Gas Hot Water System Replacement in Clayton, VIC
If your gas hot water system in Clayton has failed or is close to it, you have two real choices: replace it like for like, or switch to a heat pump. A new gas storage system typically costs $1,200 - $3,500 installed and a continuous flow unit $1,500 - $3,000 (national ranges, 2026), with no rebate. A heat pump typically costs $2,100 - $4,100 installed in Clayton after rebates and runs for about $200 - $400 a year against $800 - $1,200 for gas. Compare both before you replace.
Victoria Gas Ban: Act Before the Deadline
From 1 March 2027, gas hot water systems in existing homes must be replaced with an efficient electric alternative (heat pump) when they reach end-of-life. Repairs are still allowed. New builds already banned from gas connections since January 2024. Rentals also face mandatory replacement of gas heaters.
With 80% of Clayton homes connected to gas, demand for heat pump installers will surge as the deadline approaches. Switching now means shorter wait times, current rebate levels, and immediate savings on your energy bills.
Cost Comparison
| Cost Factor | Gas Hot Water | Heat Pump |
|---|---|---|
| Annual running cost | $800 - $1,200/yr | $200 - $400/yr |
| Annual savings | - | $400 - $800/yr |
| Gas supply charges saved | - | $300 - $500/yr |
| Installed cost | $1,200 - $3,500 (no rebate) | $2,100 - $4,100 after rebates |
| Estimated payback period | - | 3 - 5 years |
Like for like prices are national installed ranges from Tempco Energy 2026 installation cost guide and What's The Damage hot water cost index (September 2026), checked September 2026. Heat pump: PumpSwap's modelled pricing for Clayton. Running costs are typical household figures; yours depend on tariff and usage.
Worked example for Clayton: a mid-range heat pump quoted at about $4,700 installed comes to about $3,100 once federal STCs, the Solar Victoria rebate and Victorian Energy Upgrades certificates are taken off, for households that qualify. Climate zone 6 sets the STC count, so your own quote will differ.
Save Even More by Disconnecting Gas
If hot water is your only gas appliance, switching to a heat pump lets you disconnect gas entirely and eliminate the $300-$500/year gas supply charge. Combined with the running cost savings, total annual savings can reach $700-$1,300. With 80% of Clayton homes on gas, you are not alone in making the switch to all-electric.
How to Switch from Gas Hot Water to Heat Pump in Clayton
Get a site assessment
A licensed installer visits your Clayton home to assess your current gas hot water setup, available space for the heat pump unit, and electrical capacity.
Choose your heat pump system
Select the right heat pump size and brand based on your household size, hot water usage, and budget. Your installer will recommend the best options.
Installation and gas disconnection
Your old gas unit is removed and the heat pump is installed. The gas supply to the hot water can be disconnected, eliminating ongoing gas supply charges.
Claim rebates and start saving
Your installer handles STC paperwork as a point-of-sale discount. State rebates are applied or claimed separately. You start saving from day one.
Rebates Available in Clayton, VIC
The same rebates apply whether you are replacing a gas system or any other type. All heat pump installations in Victoria qualify for these incentives.
Small-scale Technology Certificates (STCs)
Applied as a point-of-sale discount by your installer. Value varies by system type and climate zone.
Solar Victoria Hot Water Rebate
Victorian owner-occupiers: 50% of the purchase price up to $1,000, or up to $1,400 for an eligible locally made system. Combined household taxable income under $150,000 (reduced from $210,000 on 1 July 2026), property value under $3 million, replacing a system at least 3 years old, using a Solar Victoria registered installer. Stacks with the VEU discount and federal STCs.
Victorian Energy Upgrades (VEU) Certificates
All Victorian households. A variable point-of-sale discount funded by energy-saving certificates (VEECs), currently up to around $630 depending on the certificate price. Stacks with the Solar Victoria rebate.
What happens to my old gas hot water system?
Your installer will remove and dispose of the old gas unit as part of the installation. If the gas connection was only used for hot water, you can have the gas supply disconnected entirely, saving $300-$500/year in gas supply charges. If you still use gas for cooking or heating, you can keep the connection but your gas bills will still drop significantly.
Replacing a Different System?
What are you replacing?
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