Hot Water Systems from $559
Choose How You Want to Order
Not every hot water job is the same. Choose supply only if you already have an installer arranged, select supply and installation together where available, or compare your options if you are still deciding what best suits your home.
Supply Only
Best if you already have a licensed plumber, gas fitter or electrician arranged.
You receive the hot water system and the components listed with that product. Installation is not included unless shown or selected separately.
Valves, old unit removal, disposal, electrical work, pipework changes, gas work, drainage and compliance upgrades may be required depending on your installation.
Supplied & Installed
Best if you want the hot water system and installation organised together.
Select your preferred system, complete the installation questions on the product page and choose any applicable installation options before checkout.
Installation availability and final requirements depend on your location, access, existing services, selected system and site conditions.
Not Sure What You Need?
The right hot water system depends on household demand, energy source and your existing installation.
Compare electric, gas, heat pump and solar hot water systems using the ranges and selection tools throughout the site.
Consider household size, available space, energy source, recovery requirements, running costs and installation requirements before choosing.
Hot Water Systems Prices, Replacement Costs & Buying Guide
Compare hot water systems online by price, type, size, energy source and installation pathway. Installed Today brings electric storage, heat pump, gas storage, instant gas and instant electric systems together so you can compare the product first, then choose supply only or an available installation option.
Supply-only ordering is available across supported major Australian metro areas. Selected products can also be supplied and installed in eligible Brisbane and Gold Coast service areas.
The product grid above remains the source for current individual product pricing. The guide below explains how advertised product prices relate to supply-only, installed and site-specific costs so customers can compare the complete purchase pathway before ordering.
How Much Do Hot Water Systems Cost?
Use the current product cards above for live individual prices. Advertised product prices are starting points; the completed amount depends on the product selected, purchase pathway and any site-specific work.
Compare Hot Water System Prices by Technology
Each system type has different product prices and installation requirements. Use these category links to compare the current products and prices, then choose the exact model and installation options on the product page.
Electric Storage
Broad capacity range for compact through family-sized storage replacements.
View Current Electric Prices →Heat Pump
Energy-efficient electric hot water with installation requirements that differ from standard storage tanks.
View Current Heat Pump Prices →Gas Hot Water
Storage and gas options for properties with a suitable natural gas or LPG supply.
View Current Gas Prices →Instant Gas
Continuous-flow systems commonly compared by flow rate, gas type and simultaneous demand.
View Current Instant Gas Prices →Instant Electric
Tankless electric hot water for suitable point-of-use and selected higher-output applications.
View Current Instant Electric Prices →What Does the Hot Water System Price Include?
The advertised starting price should be read as the starting price for the selected product or variant. It is not automatically the final installed price and is not automatically freight-inclusive unless the product or checkout specifically says so.
Supply Only Price
Best when you already have an appropriately licensed installer arranged. The price is for the product and selected product options. Installation, valves, removal, disposal, electrical work, gas work, drainage and site changes are not included unless specifically selected or stated.
Supplied & Installed
Where available, choose the product and then select the relevant installation pathway and add-ons. The ordering flow is the transaction engine: it is where the product, installation option and common extras are combined before checkout.
Site-Specific Extras
Relocation, new circuits, switchboard work, gas pipe upgrades, difficult access, bases, drainage, valves, pipework changes and current compliance requirements can change the completed cost.
How Much Does It Cost to Replace a Hot Water System?
There is no single replacement price that applies to every property. The total depends on the current product price, whether the job is like-for-like, the installation option selected and any work needed to make the new system suit the site.
Like-for-Like Replacement
Usually the simplest starting point. Matching the existing energy source, similar capacity or output and a compatible installation position can reduce the number of changes required.
Upgrade or Technology Change
Changing from electric to heat pump, gas to electric, storage to continuous flow or another technology can require different services, electrical capacity, gas work, drainage, mounting or clearances.
Relocation or New Installation
Moving the system or installing hot water where no compatible setup exists can add pipework, cabling, gas work, bases, drainage, wall mounting and additional compliance work.
Practical rule: compare the lowest suitable completed pathway, not simply the lowest product card. A slightly more expensive system that closely matches the existing setup can sometimes be a lower-complexity replacement than a cheaper unit requiring extra work.
Hot Water Installation Price Drivers by System Type
| System Type | Main Price Drivers | What Commonly Changes the Job |
|---|---|---|
| Electric Storage | Capacity, element configuration, existing circuit, valves, base and drainage | Tariff changes, switchboard work, relocation, new circuit or different connection positions |
| Heat Pump | Capacity, model, plug-in vs hardwired, base, drainage, airflow and clearances | Electrical changes, condensate, relocation, old system type and rebate/certificate requirements |
| Gas Storage | Capacity, recovery, natural gas/LPG, gas supply, base, valves and drainage | Gas pipe sizing, relocation, ventilation/clearance changes and plumbing alterations |
| Instant Gas | 16/20/26/32L class, gas type, gas supply, water pressure and mounting | Gas pipe upgrades, power supply, condensate where applicable, relocation and pipework changes |
| Instant Electric | kW output, phase, existing electrical capacity, circuit and cable run | Switchboard upgrades, new circuit, three-phase requirements and higher whole-home electrical demand |
| Solar | Tank, collector type/number, roof access, roof material and booster type | Collector removal, roof work, old solar pipework, booster changes and relocation |
Compare the Main Types of Hot Water Systems
Electric Storage
Uses electric elements to heat water stored inside a tank. Available in a broad range of capacities and commonly selected for like-for-like electric replacements.
Compare Electric Hot Water →Heat Pump
Uses electricity to transfer heat from surrounding air into stored water. Commonly considered when lower electricity use is a priority.
Compare Heat Pumps →Gas Hot Water
Includes gas storage and continuous-flow options for properties with an appropriate natural gas or LPG supply.
Compare Gas Hot Water →Instant Gas
Wall-mounted continuous-flow gas systems that heat water as required rather than storing a full hot water tank.
Compare Instant Gas →Instant Electric
Tankless electric water heating suited to selected point-of-use and other applications where the required electrical capacity is available.
Compare Instant Electric →Which Hot Water System Type Suits Your Home?
| System Type | How It Heats Water | Common Starting Point | Main Things to Check |
|---|---|---|---|
| Electric Storage | Electric element heats water stored in a tank | Replacing an existing electric storage system | Tank size, element setup, dimensions and electrical supply |
| Heat Pump | Transfers heat from surrounding air into stored water | Customers prioritising energy-efficient electric hot water | Capacity, airflow, noise, location, drainage and electrical requirements |
| Gas Storage | Gas burner heats water held inside a storage tank | Existing natural gas or LPG storage replacement | Gas type, capacity, recovery, gas supply and clearances |
| Instant Gas | Gas burner heats water as it flows through the unit | Existing continuous-flow replacement or suitable gas property | Flow rate, simultaneous demand, gas supply and water pressure |
| Instant Electric | Electric elements heat water as it passes through the heater | Point-of-use and selected tankless applications | Flow, temperature rise, kW demand and electrical capacity |
What Should You Compare Before Buying a Hot Water System?
A hot water system should be selected around the property and household rather than simply choosing the cheapest product or the largest tank.
Existing Energy Source
Check whether the current system uses electricity, natural gas, LPG or another energy source. Keeping the same energy source can simplify many replacement jobs.
Household Demand
Consider occupants, bathrooms, shower habits, baths and whether several hot water outlets are regularly used at the same time.
Storage or Continuous Flow
Storage systems keep heated water ready in a tank. Continuous-flow systems heat water as needed and are sized differently.
Installation Space
Tank dimensions, wall space, airflow, access and required clearances can determine which systems physically suit the property.
Running Cost Priorities
Customers prioritising a straightforward replacement may choose differently from those willing to pay more upfront for a more efficient technology.
Installation Requirements
Plumbing, electricity, gas, valves, drainage, bases, mounting, disposal and compliance work can all affect the completed job.
Which Size Hot Water System Do I Need?
Different hot water technologies use different sizing methods. A litres figure on a storage tank is not the same as the litres-per-minute rating on an instant gas system.
| System | Main Sizing Measure | What Influences the Choice |
|---|---|---|
| Electric Storage | Tank capacity in litres | Household demand, heating schedule, tariff and recovery |
| Heat Pump | Tank capacity + recovery performance | Household demand, climate, operating schedule and model performance |
| Gas Storage | Tank capacity + burner recovery | Peak use, household demand and recovery rate |
| Instant Gas | Continuous-flow litres per minute | Simultaneous outlets, bathrooms, temperature rise and gas supply |
| Instant Electric | Flow + electrical heating output | Temperature rise, required flow and available electrical capacity |
For electric storage, compact 50L–80L units may suit low-demand or point-of-use situations; 125L and 160L are often considered for smaller households; 250L is a common family-size comparison point; and 315L or 400L may suit higher-demand homes. Actual suitability depends on usage, recovery and the heating schedule.
Hot Water System Comparisons Before You Buy
Heat Pump vs Electric Storage
Electric storage is often simpler when replacing an existing electric tank. Heat pumps are commonly compared when lower electricity use is a priority, but they need suitable space, airflow, drainage, noise consideration and electrical setup.
Gas vs Electric Hot Water
Gas can suit homes already set up for natural gas or LPG. Electric systems can be simpler where the property already has a suitable electric hot water circuit. Changing energy source can add trade work.
250L vs 315L Electric
A 250L system can suit many moderate-use family homes, while 315L is often compared for larger households or higher peak demand. Recovery, tariff and usage matter as much as the tank label.
20L vs 26L Instant Gas
Continuous-flow systems are compared by flow capacity and simultaneous demand. A larger flow rating is not automatically better if the gas supply, water pressure or household demand does not support or require it.
Plug-In vs Hardwired Heat Pump
Some heat pumps can use a suitable 10A power point while others need hardwired electrical supply. The existing electrical setup and manufacturer requirements affect installation complexity.
Storage vs Continuous Flow
Storage systems hold heated water ready for use. Continuous-flow systems heat water as required. The better fit depends on household demand, available energy source, space, services and replacement layout.
Electric Hot Water Systems
Electric storage remains one of the most common replacement pathways for Australian homes. Water is heated by one or more electric elements and stored in an insulated tank ready for use.
Key price and suitability factors include capacity, element configuration, cylinder construction, dimensions, existing circuit, tariff, valves, base, drainage and whether the new tank connects cleanly to the existing setup.
Heat Pump Hot Water Systems
Heat pumps use electricity to operate a refrigeration cycle that transfers heat from surrounding air into stored water. They are commonly compared by tank capacity, brand, noise, controls, 10A plug-in or hardwired requirements and installation position.
They can reduce the electricity required for hot water compared with conventional electric resistance heating, but the installation location becomes more important because airflow, noise, condensate drainage and manufacturer clearances need to be considered.
Gas Hot Water Systems
Gas hot water can suit homes that already have an appropriate natural gas or LPG supply. Systems are available in storage and continuous-flow formats.
Gas storage is usually assessed by capacity and recovery, while instant gas is sized by flow rate and peak simultaneous demand. The correct natural gas or LPG version must be selected for the property, and gas supply capacity can affect replacement cost.
Instant Gas Hot Water Systems
Instant gas systems heat water as it flows through the unit and are generally compact wall-mounted appliances. Common residential comparisons include 16L, 20L and 26L classes.
They should be selected around the number of outlets likely to operate together, required temperature rise, gas type, available gas supply, water pressure, electrical requirements where applicable and installation location.
Instant Electric Hot Water Systems
Instant electric systems heat water directly as it passes through the appliance. They can suit point-of-use applications and selected tankless installations where adequate electrical capacity is available.
Suitability depends heavily on required flow, temperature rise, kW output, single-phase or three-phase requirements, switchboard capacity and whether a new circuit or cable run is required.
Like-for-Like Hot Water System Replacement
If the existing hot water system has reliably met the household's needs, a similar replacement is often the simplest starting point. That generally means comparing the same energy source, similar capacity or output and a compatible installation style.
Before ordering, check:
- Existing system type and energy source
- Tank size or flow rate
- Household demand
- Physical dimensions
- Indoor or outdoor location
- Access for removal and replacement
- Water connection positions
- Electrical requirements
- Natural gas or LPG requirements
- Drainage, valves and bases
- Current compliance requirements
- Whether the existing services can be reused
Changing technology can provide benefits, but it can also increase the amount of plumbing, gas, electrical or site work required compared with a straightforward like-for-like replacement. If the product page offers a photo-check pathway and you are unsure whether the setup is standard, use it before committing to a complex option.
Are Hot Water Rebates Available?
Eligible heat pump and solar hot water systems may qualify for incentives, but eligibility depends on the product, installation pathway, location, scheme rules and the date the work is completed. State programs can differ and can change over time.
Supply only does not automatically create rebate eligibility. Some incentives require installation by an approved or appropriately accredited provider, certificate creation or assignment, decommissioning of an eligible old system and other scheme-specific conditions.
Use the current rebate information provided during the relevant product or installation pathway rather than assuming every product-only purchase receives the same incentive.
Upfront Price vs Long-Term Hot Water Cost
The cheapest product on the day is not automatically the cheapest hot water solution over time. Compare the product price with installation complexity, expected energy use, maintenance, consumables, servicing, warranty and the likelihood of extra trade work.
Upfront Product
Current purchase price, capacity, brand, features and included components.
Installation
Like-for-like work, upgrades, relocation, access and compliance requirements.
Running Cost
Energy source, efficiency, tariff or operating schedule and household demand.
Ownership
Warranty, servicing, anodes or consumables where applicable and long-term support.
Hot Water Systems Brisbane
Brisbane is a primary installation market for Installed Today. Selected hot water systems are available with installation in eligible Brisbane, Logan, Ipswich, Moreton Bay and Redlands service areas, subject to the product, postcode and installation requirements.
Brisbane customers can compare electric storage, heat pump, gas, instant gas and selected instant electric options. Like-for-like replacement is generally the simplest pathway, while changing fuel type, system technology or installation location may require additional trade work.
Hot Water Systems Gold Coast
Selected hot water systems are available supplied and installed across eligible Gold Coast service areas. Customers can compare standard electric replacements, heat pumps, gas systems and continuous-flow options according to household demand, existing energy source and site conditions.
Installation availability depends on the selected product, postcode, access, existing services and any plumbing, electrical, gas or compliance work required.
Buy Hot Water Systems Across Major Australian Metro Areas
Supply-only hot water systems are available for customers arranging their own appropriately licensed trades across supported mainland Australian markets.
Main markets include Brisbane, Gold Coast, Sunshine Coast, Sydney, Melbourne, Perth and Adelaide, together with major centres including Townsville, Cairns, Toowoomba, Newcastle, Central Coast, Wollongong and Geelong, where the selected product and delivery pathway are available.
Brisbane and Gold Coast remain the primary Installed Today installation markets. Customers elsewhere can use supply-only ordering where delivery is available and arrange their own appropriately licensed installer.
Compare Hot Water Brands by System, Not Just Name
The Installed Today range includes established brands across electric, gas, heat pump and continuous-flow categories, including names such as Rheem, Rinnai, Dux, Vulcan, Aquamax, Bosch, Stiebel Eltron, iStore and other specialist hot water manufacturers.
Brand is only one part of choosing a system. Compare the individual model's capacity or output, dimensions, warranty, energy source, cylinder material where relevant, installation requirements and suitability for the existing property.
Choose How You Want to Order
Supply Only
Best if you already have appropriately licensed plumbing, electrical or gas trades arranged or you are outside an Installed Today installation area.
The product price is for the selected system and product options. Installation and site work are not included unless specifically shown.
Brisbane Installation
Selected systems are available with installation in eligible Brisbane metro service areas.
Choose the product, answer the installation questions and select the applicable installation options before checkout.
Gold Coast Installation
Selected systems are also available supplied and installed in eligible Gold Coast areas.
Availability depends on product, postcode, site access, existing services and the work required.
Hot Water System Price, Replacement & Installation FAQs
How much does a hot water system cost?
Current product prices are shown in the product grid above. The current advertised starting-price range is available from the current products above. The final amount depends on the product selected, supply-only or installed pathway and any site-specific work.
Is the displayed hot water price supply only?
The displayed product or "from" price is generally the starting product price unless the specific product or option states that installation is included. Check the selected product and installation choices before checkout.
How much is hot water system installation?
Installation depends on the system type and site. Like-for-like replacement is usually less complex than relocation or changing technology. Electrical, gas, valves, drainage, bases, access, pipework and compliance requirements can all change the installed cost.
How much does it cost to replace a 250L electric hot water system?
The product price depends on the brand and model, while the completed replacement cost depends on whether the existing circuit, valves, base, drainage and connection positions can be reused. Compare 250L products above, then choose the applicable installation pathway on the product page.
What is the cheapest hot water system replacement?
The lowest advertised product is not automatically the lowest completed replacement. A compatible like-for-like system can reduce additional work, while a cheaper unit that needs a new circuit, relocation or major plumbing changes can cost more overall.
Can I buy a hot water system supply only?
Yes. Supply only suits customers who already have an appropriately licensed installer, want to organise their own trade or are outside an Installed Today installation area. Delivery availability depends on the product and destination.
Can Installed Today organise installation?
Selected systems are available with installation in eligible Brisbane and Gold Coast service areas. Availability depends on the product, postcode, access, existing services and site requirements.
Is delivery included in the advertised price?
Do not assume delivery is included unless the product, promotion or checkout specifically states it. Freight and delivery availability can vary by product and destination.
Are hot water rebates available?
Eligible heat pump and solar systems may qualify for incentives. Eligibility depends on the product, location, current scheme rules and installation pathway. Supply-only purchase by itself does not guarantee rebate eligibility.
What should I check before buying a hot water system online?
Check energy source, size, dimensions, installation position, household demand, access, connection positions, electrical or gas requirements, drainage, valves and whether any compliance upgrades may be needed.
Does installation include removal and disposal of the old system?
Removal and disposal are not automatically included unless they are shown in the selected installation option or chosen as an add-on. Review the product installation choices before checkout.
What is the difference between LPG and natural gas hot water systems?
LPG and natural gas are different fuel types. Select the correct product for the property's gas supply and have any gas work completed by an appropriately licensed person.
Choose the Product First, Then Select Your Purchase Path
Compare the current range above to see live product prices, brands, sizes and available variants. Choose supply only if your installer is already arranged, or select an installation option where available in Brisbane and Gold Coast.
Compare Hot Water Systems Above ↑Hot Water System FAQs
Common questions about choosing, ordering and installing a hot water system through Installed Today.
Can I buy a hot water system supply only?
Yes. Choose supply only if you already have a licensed plumber, gas fitter or electrician arranged. Supply-only pricing is for the hot water system only and does not include installation, valves, old unit removal, disposal, electrical work, pipework changes or compliance upgrades unless selected separately.
Can I order a hot water system supplied and installed?
Yes. Supplied and installed options are available for selected products and eligible Brisbane and Gold Coast service areas. Installation availability depends on your location, access, product type, existing setup and site requirements.
What size hot water system do I need?
The right size depends on household size, shower habits, available space, energy source and how much hot water your home uses each day. Smaller households may suit compact storage systems, while larger homes often compare 250L, 315L or continuous flow options.
What is the difference between LPG and natural gas hot water systems?
LPG and natural gas systems are not the same. You need to choose the correct gas type for your property, as a natural gas model should not be used on LPG unless the product is specifically designed or converted for that use by a qualified person.
Are external gas hot water units suitable for indoor installation?
External gas hot water units are designed for outdoor installation only. They should not be installed indoors unless the manufacturer specifically states the model is suitable for internal or flued installation.
Does installation include old system removal and disposal?
Old system removal and disposal are not automatically included unless shown in the selected installation option or chosen as an add-on. Some jobs may also require valves, pipework changes, electrical work or compliance upgrades.
Do you install hot water systems in Brisbane and the Gold Coast?
Installed Today offers supplied and installed options in eligible Brisbane and Gold Coast service areas. Availability depends on the selected product, your address, site access and the installation requirements for your home.
What brands of hot water systems can I choose from?
Installed Today offers a range of trusted hot water brands, including electric, gas, continuous flow, solar and heat pump options. Available brands and models may vary depending on stock, product type and installation suitability.