Hot Water Systems
Shop hot water systems online with Installed Today for supply-only ordering across major Australian metro areas, with supplied and installed options available on selected products in eligible Brisbane and Gold Coast service areas.
This collection is built for homeowners, landlords, property managers, builders, renovators and trade customers who want a simpler way to compare reliable hot water systems online. Whether you are replacing a failed unit, upgrading an older system, choosing a more efficient option, or organising a hot water system for a new home or renovation, Installed Today makes it easier to compare electric, gas, instant gas, instant electric, heat pump and solar hot water systems in one place.
Choose supply only if you already have your own licensed installer arranged. Choose supplied and installed where available if you want the product and installation organised together in an eligible Brisbane or Gold Coast service area.
Supply Only Hot Water Systems Across Australian Metro Areas
Supply only is ideal if you already have a licensed plumber, gas fitter or electrician ready to install your new hot water system. This option suits homeowners managing their own trade, builders ordering for a project, property managers coordinating with preferred contractors, and trade customers who only need the unit supplied.
The product price is for the hot water system only. Installation, valves, old unit removal, disposal, electrical work, gas work, pipework changes, tempering valves, drainage work, access upgrades and compliance upgrades are not included unless selected separately.
Before ordering supply only, check that the system suits the property, the existing energy source, the available space, the household demand and the installation requirements. This is especially important when changing from electric to gas, gas to heat pump, storage to continuous flow, or when replacing an older unit with different dimensions or connection positions.
Supplied and Installed Hot Water Systems in Brisbane and Gold Coast
Supplied and installed options are available on selected hot water systems in eligible Brisbane and Gold Coast service areas. This option is designed for customers who want the product and installation organised together instead of buying the system separately.
Supplied and installed can be useful when your existing hot water system has failed, when the property needs a practical replacement quickly, or when you want a clearer online ordering process before booking the job.
Availability depends on your address, existing system, product type, access, plumbing setup, electrical or gas requirements, and current compliance needs. Some jobs may need additional valves, disposal, electrical work, gas work, pipework changes or compliance upgrades depending on the site.
What Type of Hot Water System Should You Choose?
The best hot water system depends on how many people live in the home, how much hot water is used each day, what energy source is available, where the unit can be installed, and whether you want the lowest upfront cost, a simple replacement, strong recovery, better efficiency, or a system that suits a specific site layout.
Electric storage hot water systems are one of the most common replacement choices for Australian homes. They store heated water in a tank and are available in a wide range of sizes, from compact units through to larger family-sized systems. They are often chosen when the home already has an electric storage unit and the customer wants a practical like-for-like replacement.
Gas hot water systems are available in storage and continuous flow options. Gas storage systems hold heated water in a cylinder, while instant gas systems heat water as it flows through the unit. Gas systems may suit homes with natural gas or LPG already available, but the correct model must be selected for the property’s gas type.
Instant gas hot water systems are popular for homes wanting a wall-mounted system that heats water on demand. They can be a strong option where space is limited or where the property already has a suitable gas setup. Flow rate, number of bathrooms, gas supply, water pressure and installation location all matter when comparing instant gas models.
Instant electric hot water systems are usually selected for smaller point-of-use applications, compact spaces or specific fixtures rather than high-demand whole-home use. They can be useful in some apartments, granny flats, offices, kitchens, laundries or low-use spaces where a storage tank is not suitable.
Heat pump hot water systems are often considered by customers wanting a more energy-efficient electric hot water option. They use ambient air and electricity to heat water, which can reduce energy use compared with a standard electric storage system. They need suitable outdoor space, airflow and installation conditions, so they are not always a simple like-for-like replacement for every property.
Solar hot water systems can suit homes with suitable roof space, solar access and the right installation conditions. They are more site-dependent than standard electric or gas systems and may require more planning around collectors, tanks, boosting and roof access.
Hot Water System Size Guide
Choosing the right size is one of the most important parts of buying a hot water system. A system that is too small may run out during peak use, while a system that is too large may cost more upfront and take up more space than needed.
Small electric systems such as 50L to 80L units can suit low-demand spaces, single users, small units, kitchens, laundries or specific point-of-use applications.
125L and 160L systems are commonly considered for smaller homes, couples, townhouses, apartments and lower-use households.
250L systems are a popular electric storage size for many family homes and rental properties where moderate daily hot water use is expected.
315L systems are often chosen for larger families, higher-use homes, multiple bathrooms or properties where a bigger stored volume is preferred.
400L systems may suit larger households, high-demand properties or homes where stored hot water demand is consistently above average.
For gas continuous flow systems, sizing is usually compared by flow rate rather than tank capacity. The right model depends on the number of bathrooms, number of outlets likely to run at once, climate, gas type and household expectations.
Electric vs Gas vs Heat Pump Hot Water
Electric hot water systems are often the simplest replacement where an electric unit is already installed. They are available in many sizes, are familiar to most homeowners, and can suit both supply-only customers and selected supplied and installed jobs.
Gas hot water systems can suit homes that already have natural gas or LPG. They can provide strong hot water performance, but the correct gas type, installation location, ventilation, pipe sizing and compliance requirements must be checked before ordering.
Heat pump hot water systems are usually chosen by customers looking beyond the lowest upfront cost. They may suit homes wanting improved energy efficiency, but they need suitable installation space, airflow, drainage, noise consideration and the right site conditions.
There is no single best hot water system for every home. A small apartment, a family home, a rental property, an acreage home, a renovation and a commercial site can all need different solutions.
Replacing an Existing Hot Water System
If your current system has worked well, replacing like-for-like can often be the most straightforward option. This may mean choosing the same energy type, similar size, similar installation position and similar product style.
However, replacement is also a good time to compare whether your current system is still the best fit. A growing family may need more capacity. A smaller household may not need the same tank size. A home with high electricity use may consider a heat pump. A property with gas available may compare continuous flow options. A rental property may prioritise practical replacement, trusted brands and simple maintenance.
Before ordering, check the existing unit size, energy source, indoor or outdoor position, model type, available space, access path, valve condition, drainage, electrical supply, gas connection and whether any compliance upgrades may be required.
Hot Water Brands Available
Installed Today stocks a range of trusted hot water brands across electric, gas, heat pump, solar and continuous flow categories. Depending on product availability, this may include brands such as Rheem, Rinnai, Dux, Vulcan, Bosch, Aquamax, Stiebel Eltron, iStore, Enviroheat and Emerald Energy.
When comparing brands, consider more than the name on the front of the unit. Look at the system type, tank size, cylinder material, warranty, dimensions, connection positions, energy source, household suitability and whether the model is a practical replacement for your existing setup.
Some customers want a budget-friendly replacement. Others want a premium model, stainless steel cylinder, higher efficiency option, known brand, compact design, or a system that closely matches the old unit. The best choice depends on the property and the reason for replacement.
Hot Water System Buying Guide
What hot water system is best when replacing an old electric tank?
If your home already has an electric storage hot water system, another electric storage unit may be the simplest replacement path. The key is to compare the current tank size, element setup, dimensions, connection points and household demand.
Some customers stay with the same capacity because the existing system has handled the home’s hot water demand well. Others move up or down depending on family size, shower habits, tariff setup, available space and whether the old system regularly ran out of hot water.
A like-for-like electric replacement can be practical, but it should still be checked against current compliance requirements, valve condition, access and installation space.
Should I upgrade from electric storage to heat pump hot water?
A heat pump can be worth considering if you want a more energy-efficient electric hot water option and your property has suitable outdoor space. Heat pumps work differently from standard electric tanks, so they need good airflow, drainage, suitable location and enough space around the unit.
They may not be the right choice for every home, especially where space is tight, access is difficult, noise location matters, or the customer simply wants the lowest upfront replacement cost.
For some homes, heat pump hot water can be a strong upgrade. For others, a standard electric storage system may remain the simpler and more practical replacement.
Is instant gas better than a storage hot water system?
Instant gas and storage hot water systems suit different homes. Instant gas systems heat water as needed and are usually wall-mounted, which can save ground space. They can suit homes with suitable gas supply and strong demand for continuous hot water.
Storage systems hold hot water in a tank and can be simpler when replacing an existing storage unit. They are often chosen where the home is already set up for storage hot water and the customer wants a familiar replacement.
The better option depends on gas availability, number of bathrooms, usage patterns, installation location, upfront budget and whether the home already has compatible services.
What should I check before buying a hot water system online?
Before buying a hot water system online, check the energy source, system size, physical dimensions, installation location, household demand, access path, connection positions and whether your property needs any extra valves, electrical work, gas work, drainage, pipework changes or compliance upgrades.
For supply only, your licensed installer should confirm suitability before installation. For supplied and installed options in Brisbane and Gold Coast, the product page questions help identify common installation requirements before checkout.
Why do some homes need a larger hot water system?
Some homes need a larger hot water system because they use more hot water during peak periods. This can happen in larger families, homes with multiple bathrooms, properties with long showers, households using baths, or homes where laundry and shower use happen around the same time.
A larger tank can provide more stored hot water, but it is not always automatically better. Space, recovery rate, tariff setup, installation cost and household usage should all be considered.
For example, a 315L or 400L electric system may suit a larger home, while a 125L, 160L or 250L system may be more practical for smaller households.
Can I change from gas hot water to electric hot water?
Changing from gas to electric may be possible, but it is not always a simple product swap. The property may need electrical work, plumbing changes, disconnection or capping of gas services, a suitable installation location and compliance checks.
The same applies when changing from electric to gas, electric to heat pump, or storage to continuous flow. Any change in system type should be planned carefully so the new system suits the site.
If you are changing energy type, make sure the total job cost, trade requirements and site conditions are considered before ordering.
What hot water system is best for a rental property?
For rental properties, the best hot water system is usually practical, reliable and suitable for the number of occupants. Many landlords choose like-for-like replacements because they can reduce complexity when the existing system type has worked well.
Electric storage hot water systems are common in rentals because they are familiar and available in many sizes. Gas and heat pump systems may also suit some properties depending on the existing setup, energy source and installation location.
The right choice should balance upfront cost, tenant demand, property layout, compliance requirements and long-term maintenance.
Is it better to replace a hot water system before it fails?
Replacing a hot water system before complete failure can help avoid emergency downtime, especially in family homes, rentals and properties where hot water is essential every day. Warning signs may include inconsistent hot water, rusty water, leaks, unusual noises, slow recovery or an ageing unit near the end of its service life.
Some customers wait until the system fails. Others replace early when renovating, changing household needs, upgrading efficiency, or preparing a rental property for new tenants.
Planning ahead can give you more time to compare system types, sizes and installation options instead of rushing into the first available replacement.
Why Buy Hot Water Systems from Installed Today?
Installed Today makes it easier to compare hot water systems online by bringing electric, gas, instant gas, instant electric, heat pump and solar options into one place.
You can compare product types, brands, sizes, prices and installation options without visiting a showroom or waiting for multiple quotes just to understand your choices.
Customers choose Installed Today for supply-only ordering across major Australian metro areas and supplied and installed options on selected products in eligible Brisbane and Gold Coast service areas.
Whether you need a simple replacement, a larger family-sized tank, a gas continuous flow upgrade, a heat pump system, or a supply-only product for your own installer, this collection helps you choose a hot water system that suits the property, budget and household demand.
