning to stay in their home for 10+ years with good roof access, solar is a genuine contender.

Does Melbourne's climate affect the decision?

Yes. Melbourne's variable weather matters for two of these systems. Heat pumps work by extracting warmth from the surrounding air — they're less efficient in very cold weather, though modern models cope well with Melbourne winters. Solar hot water relies on sunshine, and Melbourne's cloudy winters mean the booster will work harder from June to August. Neither is a dealbreaker, but it's worth factoring in.

If you have solar panels on your roof

This changes the equation significantly. If you have rooftop solar panels generating excess electricity during the day, a smart electric hot water system can be configured to run during peak solar generation hours — effectively giving you near-free hot water. This is one of the best uses of excess solar energy, and makes a heat pump or even a standard electric system very competitive against gas.

The verdict for Melbourne homes

Our recommendation

Homes with gas already connected: Gas continuous flow is our top pick — lower running costs than electric, unlimited hot water, and long lifespan.

Homes without gas: A heat pump is the best long-term investment, especially with VEU rebates reducing the upfront cost.

Tight budget: Standard electric storage gets you started at the lowest upfront cost, but budget for higher ongoing bills.

The best system for your home depends on your gas situation, household size, budget, and whether you have solar panels. Call us and we'll give you an honest recommendation for your specific circumstances — free, no obligation.