Choosing the right hot water system can be a bit of a puzzle, but sorting the options doesn’t have to be stressful. Perth homeowners are spoilt for choice—yet that means price, features, and long-term savings are all on the table. Here’s what sets the costs, what each system type brings to the mix, and how to make sure the final bill fits the household.
Hot Water System Costs in Perth
Hot water systems are a big-ticket item, with upfront costs for supply and hot water system installation usually falling between $1,000 and $7,000 in 2025. Most Perth homes spend in the $1,600 – $4,500 range, with some premium options rising higher. The final cost can include the installation cost, removal of the old system, and other factors.
Installation costs can vary depending on a few factors:
- System type (electric, gas, heat pump, solar)
- Tank or no tank (storage vs. instantaneous)
- Size (from 50L to 400L+)
- Where the system is going (outdoor, indoor, hard-to-reach spots)
- Brand and quality (hardware costs can differ significantly between brands and models)
Average Price Ranges by System Type
Here’s a side-by-side comparison to make price differences clear. The third column shows typical hot water running costs per year for each system type. This table compares gas water heaters, solar water heaters, and electric hot water system options.
| System Type | Typical Cost Installed (AUD) | Typical Hot Water Running Cost/Year (Est.) |
|---|---|---|
| Electric Storage (Electric Hot Water System) | $1,600–$2,900 | $950–$1,450 |
| Gas Storage (135L–170L) (Gas Water Heaters) | $1,550–$3,800 | $900–$1,700 |
| Gas Continuous Flow (Instant) (Gas Water Heaters) | $1,800–$4,800 | $1,250–$1,900 |
| Heat Pump (Hot Water Heat Pump / Heat Pump System / Hot Water Heat Pumps) | $3,500–$4,995 | $478–$700 |
| Solar (Roof-Mounted) (Solar Water Heaters) | $4,000–$6,800 | $389–$530 |
Government rebates can reduce the cost of heat pumps and solar hot water by $400–$700.
For more detailed hot water system price and efficiency comparisons, see Canstar Blue’s reviews and ratings.
Key Factors That Influence Cost
A few factors tend to make or break the budget:
- Size of the unit (bigger means pricier)
- Switching fuel type or relocating the system (labour costs increase, especially if upgrading from a gas system to a heat pump or electric unit, as this may require a new electrical circuit to be drawn from the switchboard, along with additional plumbing and removal of the old system)
- Perth homes with awkward access, steep driveways or old plumbing may find installation on the higher side, particularly if the existing hot water system or current hot water system is difficult to access or if the condition of the old system adds complexity and cost to the process
- Brand and energy efficiency will boost long-term value, so don’t ignore warranty or aftersales support
Types of Hot Water Systems (with Price Range)
When choosing a hot water service for your home, it’s important to understand the four main types used around Perth. Each hot water system comes with its strengths—and a price tag.
The main types are storage systems (which use a storage tank or water tank to store heated water for later use), gas hot water systems, electric hot water systems, and solar water heaters. Instantaneous systems, also known as continuous flow or tankless systems, heat water on demand without the need for a storage tank.
Electric Hot Water Systems ($1,600–$2,900)
- An electric hot water system is simple, familiar, and usually the cheapest to buy and install.
- Storage tanks with an insulated tank are the norm, helping maintain temperature efficiency by keeping water hot after it is heated. However, they’re the highest for electricity use—often making up over 25% of a typical energy bill.
- Small, easy to fit, but expect higher running costs. If you have solar panels installed, pairing them with an electric hot water system can further reduce energy costs.
Gas Hot Water Systems
Gas Storage ($1,550–$3,800)
- Gas water heaters are a reliable option for homes with mains gas.
- Uses a storage tank or water tank to hold hot water in reserve for quick access.
- Replacing an old hot water system with a new gas storage model can improve efficiency.
- Good for medium to large households, especially those that use water at different times.
Gas Continuous Flow (Instantaneous) ($1,800–$4,800)
- Heats water as needed (no wasted electricity keeping a tank warm). These are also known as ‘instantaneous systems’ or ‘gas hot water systems’.
- Energy savings can be found here, especially in smaller households or if you want endless hot water. Instantaneous gas hot water systems are often more efficient than traditional storage-based systems.
- May require upgrades to the gas line, so chat with the installer first. Consider whether a natural gas or LPG gas hot water system is suitable for your household needs.
Heat Pump Hot Water Systems ($3,500–$4,995)
- Extracts air source heat from the outside air—works a bit like an air conditioner in reverse.
- A hot water heat pump or hot water heat pumps are energy-efficient alternatives for water heating, offering significant savings and environmental benefits.
- Needs a higher upfront spend, but slashes electricity bills by up to 70%.
- Heat pump hot water systems come in two main designs: split system and integrated system. Split systems have separate components, such as the compressor and water tank, allowing flexible installation locations. The external compressor unit in a split system may require a concrete slab for stability. Split heat pump systems can achieve higher temperatures due to their larger compressors. Integrated systems combine the compressor and water tank into a single, compact unit, saving space and simplifying installation.
- Proper installation and insulation of the storage tank or water tank is important to minimize heat loss and improve efficiency. Always follow the manufacturer’s instructions for installation and maintenance to ensure safety and optimal performance.
- Premium brands like Reclaim Energy offer advanced heat pump systems in Australia, known for their quality and efficiency.
- Quiet, compact, and eligible for rebates, these are fast becoming the go-to upgrade for Perth families wanting savings and sustainability without rooftop solar.
Solar Hot Water Systems ($4,000–$6,800)
- Solar water heaters use solar panels installed on the roof to warm water in a tank, with a booster for cloudy days.
- Best long-term investment for slashing power bills, especially in sunny climates like Perth.
- Requires roof space for solar panels, and installation is more complex.
- A hot water rebate is available for installing solar water heaters—these incentives can knock hundreds off the final bill.
Cheaper Alternatives
Cheap upfront doesn’t always mean cheap over time. For those on a tight budget:
- Small electric systems are the most affordable to buy and install but come with higher bills over the years.
- Instantaneous gas models slice out the tank, which saves space and limits water heating waste—great for smaller households or lower usage.
- Second-hand units and ex-display models pop up from time to time for further savings, but always check warranty and energy rating.
High-Quality Features to Look For
A hot water system should run for years with little fuss. Here’s what separates high-quality models:
- Stainless steel tanks resist corrosion, lasting longer and lowering future replacement costs. A high-quality water tank or storage tank with good insulation also helps reduce heat loss, improving energy efficiency.
- A high Coefficient of Performance (COP) in heat pumps (above 4) means more hot water for less power.
- Look for digital controls or smartphone compatibility for timer settings and self-diagnostics.
- Long warranties (10+ years on tanks, 5+ on parts) protect the investment. Always follow the manufacturer’s instructions for installation and maintenance to ensure warranty coverage.
- Installer support and trustworthy brands like Rheem, Rinnai, and iStore stand up to local conditions, plus it’s easier to access service and spares long-term.
Government Incentives for Perth Homeowners
Perth homeowners looking to upgrade to a more energy efficient hot water system can take advantage of several government incentives designed to make the switch more affordable. The Australian Government’s Small-scale Technology Certificates (STCs) scheme rewards households for installing eligible solar and heat pump hot water systems. These certificates can be traded for a financial discount at the time of purchase, reducing the upfront cost of your new hot water system.
On top of federal incentives, the Western Australian government offers additional rebates through the Energy Efficiency Grants Program. This program provides rebates of up to $1,000 for installing a heat pump hot water system, making it easier to invest in energy efficient technology that lowers both your energy bills and your carbon footprint. By choosing a pump hot water system, you’re not only saving money but also helping to create a more sustainable future for Perth.
Energy Efficiency and Savings
Switching to a heat pump hot water system is one of the smartest moves for Perth homeowners aiming to cut down on household energy use. Unlike traditional electric hot water systems, heat pump hot water systems use the surrounding air to heat water, dramatically reducing the amount of electricity needed. This means you can enjoy hot water while using less electricity, which translates to lower power bills month after month.
According to government data, pump hot water systems can slash energy bills by up to 70% compared to standard electric water heaters. By harnessing the heat from the surrounding air, these systems efficiently heat water for your home, making them a top choice for anyone looking to save energy and reduce ongoing costs. Upgrading to a heat pump hot water system is a practical way to future-proof your home, lower your energy bills, and do your part for the environment—all while enjoying reliable hot water.
Installation & Ongoing Costs
Installation costs and labour costs for hot water system installation are typically $500–$1,000, but can vary depending on the complexity of the job, such as plumbing reroutes or difficult site access. The installation cost includes both hardware costs (for the system itself) and labour. The final cost may also include removal of the old system, old hot water system, or upgrades to the existing hot water system or current hot water system. If you are switching from a gas system to an electric or heat pump system, you may need to install a new electrical circuit, which can increase installation costs. A hot water rebate may be available to help offset some of these expenses.
Keep in mind:
- Complex plumbing, rerouting pipes, or odd site access increases labour.
- Regular maintenance—like pressure valve checks and flushing tanks—prolongs lifespan.
- System servicing every 3–5 years helps many brands maintain their warranty.
Running costs add up, too. Electric and gas storage systems are easiest to fit, but electricity prices in Australia are tipped to rise another 20%+ through 2025. Heat pump and solar models, even at a higher initial spend, can pay for themselves in as little as 3–6 years—especially for families using large amounts of hot water.
System Accessories That Add Value
Enhancing your heat pump hot water system with the right accessories can boost both comfort and efficiency. Temperature controllers let you set your preferred hot water temperature, ensuring you always have water at just the right heat for your needs. Timers are another smart addition, allowing you to schedule when your hot water system operates—perfect for taking advantage of off-peak energy rates or reducing unnecessary heating.
Some advanced heat pump systems offer remote monitoring and smart sensors, giving you real-time insights into your water system’s performance and alerting you to any issues before they become costly problems. Adding insulation to your water system or upgrading to a high-quality heat exchange system can further improve efficiency, helping your pump hot water system deliver more heat with less energy. These accessories not only add convenience but also help you get the most out of your investment in a heat pump hot water system.
Safety Features to Consider
Safety should always be a top priority when installing a heat pump hot water system. Start by ensuring your hot water system is placed in a well ventilated area, away from any flammable materials, to allow for safe and efficient operation. Proper electrical connections are essential—always have a licensed professional handle the wiring to meet the manufacturer’s instructions and local safety standards.
It’s also wise to install a temperature and pressure relief valve on your pump hot water system. This important feature helps prevent scalding and reduces the risk of tank rupture by releasing excess heat and pressure. Regular maintenance, as outlined in the manufacturer’s instructions, will keep your hot water system running safely and efficiently for years to come. By prioritizing these safety features, you can enjoy reliable hot water and peace of mind.
Regulations and Compliance in Perth
When installing a heat pump hot water system in Perth, it’s important to follow all relevant regulations and compliance requirements. All hot water systems must meet the Australian Government’s minimum energy performance standards (MEPS), ensuring your new system is both energy efficient and environmentally responsible. Installation must be carried out by licensed plumbers and electricians, who will ensure your pump hot water system meets all safety standards and building codes.
Depending on your property and the type of hot water system you choose, you may also need to obtain permits or approvals from your local council before installation begins. Consulting with a qualified professional will help you navigate these requirements and ensure your hot water system is installed correctly, safely, and in full compliance with Perth’s regulations. This not only protects your investment but also guarantees your hot water system will deliver reliable performance for years to come.
Helpful Statistics & Facts
- Hot water running costs make up nearly 33% of overall energy use in the average Perth home.
- Hot water heat pump systems can save money by reducing running costs by up to 70% compared to standard electric systems.
- Solar hot water payback periods can be 6–10 years, but ongoing savings last far longer.
- A modern hot water system (fitted right for the household) can save hundreds per year and take serious pressure off rising utility bills. Government programs like the NSW Energy Savings Scheme can help reduce upfront costs and make energy-efficient upgrades more affordable.
Actionable Advice for Perth Homeowners
Pick the right size—aim for a system that fits daily household needs, or risk running out (or overspending).
Ask about all available rebates and let the installer handle paperwork—they often know the fastest route.
Check warranties and after-sales service. Installers who back their work usually provide stress-free support.
Budget for installation, not just the sticker price.
Book a once-over every few years to keep things running smoothly, and always follow the manufacturer’s instructions for servicing.
Key Takeaways
- Hot water systems in Perth usually cost between $1,600 and $4,500, with high-end options up to $7,000. When comparing options, consider the upfront costs, installation costs, and the final cost, which includes all expenses such as installation and disposal of old equipment.
- Electric systems are cheap up front but expensive to run. More efficient systems like heat pumps and solar can help you save money on running costs, though they require a larger initial spend.
- Rebates may reduce costs for eco-friendly systems by several hundred dollars.
- Stainless steel, reputable brands, and strong warranties are hallmarks of a reliable system.
- Size the system to everyday needs and factor in installation and running costs—not just the unit price.
